{"title":"Data Center Chilled Water \u0026 Cooling Loop Consumables","description":"\n\u003cstyle\u003e\n\/* Industrial Verticals lane — full-width body override (data center silo) *\/\n.iv-lane-wide { max-width: none !important; }\n.iv-lane-wide .reading-width,\n.iv-lane-wide.reading-width,\n.iv-lane-wide .rte,\n.iv-lane-wide.rte { max-width: none !important; }\n.template-page .page__content.reading-width,\n.template-page .reading-width.rte,\n.template-collection .rte.collection-desc,\n.template-collection .richtext-content {\n  max-width: 1280px !important;\n  margin-left: auto !important;\n  margin-right: auto !important;\n  padding-left: 1rem;\n  padding-right: 1rem;\n}\n@media (min-width: 1280px) {\n  .template-page .page__content.reading-width,\n  .template-page .reading-width.rte,\n  .template-collection .rte.collection-desc,\n  .template-collection .richtext-content {\n    max-width: 1440px !important;\n  }\n}\n.iv-lane-wide h2 { margin-top: 2rem; }\n.iv-lane-wide table { width: 100%; border-collapse: collapse; margin: 1rem 0; }\n.iv-lane-wide table th, .iv-lane-wide table td { border: 1px solid #d1d5db; padding: 0.5rem 0.75rem; }\n.iv-lane-wide table th { background: #f3f4f6; text-align: left; }\n\u003c\/style\u003e\n\u003cdiv class=\"iv-lane-wide\"\u003e\n\u003c!-- WeldingMart Collection Draft — \/collections\/data-center-chilled-water-cooling-loop --\u003e\n\u003c!-- H1: Data Center Chilled Water \u0026 Cooling Loop Welding --\u003e\n\u003c!-- Target KW cluster: chilled water \/ condenser water \/ glycol loop --\u003e\n\u003c!-- custom.intent: commercial | Draft date: 2026-06-17 | Author: SEO Silo-chat --\u003e\n\u003c!-- NOTE: Per SOP §31.1 — FAQ content is delivered via custom.faq metafield (JSON), NOT inline in descriptionHtml. --\u003e\n\n\u003cp\u003eHyperscale data centers are no longer air-cooled facilities. The AI compute revolution — GPU clusters running at 50 kW to 200 kW per rack, versus the 5–8 kW per rack that defined data center design just five years ago — has made liquid cooling mandatory at scale. Direct liquid cooling (DLC) systems, rear-door heat exchangers (RDHx), cooling distribution units (CDUs), and immersion cooling tanks are now standard infrastructure components in every hyperscale data center build. Each of these systems requires welded stainless process piping that meets ASME B31.3 requirements, ASME BPE cleanliness standards (for high-purity applications), and the mechanical integrity required by a system operating at 100–300 psi and circulating tens of thousands of gallons per minute across a campus.\u003c\/p\u003e\n\n\u003cp\u003eWeldingMart stocks the stainless TIG filler rod and MIG wire for all chilled water, condenser water, and glycol loop welding applications — ER308L, ER316L, ER309L — with same-day shipping and commercial account support for project BOM purchasing. 877-532-WELD. Hub page with BOM upload: \u003ca href=\"\/pages\/data-center-construction-welding-supplies\"\u003eWelding Supplies for Data Center Construction →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eLiquid Cooling vs. Air Cooling — The Driver Behind Hyperscale Piping Demand\u003c\/h2\u003e\n\n\u003cp\u003eTraditional air-cooled data centers circulate chilled air through raised-floor plenums or overhead CRAC\/CRAH distribution. The fundamental limitation of air cooling is the thermal conductivity of air — approximately 0.025 W\/m·K versus water's 0.6 W\/m·K. As GPU compute density has increased by roughly 10× over five years (from NVIDIA A100 at 400W TDP to H100 at 700W TDP to H200 and B200 at 1,000W+ TDP), air cooling has become physically unable to extract the heat generated by modern AI training clusters.\u003c\/p\u003e\n\n\u003cp\u003eLiquid cooling closes this thermal gap. Water and glycol-water solutions can carry approximately 3,500× more heat per unit volume than air. Direct liquid cooling systems circulate chilled water or dielectric fluid directly to the GPU cold plate, extracting heat at the source before it enters the room air. This shift from room-level cooling to rack-level cooling is the engineering driver behind the explosion in process piping scope on hyperscale data center construction projects.\u003c\/p\u003e\n\n\u003cp\u003eWhat this means for mechanical contractors: liquid-cooled data centers require significantly more small-bore stainless process piping per square foot of white space than traditional air-cooled builds. A 100 MW AI compute campus may require 50,000 to 200,000+ linear feet of 1\/2\" to 4\" stainless process piping — all welded, all pressure-tested, all documented under ASME B31.3. The consumable volume per project is unlike anything in prior data center construction cycles. At the system level, every cool water loop — from the cool water supply leaving the chiller, to the cool water distribution headers, to the cool water connections at each CDU, to the cool water return back to the chiller — must be welded, tested, and commissioned before the data center can operate. The total cool water piping system on a 100 MW campus may represent 6 to 18 months of active welding work. A fast build pace requires a weld team capable of executing 30 to 100 weld joints per day continuously across the project duration — and a supply chain built to keep weld consumables on site throughout that time. WeldingMart can build a replenishment program timed to your project schedule, ensuring that cool water piping work never stops for lack of TIG rod or purge gas.\u003c\/p\u003e\n\n\u003ch2\u003eChilled Water vs. Condenser Water vs. Glycol Loop — Material and Consumable Differences\u003c\/h2\u003e\n\n\u003cp\u003eThree distinct fluid systems run through a liquid-cooled data center cooling plant, each with different material specifications and welding consumable requirements:\u003c\/p\u003e\n\n\u003ch3\u003eChilled Water — Primary and Secondary Loops\u003c\/h3\u003e\n\n\u003cp\u003eThe chilled water system carries 38–44°F supply water from the chiller plant to air handlers and direct liquid cooling distribution systems. Primary loops connect chillers to primary pumps; secondary loops serve individual server halls or cooling distribution units (CDUs). Piping is typically 304L or 316L stainless in 2\" to 12\" sizes for secondary distribution, with carbon steel used for large (8\"+) primary headers where cost drives the material selection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConsumables for 304L chilled water piping:\u003c\/strong\u003e ER308L TIG rod and MIG wire. Back-purge with 99.995% argon on all root passes. Interpass temperature ≤350°F. C of C required on all filler documentation packages. See full catalog: \u003ca href=\"\/collections\/tig-rod-welding-rods\"\u003eTIG Welding Rods \u0026amp; Filler Rod →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConsumables for 316L chilled water piping:\u003c\/strong\u003e ER316L TIG rod and MIG wire. Same back-purge and interpass temperature requirements as 304L. ER316L preferred where the facility specification calls for molybdenum-alloyed filler or where chloride exposure is a design consideration. See also: \u003ca href=\"\/collections\/data-center-process-piping-consumables\"\u003eData Center Process Piping Consumables →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eCondenser Water — Cooling Tower Loops\u003c\/h3\u003e\n\n\u003cp\u003eThe condenser water system circulates 85–95°F water between the chiller condenser and cooling towers. This open-loop system is exposed to atmospheric oxygen, biological growth, and chemical treatment compounds — making corrosion resistance a significant design criterion. Condenser water piping is commonly carbon steel (A53\/A106 Grade B, galvanized or coated) for large main headers, transitioning to stainless for connections to sensitive equipment, cooling tower nozzles, and any location where the facility specification requires stainless.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStainless-to-carbon transitions in condenser water:\u003c\/strong\u003e ER309L is required for dissimilar-metal joints where stainless cooling tower nozzles or stainless equipment connections attach to carbon steel condenser water headers. ER309L's higher chrome\/nickel content (23–25% Cr, 12–14% Ni) provides a dilution-resistant buffer at the transition joint.\u003c\/p\u003e\n\n\u003ch3\u003eGlycol Loops — Precision Cooling and Direct Chip Cooling\u003c\/h3\u003e\n\n\u003cp\u003ePropylene glycol or ethylene glycol solutions (typically 30–40% concentration) are used in data center cooling applications where freeze protection is required, including: outdoor piping in northern climates (Wisconsin winters), precision air handling unit coils, and the secondary coolant in direct chip cooling systems that use facility chilled water as the primary source. Glycol system piping is almost universally 316L stainless in the high-purity DLC and CDU application, with 304L or 316L for traditional precision air handler glycol coil piping.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConsumables for glycol loop welding:\u003c\/strong\u003e ER316L for 316L base metal glycol systems. ER308L for 304L glycol distribution piping. Note: glycol concentration does not change the filler selection — the base metal specification drives consumable selection. For high-purity DLC glycol loops where ferrite content must be documented, request low-ferrite ER316L heats (FN ≤5) from our technical team.\u003c\/p\u003e\n\n\n\u003ch2\u003eChilled Water System Pipe Specifications and Installation Requirements\u003c\/h2\u003e\n\n\u003cp\u003eA chilled water system in a hyperscale data center is a designed collection of pipe, pumps, valves, heat exchangers, chillers, and control systems — all connected by welded pipe and supported by structural steel hangers and supports. Understanding how a chilled water system works from a fabrication standpoint helps welders, piping fabricators, and industrial contractors build better-quality systems and install them faster. Here is how the chilled water system pipe specification flows through a typical data center project:\u003c\/p\u003e\n\n\u003ch3\u003ePrimary Chilled Water System — Pipe from Chiller to Plant\u003c\/h3\u003e\n\n\u003cp\u003eThe primary chilled water system connects chillers to primary distribution headers. Primary loop pipe is designed for the highest flow rates in the system — typically 2,000 to 20,000 GPM on a large industrial data center campus — and is usually specified as 8\" to 24\" carbon steel (A106 Grade B) or stainless. Welds on primary loop pipe are ASME B31.3 full-penetration butt welds. A good welder on primary pipe installation works at 4 to 8 inch pipe per shift, making completed, pressure-tested, installed joints. Lead time from weld to pressure test is typically 24 to 48 hours — work performed today is good for pressure test tomorrow.\u003c\/p\u003e\n\n\u003cp\u003ePrimary loop pipe installation requires:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFit-up to drawing tolerances — pipe misalignment on large-bore joints must be corrected before root pass to avoid weld defects\u003c\/li\u003e\n  \u003cli\u003eBack-purge on stainless root passes (argon, 99.995% pure, oxygen ≤50 ppm at root)\u003c\/li\u003e\n  \u003cli\u003ePreheat on carbon steel pipe per ASME B31.3 Table 330.1.1 when pipe wall exceeds 1\"\u003c\/li\u003e\n  \u003cli\u003ePressure test (hydrotest at 1.5× design pressure) before insulation installed over welds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSecondary Chilled Water System — Pipe to CDUs and Air Handlers\u003c\/h3\u003e\n\n\u003cp\u003eThe secondary chilled water system distributes cooled water from primary heat exchangers or directly from chillers to individual cooling distribution units (CDUs), air handling units (AHUs), and precision cooling systems throughout the data center. Secondary chilled water system pipe is typically 2\" to 8\" 304L or 316L stainless. Welders on secondary systems work at higher joint rates than primary pipe — 1\" to 3\" pipe joints are completed in 15 to 30 minutes each by a good industrial TIG welder, meaning 15 to 25 installed, pressure-tested joints per shift is a reasonable production rate.\u003c\/p\u003e\n\n\u003cp\u003eThe secondary chilled water system requires precision piping designed to exact spool drawings — every pipe run, every tee, every valve body connection is designed in advance. Valves and pumps connect to this system via welded flanged connections or socket-weld fittings; all valve and pump connection welds must pass visual inspection before the valve or pump is installed. For secondary chilled water system pipe from 1\/2\" to 4\" OD, orbital welding works well — the systems are designed with enough repetition in pipe OD and wall thickness that orbital programs pay off. See: \u003ca href=\"\/collections\/data-center-orbital-welding\"\u003eData Center Orbital Welding →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eChilled Water System Valves, Pumps, and Flow Control\u003c\/h3\u003e\n\n\u003cp\u003eIndustrial valves (butterfly valves, gate valves, ball valves, balancing valves) and pumps (centrifugal chilled water pumps, primary secondary flow separation devices) are connected to the chilled water pipe system via welded flanges or weld-neck flanges. Every weld on a valve or pump connection is installed under the same ASME B31.3 requirements as the pipe itself. Welds at valves and pumps must be accessible for inspection and pressure test, installed correctly on first pass, and designed to allow removal of the valve or pump for maintenance without cutting pipe.\u003c\/p\u003e\n\n\u003cp\u003eFlow measurement in chilled water systems (ultrasonic flow meters, orifice plates, vortex flow meters) is installed in straight runs of pipe — typically 10× pipe diameters upstream and 5× downstream. These pipe runs are designed to exact dimensions to ensure accurate flow measurement. Welding a flow meter spool requires precision pipe fit-up to specified face-to-face dimensions, with the weld joint within ±1\/8\" of the designed centerline elevation. Good industrial welders work to these tolerances naturally; less experienced welders need fit-up tooling and alignment fixtures.\u003c\/p\u003e\n\n\u003ch2\u003ePrefab Piping Skids and Modular Cooling Distribution Units (CDUs)\u003c\/h2\u003e\n\n\u003cp\u003eThe data center industry's shift to modular construction has fundamentally changed how cooling piping is fabricated and installed. Prefabricated piping skids — assembled and welded in a controlled shop environment before delivery to the job site — are now standard on hyperscale campuses. A single chilled water distribution skid may contain 50 to 200 weld joints, all welded to ASME B31.3 with full documentation, before the skid leaves the fabrication shop.\u003c\/p\u003e\n\n\u003cp\u003eShop-fabricated piping environments offer advantages that job-site field welding cannot match: controlled temperature and humidity, flat-position welding (1G) on most joints, continuous argon back-purge fixtures, and immediate weld visual and dimensional inspection before joints are closed. Orbital tube welding is particularly cost-effective in prefab environments — the investment in weld program development and qualification is amortized across hundreds or thousands of joints on a production spool-out.\u003c\/p\u003e\n\n\u003cp\u003eWeldingMart serves both field mechanical contractors and prefab shop fabricators. For prefab spool shop accounts with regular high-volume TIG rod consumption, contact our commercial team at dkossel@weldingmart.com for volume pricing and stocking arrangements.\u003c\/p\u003e\n\n\u003cp\u003eFor orbital welding head and consumable needs on CDU and prefab skid applications, see: \u003ca href=\"\/collections\/data-center-orbital-welding\"\u003eData Center Orbital Welding →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eER308L vs. ER316L — Decision Guide for Chilled Water Loop Applications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eFactor\u003c\/th\u003e\n      \u003cth\u003eUse ER308L\u003c\/th\u003e\n      \u003cth\u003eUse ER316L\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBase metal specification\u003c\/td\u003e\n      \u003ctd\u003e304 or 304L stainless\u003c\/td\u003e\n      \u003ctd\u003e316 or 316L stainless\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProcess fluid\u003c\/td\u003e\n      \u003ctd\u003eClean chilled water, low-chloride glycol\u003c\/td\u003e\n      \u003ctd\u003eCondenser water, high-chloride glycol, high-purity DLC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eChloride exposure\u003c\/td\u003e\n      \u003ctd\u003eLow — clean water with no deicing chemical exposure\u003c\/td\u003e\n      \u003ctd\u003eAny — outdoor piping, cooling towers, chlorinated process water\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eASME Section IX P-Number\u003c\/td\u003e\n      \u003ctd\u003eP-8 Group 1 (304\/304L)\u003c\/td\u003e\n      \u003ctd\u003eP-8 Group 1 (316\/316L)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFacility specification\u003c\/td\u003e\n      \u003ctd\u003eSpec calls for 304L consumable or AWS ER308L\u003c\/td\u003e\n      \u003ctd\u003eSpec calls for 316L consumable, Mo-alloyed filler, or AWS ER316L\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFerrite documentation required?\u003c\/td\u003e\n      \u003ctd\u003eNo — standard B31.3 welding\u003c\/td\u003e\n      \u003ctd\u003eYes — ASME BPE or hyperscaler facility standard requiring FN documentation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCost difference\u003c\/td\u003e\n      \u003ctd\u003eLower (standard 308L pricing)\u003c\/td\u003e\n      \u003ctd\u003e~10-15% higher per lb due to Mo content — conservative default for most chilled water specs\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch2\u003eChilled Water Riser Welding and District Cooling Systems\u003c\/h2\u003e\n\n\u003cp\u003eOn multi-story data center buildings and large campus projects, chilled water riser welding — the vertical pipe runs that carry cool chilled water up through building cores to each floor — is one of the more technically demanding installation scopes in the project. Riser welding works in tight shaft conditions, often in positions that require a welder to weld in 2G (horizontal fixed), 5G (pipe axis horizontal), or even 6G (inclined) positions. A skilled industrial TIG welder doing riser installation works at 8 to 15 joints per shift — slower than shop work because of access restrictions and position requirements, but the quality standard is exactly the same: full-penetration ASME B31.3 welds with back-purge on stainless.\u003c\/p\u003e\n\n\u003cp\u003eDistrict cooling systems — large-scale chilled water systems that serve multiple buildings from a central chiller plant — are built to the same ASME B31.3 process piping standard as data center building mechanical systems. A district cooling system works by circulating cool water (typically 40–45°F supply, 55–60°F return) from centralized chillers through insulated underground distribution mains to multiple buildings on a campus. This type of chilled water system is common on large hyperscale data center campuses where a central chiller plant is more energy-efficient than distributed chillers in each building.\u003c\/p\u003e\n\n\u003cp\u003eDistrict cooling system installation involves:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnderground pipe installation:\u003c\/strong\u003e Pre-insulated chilled water pipe systems installed in excavated trenches or concrete utility tunnels. Weld joints are made in the field by certified industrial welders working in open excavations. Every weld on buried chilled water systems must be completed and hydrostatically tested before backfill — there is no good way to repair a buried weld after installation is complete.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChiller plant manifold welding:\u003c\/strong\u003e Inside the chiller plant, large-bore (8\" to 24\") headers connect multiple chillers to the distribution system. Chiller connection piping requires precision fit-up to match chiller nozzle orientations — a good chiller installation welder confirms nozzle-to-nozzle dimensions before any pipe cut is made. Time spent on fit-up verification is time saved on rework.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump and valve systems:\u003c\/strong\u003e Primary and secondary pump systems require precise pipe installation to minimize pump suction-side turbulence. Variable frequency drive (VFD) pump systems in modern data center chiller plants cool more efficiently when the piping systems around them are installed to design specifications — correct eccentric reducer orientation, adequate straight-run upstream of pump suction, and properly supported headers that don't transfer thermal stress to pump flanges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCooling tower risers:\u003c\/strong\u003e Condenser water risers connecting cooling towers on the roof to chiller condensers in the plant require weld joints at every floor penetration. These cool water riser joints are typically 4\" to 12\" carbon steel, welded and painted before risers are installed through floor sleeves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor weld consumables on district cooling, campus chilled water distribution, and multi-building campus installation, WeldingMart's commercial account program provides volume pricing and project BOM quoting. For an installation project consuming 50+ lbs of ER316L or ER308L per week, a commercial account with recurring delivery schedule is the most time-efficient procurement solution. Call 877-532-WELD or visit the hub page to open an account: \u003ca href=\"\/pages\/data-center-construction-welding-supplies\"\u003eWelding Supplies for Data Center Construction →\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003ch2\u003eSelecting the Right Chilled Water Piping Welding Supplies — A Field Guide\u003c\/h2\u003e\n\n\u003cp\u003eThe right welding supplies for chilled water piping work depend on four factors: the base metal specification, the process fluid, the code requirement for the system, and whether the work is field installation or prefab shop fabrication. Getting the right answer on each factor takes time up front but saves significant time downstream — wrong filler, wrong documentation, wrong purge gas purity can all cause pressure test failures or ASME documentation rejections that are expensive to resolve in the field. Here is how to select the right consumables for your chilled water piping scope:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 1: Confirm the base metal.\u003c\/strong\u003e The single most important selection criterion for chilled water pipe welding is the base metal specification. Before you order a single rod of ER316L or ER308L, confirm whether the piping is specified as 304L or 316L stainless. The good news is that this information is always on the piping material specification (PMS) in the project drawings — you should not need to guess. If the PMS is not available, the type marking on the pipe end will identify the alloy. It is good practice to verify base metal type before ordering filler for any new chilled water piping scope.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 2: Determine if the work is field or shop.\u003c\/strong\u003e Chilled water piping welding in a field installation environment continues right up to the hydrotest. Shop fabrication allows a controlled environment that works better for orbital processes and produces more consistent weld quality. The type of work determines the process: field installation often works best with manual TIG root passes and SMAW fill on larger pipe sizes; shop environments work well with orbital TIG for 1\/2\" to 4\" OD tubing. Select your consumable based on the process — don't order orbital-pack 0.035\" ER316LSi for field manual TIG work on 4\" schedule 40S pipe.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 3: Verify the code and the purge requirement.\u003c\/strong\u003e All full-penetration butt welds on ASME B31.3 stainless chilled water piping require back-purge with argon. There is no good workaround for this requirement — skipping purge produces sugaring that will fail visual inspection. The time to build a purge setup is before the root pass, not during. Continue the purge through the root pass and at least the first fill pass. For field chilled water piping joints where building access is tight, inflatable purge plugs are the right tool — they build up and continue purge gas flow in confined areas where traditional purge tape dams are difficult to apply. Verify the purge gas purity (99.995% argon minimum) at the beginning of each shift with an oxygen analyzer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 4: Order based on the right field type.\u003c\/strong\u003e Stainless chilled water pipe comes in several different standard types (schedules): Schedule 10S for most small-bore (1\/2\" to 4\") high-purity cooling system piping, Schedule 40S for heavier-wall applications, and Schedule 5S for very thin-wall applications in certain automated welding programs. The close relationship between pipe schedule, wall thickness, and filler diameter selection means that ordering the right filler type requires knowing the pipe schedule, not just the material and nominal pipe size. Close this information loop before ordering: confirm schedule with the piping contractor or from the project drawings before the order is placed.\u003c\/p\u003e\n\n\u003ch2\u003eChilled Water Piping Field Work — What Good Installation Looks Like\u003c\/h2\u003e\n\n\u003cp\u003eGood chilled water piping installation works systematically from commissioning plan to final pressure test. A chilled water piping system works correctly only when every component — every weld, every support, every valve connection — is installed to specification and functions as designed. Chilled water piping that works on first hydrotest is the result of time invested up front in the right sequence: good joint preparation, good fit-up, good back-purge setup, and good field quality practices. It takes time to build good habits into a crew, but the time spent on quality up front saves significant time on rework and re-test later in the project.\u003c\/p\u003e\n\n\u003cp\u003eHere is what good chilled water system installation looks like from the field:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGood fit-up works better than fast tacking.\u003c\/strong\u003e A chilled water system weld made on a good fit-up joint takes no more time than one made on poor fit-up — but it produces a significantly better root pass. Build time for good fit-up into every joint; it is not time wasted.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater piping welds need good purge verification.\u003c\/strong\u003e Every stainless water piping joint — chilled water supply, chilled water return, glycol loop — requires a good back-purge. Verify oxygen level before starting the root pass on every water piping weld. This works to prevent ID oxidation that causes water piping welds to fail corrosion testing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuild a good documentation habit from day one.\u003c\/strong\u003e Every weld in the chilled water system needs a weld traveler entry from first tack to final acceptance. Build this good habit into the crew's daily work from the start of the project. Good documentation works both ways: it protects the contractor at inspection and gives the facility engineer confidence in the system they are accepting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTime your consumable orders to the build schedule.\u003c\/strong\u003e Running out of ER316L or purge tape mid-shift is a build schedule problem, not just a supply problem. Good project execution works by keeping 1–2 weeks of consumable buffer on site. WeldingMart’s commercial account program is built to support that approach — we provide fast replenishment so the works keeps moving.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eField Installation Experience — What Skilled Chilled Water Welding Teams Bring to the Job\u003c\/h2\u003e\n\n\u003cp\u003eEvery chilled water system is ultimately built by hand — by piping welders and mechanical installers who bring their field experience to the job site every day and execute joint after joint to a consistent quality standard. The commissioning of a 100 MW liquid-cooled data center is not a theoretical exercise; it is the sum of hundreds of decisions made by technicians who understand what good chilled water piping installation looks like from the ground up. Understanding what experienced field teams bring to a chilled water project helps project managers staff correctly and helps procurement teams appreciate why the consumable supply chain matters.\u003c\/p\u003e\n\n\u003cp\u003eExperienced chilled water piping welders bring two critical capabilities to a project: first, the technical hand skills to produce consistent, full-penetration ASME B31.3 root passes on stainless pipe in field positions — 2G, 5G, and 6G — without defects that require costly X-ray repair cycles. Second, the situational judgment to recognize when fit-up is marginal, when a purge setup is inadequate, or when a pipe support is mislocated before the weld is made. These are judgment calls that come from years of field experience on chilled water and process piping projects, and they cannot be replicated by less experienced crews regardless of how clear the drawings are. A welder who has never built a chilled water system in a real data center brings skill but not the experience-specific pattern recognition that makes a field team truly efficient.\u003c\/p\u003e\n\n\u003cp\u003eWhat the best chilled water installation teams bring to commissioning week: a fully documented weld record package, zero open punch-list items on the piping scope, and a history of pressure tests that pass on first attempt because the back-purge setup was correct on every stainless root pass. That kind of commissioning experience — delivered hand-off to the mechanical engineer with a clean test record — is what sets elite field crews apart. WeldingMart supports those teams with consumables that perform exactly as specified, documentation packages ready for the CWI, and a commercial account that keeps the right product on site from day one to final hydrotest. Call 877-532-WELD to set up your project account: we bring the supply side experience so your crew can bring their best work.\u003c\/p\u003e\n\n\u003ch2\u003eCommercial Procurement and Account Setup\u003c\/h2\u003e\n\n\u003cp\u003eMechanical contractors and prefab piping fabricators can open a commercial account with WeldingMart for Net-30 terms, volume pricing on TIG rod and MIG wire, and dedicated project support. Submit your BOM via our commercial form at the \u003ca href=\"\/pages\/data-center-construction-welding-supplies\"\u003edata center hub page\u003c\/a\u003e or call 877-532-WELD. Quotes returned within one business day. Commercial account approval: one business day for qualified contractors. Email: \u003ca href=\"mailto:dkossel@weldingmart.com\"\u003edkossel@weldingmart.com\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003ch2\u003eGetting Started with Chilled Water Piping Welding Supplies\u003c\/h2\u003e\n\n\u003cp\u003eThe first step in getting the right chilled water piping welding supplies for your project is a quick review of the project specifications. A good level of specification review at the start brings significant time savings later: confirmed filler metal selection, confirmed documentation requirements, confirmed purge gas purity spec — all of these are easier to select and handle at the beginning of the project than mid-execution. Here is the step-by-step approach we recommend for new projects:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDay 1: Confirm the piping spec and base metal.\u003c\/strong\u003e On the first day of procurement planning, confirm that you have a copy of the piping material specification from the project engineer. This one-page specification will tell you the base metal type (304L or 316L), the schedule (10S or 40S), and any code-specific documentation requirements. Good project execution starts with this document in hand.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 2: Select the right filler metal based on the spec.\u003c\/strong\u003e With the piping spec confirmed, filler metal selection is a close-behind step. Select ER308L for 304L base metal, ER316L for 316L base metal. The close relationship between base metal type and filler type makes this selection straightforward. Call 877-532-WELD if you have questions at this step — we bring experience from hundreds of data center piping projects and can confirm your selection quickly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 3: Confirm documentation level and order.\u003c\/strong\u003e The right level of documentation (C of C only, or C of C plus MTR\/heat analysis) should be confirmed at order time. It is good practice to request MTRs on all ER316L orders for high-purity applications — having them on hand avoids a request to the supplier mid-project. Order early to bring ample buffer stock to the job site — chilled water piping projects can consume TIG rod faster than expected when the crew is productive.\u003c\/p\u003e\n\n\u003cp\u003eWeldingMart brings a day-one response to commercial account inquiries: we can confirm filler metal selection, documentation availability, and project pricing on the same business day you contact us. Call 877-532-WELD or email dkossel@weldingmart.com to get your chilled water piping welding supply program started.\u003c\/p\u003e\n\n\u003ch2\u003eChilled Water Piping Works Best When Consumables Are Right\u003c\/h2\u003e\n\n\u003cp\u003eA chilled water system works as designed only when every element is executed correctly — and that includes the consumables. Good chilled water piping field work requires the right filler metal, the right shielding gas purity, and good back-purge setup on every stainless root pass. When the consumable side works, the water piping works. When it does not — when field teams work with the wrong filler, or with a shielding gas that does not meet the required purity — the water piping system fails at test time in ways that are expensive to trace and repair.\u003c\/p\u003e\n\n\u003cp\u003eGood water piping execution at the field level requires time to set up each joint correctly before the arc starts: time to verify the purge, time to check the fit-up, time to confirm the filler rod matches the WPS. Experienced field welders know this and build that time into their work. Less experienced crews try to save time in joint setup and spend more time repairing defects later. The math of good water piping installation always works the same way: time spent at setup works out to less time overall than time spent on rework.\u003c\/p\u003e\n\n\u003cp\u003eWeldingMart’s commercial account program is designed to support good field execution by ensuring the right products are on site when the crew needs them. A field team that works with consistent, properly documented filler metal — same brand, same lot, same C of C format — is a field team that works efficiently. Good weld documentation works best when the consumable traceability is clean from the start. Call 877-532-WELD to set up a commercial account that supports your chilled water piping field team from day one to final pressure test.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Collections\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/data-center-process-piping-consumables\"\u003eData Center Process Piping Consumables — ER316L, ER308L, ER309L for ASME B31.3 →\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/tig-rod-welding-rods\"\u003eTIG Welding Rods \u0026amp; Filler Rod (Full Catalog) →\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/welding-wire-mig-flux\"\u003eMIG Welding Wire (Full Catalog) →\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/pages\/data-center-construction-welding-supplies\"\u003eWelding Supplies for Data Center Construction (Hub) →\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- custom.faq METAFIELD — deliver as JSON per SOP §31.1, NOT inline in this descriptionHtml --\u003e\n\u003c!-- FAQ payload (for custom.faq metafield write — must pass Gate 1 array-shape before write):\n[\n  {\"question\": \"What stainless steel grade is used for data center chilled water piping — 304L or 316L?\", \"answer_html\": \"\u003cp\u003eBoth 304L and 316L are used in data center chilled water systems, with the choice driven by the facility specification and process fluid. 304L (with ER308L filler) is appropriate for clean chilled water loops with minimal chloride exposure. 316L (with ER316L filler) is specified where chloride resistance is required — condenser water systems, outdoor piping in northern climates, or high-purity DLC loops where the hyperscaler facility standard requires 316L. When the specification is silent on grade, 316L and ER316L is the conservative choice at a modest cost premium.\u003c\/p\u003e\"},\n  {\"question\": \"Is back-purge argon required for all chilled water TIG root passes under ASME B31.3?\", \"answer_html\": \"\u003cp\u003eYes. ASME B31.3 requires full-penetration butt welds on austenitic stainless piping to be back-purged with inert gas (100% argon) during root pass welding to prevent weld-side oxidation (sugaring). The purge must maintain an oxygen level below approximately 50 ppm at the weld root to achieve an acceptable visual appearance per ASME B31.3 Table 341.3.2. Purge gas is maintained until the root and at least the first fill pass are complete to protect the weld root from oxidation during cooling.\u003c\/p\u003e\"},\n  {\"question\": \"What is a cooling distribution unit (CDU) and how does it affect piping consumable selection?\", \"answer_html\": \"\u003cp\u003eA cooling distribution unit (CDU) is a skid-mounted heat exchanger and pump system that interfaces between a facility chilled water loop and the direct liquid cooling (DLC) loop serving GPU servers. CDUs typically use plate heat exchangers (PHE) to transfer heat between the facility water and a high-purity secondary fluid (deionized water or dielectric coolant) that flows directly to GPU cold plates. CDU connection piping is almost always 316L stainless with ER316L filler, and may be subject to ASME BPE cleanliness requirements on the DLC side. Shop-fabricated CDU skids commonly use orbital GTAW for small-bore (1\/2\\\" to 2\\\") connection piping.\u003c\/p\u003e\"},\n  {\"question\": \"Can carbon steel piping be used for data center chilled water distribution?\", \"answer_html\": \"\u003cp\u003eYes — carbon steel (A53 or A106 Grade B) is commonly used for large-bore (6\\\" and larger) primary chilled water headers on hyperscale campuses where cost drives the material selection and the process fluid is treated city water rather than high-purity deionized water. Carbon steel is acceptable under ASME B31.3 for clean water service when properly coated and cathodically protected. However, carbon steel is not appropriate for high-purity secondary loops, DLC applications, or any piping that connects to stainless equipment without a proper dissimilar-metal transition joint using ER309L filler.\u003c\/p\u003e\"},\n  {\"question\": \"What is the correct filler metal for welding stainless chilled water piping to carbon steel flanges?\", \"answer_html\": \"\u003cp\u003eER309L is the correct filler for dissimilar-metal joints between austenitic stainless steel (304L or 316L) and carbon steel. ER309L's higher chrome and nickel content (23-25% Cr, 12-14% Ni) resists dilution from the carbon steel base metal, preventing martensite formation at the fusion line that could cause cracking. The weld procedure must be qualified for the specific P-Number combination — P-No. 8 (stainless) to P-No. 1 (carbon steel) — under ASME Section IX. Preheat may be required on the carbon steel side depending on the carbon equivalent.\u003c\/p\u003e\"},\n  {\"question\": \"How do I size purge tape for a 2-inch chilled water piping back-purge?\", \"answer_html\": \"\u003cp\u003eFor a 2-inch nominal pipe size (NPS 2, approximately 2.375\\\" OD) butt weld back-purge, use 2\\\" width water-soluble purge tape to dam both sides of the weld joint, typically 6\\\" to 12\\\" back from the weld centerline on each side. The purge volume between dams is approximately 0.06 cubic feet — achievable with 3-5 minutes of argon purge flow at 10 CFH before welding begins. Verify oxygen level with an analyzer before starting the root pass. WeldingMart stocks 2\\\" and 4\\\" water-soluble purge tape for all data center piping sizes. Call 877-532-WELD for purge tape and back-purge accessory availability.\u003c\/p\u003e\"}\n]\n--\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"CollectionPage\", \"@id\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop#collection\", \"name\": \"Data Center Chilled Water \u0026 Cooling Loop Welding\", \"description\": \"Welding consumables for data center chilled water, condenser water, and glycol loop piping — ER308L, ER316L, ER309L TIG rod and MIG wire. ASME B31.3 qualified, same-day shipping, commercial accounts.\", \"url\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\", \"mainEntity\": {\"@type\": \"ItemList\", \"name\": \"Chilled Water and Cooling Loop Welding Consumables\", \"description\": \"TIG rod and MIG wire for ASME B31.3 chilled water, condenser water, and glycol distribution piping in hyperscale data centers\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"ER316L TIG Rod — Chilled Water and CDU Connection Piping\", \"description\": \"AWS A5.9 ER316L for 316\/316L chilled water and high-purity CDU connection piping. Low carbon, 2-3% Mo, FN 3-8 typical. Back-purge argon required.\", \"url\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"ER308L TIG Rod — 304L Chilled Water Distribution Piping\", \"description\": \"AWS A5.9 ER308L for 304\/304L stainless chilled water headers and secondary distribution piping under ASME B31.3.\", \"url\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"ER309L TIG Rod — Stainless-to-Carbon Steel Transition Welds\", \"description\": \"AWS A5.9 ER309L for dissimilar-metal joints between stainless chilled water piping and carbon steel condenser water headers, flanges, and equipment nozzles.\", \"url\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\"}, {\"@type\": \"ListItem\", \"position\": 4, \"name\": \"ER316L MIG Wire — Glycol Loop and CDU Skid Fabrication\", \"description\": \"AWS A5.9 ER316L MIG wire for semi-automatic GMAW on glycol distribution piping and prefab CDU skid stainless piping assemblies.\", \"url\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\"}]}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Service\", \"serviceType\": \"Welding Supplies Distribution\", \"provider\": {\"@type\": \"Organization\", \"name\": \"WeldingMart.com\", \"url\": \"https:\/\/weldingmart.com\", \"telephone\": \"+1-877-532-9353\"}, \"areaServed\": [{\"@type\": \"State\", \"name\": \"Wisconsin\"}, {\"@type\": \"State\", \"name\": \"Illinois\"}, {\"@type\": \"State\", \"name\": \"Minnesota\"}, {\"@type\": \"State\", \"name\": \"Iowa\"}, {\"@type\": \"State\", \"name\": \"Indiana\"}, {\"@type\": \"State\", \"name\": \"Ohio\"}], \"description\": \"Distribution of TIG filler rod and MIG wire for data center chilled water, condenser water, and glycol cooling loop piping — ASME B31.3 qualified, commercial accounts, same-day shipping from Wisconsin.\", \"hasOfferCatalog\": {\"@type\": \"OfferCatalog\", \"name\": \"Data Center Chilled Water \u0026 Cooling Loop Welding Consumables\", \"url\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/weldingmart.com\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Welding Supplies for Data Center Construction\", \"item\": \"https:\/\/weldingmart.com\/pages\/data-center-construction-welding-supplies\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Data Center Chilled Water \u0026 Cooling Loop Welding\", \"item\": \"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What stainless filler metal should I use for ER316L chilled water piping welded to ASME B31.1?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For chilled water loops fabricated in 304L or 316L austenitic stainless tubing, the standard filler is ER316L (AWS A5.9) for the 316L side and ER308L for 304L-to-304L joints. ER316L is preferred when joining mixed 304L\/316L or when corrosion margin matters in cooling-water service. Use ER309L only for dissimilar carbon-to-stainless transitions. WeldingMart stocks all three in 1\/16\\\" and 3\/32\\\" cut-length TIG rod (36\\\" lengths, 10 lb tubes) and 0.030\\\"\/0.035\\\"\/0.045\\\" MIG wire (33 lb spools) — same-day shipping on in-stock SKUs ordered before 2 PM CST.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to back-purge stainless chilled water welds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — any open-root stainless weld on chilled water piping must be back-purged with argon (or 95\/5 Ar\/H2 for austenitic) to prevent root oxidation, sugaring, and chromium depletion in the heat-affected zone. ASME B31.1 and BPE both require purged roots on stainless process piping. WeldingMart stocks purge dams, soluble paper, and purge monitors (oxygen analyzers down to 10 ppm) — call 877-532-WELD to spec a purge kit for your job.\"}}, {\"@type\": \"Question\", \"name\": \"What's the right TIG amperage and rod size for 1\/2\\\" schedule 10S 316L tube on a chilled water loop?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For 1\/2\\\" sch 10S 316L (0.083\\\" wall), use 0.045\\\" or 1\/16\\\" ER316L rod at 70–90 amps DCEN with a 3\/32\\\" 2% lanthanated tungsten, 100% argon shielding at 18–22 CFH, and argon back-purge at 5 CFH minimum. Travel speed roughly 4–6 IPM with a slight stringer technique. Heavier wall (sch 40 \/ 0.109\\\") moves up to 1\/16\\\" or 3\/32\\\" rod and 95–115 amps. Always run a procedure qualification per ASME Section IX before production welds on commissioned chilled water service.\"}}, {\"@type\": \"Question\", \"name\": \"Can WeldingMart provide a Certificate of Conformance for the ER316L rod going into a hyperscale data center BOM?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — every shipment of stainless TIG rod and MIG wire from WeldingMart ships with a Certificate of Conformance traceable to AWS A5.9, including heat number, mill source, and chemical composition. Mill test reports (MTRs) are available on request for additional traceability when the project owner or general contractor requires CMTR documentation for ASME Section IX qualification. Request MTRs at \u003ca href=\\\"mailto:dkossel@weldingmart.com\\\"\u003edkossel@weldingmart.com\u003c\/a\u003e or call 877-532-WELD.\"}}, {\"@type\": \"Question\", \"name\": \"How fast can you ship a chilled water consumables BOM for a Wisconsin data center project?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"WeldingMart ships from our Wisconsin distribution center — in-stock orders received before 2 PM CST go out same day, with most Midwest deliveries arriving next business day (Wisconsin, Illinois, Minnesota, Iowa, Indiana, Ohio). For large BOMs we can stage shipments to match phased construction schedules — call 877-532-WELD or email \u003ca href=\\\"mailto:dkossel@weldingmart.com\\\"\u003edkossel@weldingmart.com\u003c\/a\u003e with your BOM and timeline.\"}}, {\"@type\": \"Question\", \"name\": \"Do you stock 309L TIG rod for the carbon-to-stainless transitions on chilled water headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. ER309L is the standard buttering filler for dissimilar metal welds between carbon steel headers and 304L\/316L chilled water piping. WeldingMart stocks ER309L in 1\/16\\\" and 3\/32\\\" cut-length TIG rod and 0.035\\\" MIG wire. Always specify ER309L (low-carbon) over straight ER309 for service involving thermal cycling or corrosive condensate — the lower carbon content prevents sensitization at the dilution interface.\"}}]}\u003c\/script\u003e","products":[{"product_id":"lincoln-ed037302-blue-max-316lsi-mig-gmaw-stainless-steel-welding-wire-0-035-in-33-lb-spool","title":"Lincoln ED037302 Blue Max 316LSi MIG GMAW Stainless Steel Welding Wire, 0.035 in, 33 lb Spool","description":"\u003c!-- Lincoln Blue Max ER316LSi 0.035\" 33 lb — Wire Lane F PDP --\u003e\n\u003ch2\u003eLincoln Blue Max ER316LSi Stainless MIG Wire — 0.035 in, 33 lb Spool (ED037302)\u003c\/h2\u003e\n\u003cp\u003eLincoln Electric Blue Max ER316LSi is the standard austenitic stainless MIG wire for applications requiring superior chloride corrosion resistance — specifically, the welding of 316 and 316L stainless steel in marine, chemical processing, pharmaceutical, and food industry environments. Classified \u003cstrong\u003eAWS A5.9\/A5.9M ER316LSi\u003c\/strong\u003e, this 0.035 in (0.9 mm) wire on a 33 lb spool (ED037302) contains 2–3% molybdenum (Mo) in addition to the chromium-nickel austenitic base, making it the correct filler for joining 316 and 316L stainless wherever ER308LSi's molybdenum-free composition would be inadequate. The elevated silicon (0.65–1.00% Si) versus standard ER316L provides better puddle wetting and bead profile in spray arc transfer. The low carbon (≤ 0.03% C) prevents sensitization in heat-affected zones adjacent to 316L base metal. WeldingMart is an authorized Lincoln Electric distributor. Browse the \u003ca href=\"\/collections\/welding-wire\"\u003ecomplete welding wire catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER316LSi per AWS A5.9\/A5.9M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLincoln Part Number\u003c\/td\u003e\n\u003ctd\u003eED037302\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWire Diameter\u003c\/td\u003e\n\u003ctd\u003e0.035 in (0.9 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSpool Weight\u003c\/td\u003e\n\u003ctd\u003e33 lb (15 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCarbon Content\u003c\/td\u003e\n\u003ctd\u003e≤ 0.03% C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSilicon Content\u003c\/td\u003e\n\u003ctd\u003e0.65–1.00% Si\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e18.0–20.0% Cr\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNickel Content\u003c\/td\u003e\n\u003ctd\u003e11.0–14.0% Ni\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum Content\u003c\/td\u003e\n\u003ctd\u003e2.0–3.0% Mo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEP (electrode positive)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003eTri-mix (90% He \/ 7.5% Ar \/ 2.5% CO₂) or 98% Ar \/ 2% O₂\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥ 515 MPa (75,000 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYield Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥ 310 MPa (45,000 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation\u003c\/td\u003e\n\u003ctd\u003e≥ 30%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWelding Process\u003c\/td\u003e\n\u003ctd\u003eGMAW (MIG), spray arc, pulsed MIG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConformances\u003c\/td\u003e\n\u003ctd\u003eAWS A5.9\/A5.9M, ASME SFA-5.9\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications and Industries\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical and bioprocessing:\u003c\/strong\u003e Bioreactors, chromatography columns, and piping in 316L stainless per ASME BPE (Bioprocessing Equipment) standards — 316L is mandated in many bioprocess applications for its resistance to cleaning agents and protein adhesion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine and offshore:\u003c\/strong\u003e 316L stainless hardware, fittings, and structural components exposed to seawater — the 2–3% Mo content significantly increases pitting resistance in chloride environments compared to 304\/ER308LSi.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical processing:\u003c\/strong\u003e Storage and transport vessels for chloride-containing acids, phosphoric acid, and acetic acid where 316L is specified for its superior corrosion resistance over 304.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoastal and poolside architecture:\u003c\/strong\u003e 316L stainless railings, pool equipment, and fittings in salt air or splash zone environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood and dairy with aggressive CIP:\u003c\/strong\u003e High-pressure clean-in-place (CIP) dairy equipment, heat exchangers, and high-chloride process streams where 316L's molybdenum content provides the extra margin over 304.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesalination and water treatment:\u003c\/strong\u003e 316L stainless piping and pump components in seawater desalination plants and coastal water treatment facilities.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProcess Technology: ER316LSi vs. ER308LSi — When Molybdenum Matters\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eER308LSi\u003c\/th\u003e\n\u003cth\u003eER316LSi (this product)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum Content\u003c\/td\u003e\n\u003ctd\u003eNone (\u0026lt; 0.10%)\u003c\/td\u003e\n\u003ctd\u003e2.0–3.0% Mo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePitting Resistance (PREN)\u003c\/td\u003e\n\u003ctd\u003e~25–28\u003c\/td\u003e\n\u003ctd\u003e~30–35 (Mo adds ~10× vs. Cr)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChloride Service\u003c\/td\u003e\n\u003ctd\u003eMild (\u0026lt; ~100 ppm Cl⁻ at room temp)\u003c\/td\u003e\n\u003ctd\u003eModerate (\u0026lt; ~1,000 ppm Cl⁻ at room temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBase Metals\u003c\/td\u003e\n\u003ctd\u003e304, 304L, 308, 308L\u003c\/td\u003e\n\u003ctd\u003e316, 316L, 316Ti\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCost vs. ER308LSi\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e~15–25% premium (Mo content)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePREN (Pitting Resistance Equivalent Number) = %Cr + 3.3×%Mo + 16×%N. Molybdenum is approximately 3.3× more effective than chromium on a per-percent basis for pitting resistance. This is why ER316LSi, even with slightly lower chromium than ER308LSi, has significantly higher chloride resistance. Source: \u003ca href=\"https:\/\/www.lincolnelectric.com\/en-us\/products\/welding-wire\/mig-gmaw-wire\/blue-max-stainless-mig-wire\/\" target=\"_blank\" rel=\"noopener\"\u003eLincoln Electric Blue Max Stainless Wire\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003ePolarity and Welding Parameters\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMaterial Thickness\u003c\/th\u003e\n\u003cth\u003eWFS (in\/min)\u003c\/th\u003e\n\u003cth\u003eVoltage (V)\u003c\/th\u003e\n\u003cth\u003eAmperage\u003c\/th\u003e\n\u003cth\u003eGas \/ Flow\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e12 ga (0.104 in)\u003c\/td\u003e\n\u003ctd\u003e270–340\u003c\/td\u003e\n\u003ctd\u003e23–25\u003c\/td\u003e\n\u003ctd\u003e120–160 A\u003c\/td\u003e\n\u003ctd\u003e98\/2 Ar\/O₂, 25 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/8 in (3.2 mm)\u003c\/td\u003e\n\u003ctd\u003e330–410\u003c\/td\u003e\n\u003ctd\u003e25–27\u003c\/td\u003e\n\u003ctd\u003e150–195 A\u003c\/td\u003e\n\u003ctd\u003e98\/2 Ar\/O₂, 28 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/16 in (4.8 mm)\u003c\/td\u003e\n\u003ctd\u003e390–470\u003c\/td\u003e\n\u003ctd\u003e26–28\u003c\/td\u003e\n\u003ctd\u003e185–230 A\u003c\/td\u003e\n\u003ctd\u003eTri-mix, 30 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/4 in (6.4 mm)\u003c\/td\u003e\n\u003ctd\u003e450–530\u003c\/td\u003e\n\u003ctd\u003e27–29\u003c\/td\u003e\n\u003ctd\u003e215–265 A\u003c\/td\u003e\n\u003ctd\u003eTri-mix, 35 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between ER308LSi and ER316LSi for stainless MIG welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The key difference is molybdenum: ER316LSi (AWS A5.9) contains 2–3% Mo; ER308LSi contains none. Molybdenum significantly increases resistance to pitting and crevice corrosion in chloride environments. Use ER308LSi for welding 304\/304L stainless in mild to moderate service. Use ER316LSi for welding 316\/316L stainless in chloride-rich environments (seawater, chloride-containing chemicals, aggressive CIP cleaning).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use ER308LSi instead of ER316LSi to save cost on 316L stainless welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Technically, ER308LSi can weld 316L, but the resulting weld metal does not contain molybdenum. In chloride or acidic service, the weld joint becomes the weak point in a 316L structure — the weld corrodes first. For any application where 316L was specified for its chloride resistance, you must use ER316LSi (or at minimum ER316L) to maintain the design's corrosion performance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does ER316LSi require different shielding gas than ER308LSi?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. Both ER316LSi and ER308LSi use the same stainless shielding gas: tri-mix (90% He \/ 7.5% Ar \/ 2.5% CO₂) or 98% Ar \/ 2% O₂. The presence of molybdenum in ER316LSi does not require any change to the shielding gas mixture or flow rate.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is ER316LSi required for ASME BPE pharmaceutical welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ASME BPE (Bioprocessing Equipment) standard requires that filler metals match the base metal composition's corrosion resistance. When welding 316L stainless per ASME BPE, ER316LSi is the standard matching filler metal. The standard also specifies surface finish and inspection requirements for welds in direct product contact service. A qualified welding procedure per ASME Section IX is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the pitting resistance of ER316LSi compared to ER308LSi welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER316LSi weld metal has a Pitting Resistance Equivalent Number (PREN) of approximately 30–35, compared to ~25–28 for ER308LSi weld metal. The 2–3% molybdenum in ER316LSi contributes approximately 6.6–10 PREN points above the chromium-only base. This translates to significantly better resistance to pitting corrosion in chloride solutions, making ER316LSi the correct choice for seawater, coastal, and industrial chloride-containing environments.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003cdl class=\"faq-list\"\u003e\n  \u003cdt\u003eWhat is the difference between ER308LSi and ER316LSi?\u003c\/dt\u003e\n  \u003cdd\u003eER316LSi contains 2–3% molybdenum; ER308LSi contains none. Molybdenum greatly increases chloride pitting resistance. Use ER308LSi for 304\/304L in mild service; use ER316LSi for 316\/316L in chloride-rich, marine, or aggressive chemical environments.\u003c\/dd\u003e\n  \u003cdt\u003eCan I substitute ER308LSi for ER316LSi to save cost on 316L stainless welding?\u003c\/dt\u003e\n  \u003cdd\u003eNot recommended for chloride or acidic service. The weld joint becomes a corrosion weak point in a 316L structure without molybdenum-containing filler. Use ER316LSi to maintain the design's corrosion performance.\u003c\/dd\u003e\n  \u003cdt\u003eDoes ER316LSi require different shielding gas than ER308LSi?\u003c\/dt\u003e\n  \u003cdd\u003eNo — both use tri-mix or 98\/2 Ar\/O₂. Molybdenum content does not require a different shielding gas.\u003c\/dd\u003e\n  \u003cdt\u003eIs ER316LSi required for ASME BPE pharmaceutical welding?\u003c\/dt\u003e\n  \u003cdd\u003eYes — ASME BPE requires filler metals matching the base metal's corrosion resistance. For 316L stainless in bioprocess service, ER316LSi with qualified ASME Section IX procedure is the standard.\u003c\/dd\u003e\n  \u003cdt\u003eWhat is the pitting resistance of ER316LSi compared to ER308LSi?\u003c\/dt\u003e\n  \u003cdd\u003eER316LSi has PREN ≈ 30–35 vs. ≈ 25–28 for ER308LSi. The 2–3% Mo in ER316LSi adds approximately 7–10 PREN points, providing substantially better chloride pitting resistance.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003cp\u003e\u003cstrong\u003eRelated products:\u003c\/strong\u003e \u003ca href=\"\/products\/lincoln-ed037303-blue-max-316lsi-mig-gmaw-welding-wire\"\u003eBlue Max ER316LSi MIG Wire family hub (ED037303)\u003c\/a\u003e | \u003ca href=\"\/products\/lincoln-ed037250-blue-max-308lsi-mig-gmaw-stainless-steel-welding-wire-0-035-in-33-lb-spool\"\u003eBlue Max ER308LSi 0.035 in, 33 lb (ED037250)\u003c\/a\u003e | \u003ca href=\"\/collections\/welding-wire\"\u003eAll Welding Wire\u003c\/a\u003e\u003c\/p\u003e\n\u003c!-- Source: Lincoln Electric ED037302 product data; AWS A5.9\/A5.9M; ASME BPE standard --\u003e\n","brand":"Lincoln Electric","offers":[{"title":"","offer_id":43638056321175,"sku":"ED037302","price":666.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed037302-blue-max-316lsi-mig-gmaw-stainless-steel-welding-wire-0-035-in-33-lb-spool-lincoln-electric.jpg?v=1766083706"},{"product_id":"lincoln-ed037303-blue-max-316lsi-mig-gmaw-welding-wire","title":"Lincoln ED037303 Blue Max 316LSi MIG GMAW Stainless Steel Welding Wire","description":"\u003c!-- Lincoln Blue Max ER316LSi Family Hub — Wire Lane F PDP --\u003e\n\u003ch2\u003eLincoln Blue Max ER316LSi Stainless MIG Wire — Full Diameter and Package Selection (ED037303)\u003c\/h2\u003e\n\u003cp\u003eLincoln Electric Blue Max ER316LSi (ED037303) is the complete family hub for the premier molybdenum-bearing austenitic stainless MIG wire for chloride-resistant applications. Classified \u003cstrong\u003eAWS A5.9\/A5.9M ER316LSi\u003c\/strong\u003e, Blue Max 316LSi is available in 0.030 in, 0.035 in, and 0.045 in diameters in 25 lb spool, 33 lb spool, and 250 lb\/500 lb bulk Accu-Trak drum packages. Its 2–3% molybdenum content elevates pitting resistance well above ER308LSi, making it the mandatory filler metal when welding 316, 316L, and 316Ti base metals for service in seawater, chloride-containing chemicals, pharmaceutical CIP systems, and offshore environments. The elevated silicon (0.65–1.00% Si) provides excellent spray arc puddle flow; the low carbon (≤ 0.03% C) prevents sensitization. WeldingMart is an authorized Lincoln Electric distributor carrying the complete Blue Max 316LSi diameter and package lineup. See the full \u003ca href=\"\/collections\/welding-wire\"\u003ewelding wire catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER316LSi per AWS A5.9\/A5.9M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLincoln Product Family\u003c\/td\u003e\n\u003ctd\u003eBlue Max 316LSi (ED037302, ED037303, ED019300, ED023963, ED029772, ED029773)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAvailable Diameters\u003c\/td\u003e\n\u003ctd\u003e0.030 in, 0.035 in, 0.045 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAvailable Packages\u003c\/td\u003e\n\u003ctd\u003e25 lb spool, 33 lb spool, 250 lb Accu-Trak drum, 500 lb Accu-Trak drum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCarbon Content\u003c\/td\u003e\n\u003ctd\u003e≤ 0.03% C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSilicon Content\u003c\/td\u003e\n\u003ctd\u003e0.65–1.00% Si\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e18.0–20.0% Cr\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNickel Content\u003c\/td\u003e\n\u003ctd\u003e11.0–14.0% Ni\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum Content\u003c\/td\u003e\n\u003ctd\u003e2.0–3.0% Mo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEP (electrode positive)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003eTri-mix (90% He \/ 7.5% Ar \/ 2.5% CO₂) or 98% Ar \/ 2% O₂\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥ 515 MPa (75,000 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYield Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥ 310 MPa (45,000 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation\u003c\/td\u003e\n\u003ctd\u003e≥ 30%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWelding Processes\u003c\/td\u003e\n\u003ctd\u003eGMAW (MIG), spray arc, pulsed MIG, short arc\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConformances\u003c\/td\u003e\n\u003ctd\u003eAWS A5.9\/A5.9M, ASME SFA-5.9\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications and Industries\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical and biotechnology:\u003c\/strong\u003e Clean utility piping, bioreactors, chromatography systems, and WFI (water for injection) distribution loops in 316L stainless per ASME BPE — the industry standard specifies ER316LSi as the matching filler.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOffshore oil and gas:\u003c\/strong\u003e Subsea piping, topsides fittings, and process equipment in 316L stainless exposed to seawater or production brines with elevated chloride content.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine and shipbuilding:\u003c\/strong\u003e 316L stainless hardware, shafts, propeller housings, and structural fittings in saltwater service — pitting resistance is a critical design requirement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical processing (halide environments):\u003c\/strong\u003e Vessels, reactors, and piping handling phosphoric acid, hydrochloric acid dilutions, sodium chloride brines, and other halide-containing process streams.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoastal and infrastructure stainless:\u003c\/strong\u003e 316L stainless railings, architectural elements, and utility structures in direct salt air or salt spray exposure zones.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-purity semiconductor fabrication:\u003c\/strong\u003e Ultra-pure water (UPW) and chemical distribution piping in 316L electropolished stainless for semiconductor fabs — ER316LSi is the standard filler for orbital TIG-quality MIG applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDiameter and Package Selection Guide\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003eMaterial Range\u003c\/th\u003e\n\u003cth\u003eBest Transfer Mode\u003c\/th\u003e\n\u003cth\u003eLincoln Part Numbers\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.030 in\u003c\/td\u003e\n\u003ctd\u003e18 ga – 3\/16 in (0.048–4.8 mm)\u003c\/td\u003e\n\u003ctd\u003eShort arc, pulsed MIG\u003c\/td\u003e\n\u003ctd\u003eED023963 (25 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.035 in\u003c\/td\u003e\n\u003ctd\u003e14 ga – 1\/4 in (0.075–6.4 mm)\u003c\/td\u003e\n\u003ctd\u003eSpray arc, pulsed MIG\u003c\/td\u003e\n\u003ctd\u003eED037302 (33 lb), ED029772 (500 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.045 in\u003c\/td\u003e\n\u003ctd\u003e3\/16 in – 1\/2 in (4.8–12.7 mm)\u003c\/td\u003e\n\u003ctd\u003eSpray arc, pulsed MIG\u003c\/td\u003e\n\u003ctd\u003eED037303 (this page), ED019300 (1\/16 in 25 lb), ED029773 (500 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor robotic 316L stainless welding in pharmaceutical or semiconductor applications, the 250 lb or 500 lb Accu-Trak drum format significantly reduces changeover time. Use tri-mix shielding gas at 30–40 CFH for production spray arc. Source: \u003ca href=\"https:\/\/www.lincolnelectric.com\/en-us\/products\/welding-wire\/mig-gmaw-wire\/blue-max-stainless-mig-wire\/\" target=\"_blank\" rel=\"noopener\"\u003eLincoln Electric Blue Max Stainless Wire Product Family\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003ePolarity and Welding Parameters\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003eMaterial Thickness\u003c\/th\u003e\n\u003cth\u003eWFS (in\/min)\u003c\/th\u003e\n\u003cth\u003eVoltage (V)\u003c\/th\u003e\n\u003cth\u003eAmperage\u003c\/th\u003e\n\u003cth\u003eGas\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.035 in\u003c\/td\u003e\n\u003ctd\u003e1\/8 in (3.2 mm)\u003c\/td\u003e\n\u003ctd\u003e330–410\u003c\/td\u003e\n\u003ctd\u003e25–27\u003c\/td\u003e\n\u003ctd\u003e150–195 A\u003c\/td\u003e\n\u003ctd\u003eTri-mix, 28 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.035 in\u003c\/td\u003e\n\u003ctd\u003e1\/4 in (6.4 mm)\u003c\/td\u003e\n\u003ctd\u003e420–510\u003c\/td\u003e\n\u003ctd\u003e26–28\u003c\/td\u003e\n\u003ctd\u003e200–255 A\u003c\/td\u003e\n\u003ctd\u003eTri-mix, 35 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.045 in\u003c\/td\u003e\n\u003ctd\u003e3\/16 in (4.8 mm)\u003c\/td\u003e\n\u003ctd\u003e270–350\u003c\/td\u003e\n\u003ctd\u003e25–27\u003c\/td\u003e\n\u003ctd\u003e185–230 A\u003c\/td\u003e\n\u003ctd\u003eTri-mix, 30 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.045 in\u003c\/td\u003e\n\u003ctd\u003e3\/8 in (9.5 mm)\u003c\/td\u003e\n\u003ctd\u003e370–450\u003c\/td\u003e\n\u003ctd\u003e27–29\u003c\/td\u003e\n\u003ctd\u003e235–295 A\u003c\/td\u003e\n\u003ctd\u003eTri-mix, 40 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does the 'Si' in ER316LSi mean, and why does it matter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"'Si' indicates elevated silicon content (0.65–1.00% Si) versus standard ER316L (0.30–0.65% Si). Silicon acts as a deoxidizer and surfactant in the stainless weld puddle, improving fluidity, bead wetting, and visual bead profile. ER316LSi produces noticeably smoother, flatter beads than ER316L in spray arc transfer, which is why it is preferred for visible stainless welds and applications requiring minimal post-weld finishing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need ER316LSi for welding 316L stainless that will be in contact with seawater?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. For 316L stainless in direct seawater service, ER316LSi (containing 2–3% Mo) is the correct matching filler. The weld metal's molybdenum content raises its pitting resistance equivalent number (PREN) to approximately 30–35, making it resistant to pitting from chloride ions at ambient seawater concentrations. Using ER308LSi (no Mo) for 316L seawater applications leaves the weld joint as the weak point in the corrosion performance of the assembly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the best shielding gas for ER316LSi MIG welding on 316L stainless?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Tri-mix (90% He \/ 7.5% Ar \/ 2.5% CO₂) is the premium shielding gas for ER316LSi spray arc, offering the best combination of arc stability, bead appearance, and penetration profile. The alternative 98% Ar \/ 2% O₂ is equally effective and more widely available at lower cost. Both gases prevent the carbon pickup and chromium loss that occur with CO₂-heavy gas mixtures. Avoid C25 (75\/25 Ar\/CO₂) for all stainless MIG applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is ER316LSi available in bulk drum packaging for robotic stainless welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Lincoln Blue Max 316LSi is available in 250 lb (ED035097 and ED035102 per Accu-Trak drum) and 500 lb Accu-Trak drum formats (ED029772 for 0.035 in, ED029773 for 0.045 in) for robotic and semi-automated stainless welding in pharmaceutical, chemical processing, and semiconductor fabrication environments. The Accu-Trak system provides tangle-free layered wire and consistent cast\/helix, critical for robotic welding quality.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"When is ER316LSi required instead of ER308LSi for a stainless MIG welding project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use ER316LSi whenever: (1) the base metal is 316 or 316L stainless; (2) the weld joint will be exposed to chloride concentrations, seawater, or corrosive chemicals where 304's corrosion resistance is inadequate; (3) ASME BPE, pharmaceutical GMP, or food-grade specifications explicitly require 316L-compatible filler; or (4) the design specification requires the weld metal to match the base metal for corrosion resistance testing. In all other cases, ER308LSi may be used for cost efficiency.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003cdl class=\"faq-list\"\u003e\n  \u003cdt\u003eWhat does the 'Si' in ER316LSi mean, and why does it matter?\u003c\/dt\u003e\n  \u003cdd\u003e'Si' = elevated silicon (0.65–1.00%), which improves puddle fluidity and bead wetting in spray arc. ER316LSi produces noticeably smoother, flatter beads than standard ER316L — preferred for cosmetically critical stainless welds.\u003c\/dd\u003e\n  \u003cdt\u003eDo I need ER316LSi for welding 316L stainless in seawater service?\u003c\/dt\u003e\n  \u003cdd\u003eYes. For seawater or high-chloride service on 316L, ER316LSi (PREN ≈ 30–35) is required. Using ER308LSi (no Mo) leaves the weld as the corrosion weak point in the assembly.\u003c\/dd\u003e\n  \u003cdt\u003eWhat is the best shielding gas for ER316LSi MIG welding?\u003c\/dt\u003e\n  \u003cdd\u003eTri-mix (90\/7.5\/2.5 He\/Ar\/CO₂) or 98\/2 Ar\/O₂. Both prevent carbon pickup and chromium loss. Never use C25 on stainless wire.\u003c\/dd\u003e\n  \u003cdt\u003eIs ER316LSi available in bulk drum packaging for robotic stainless welding?\u003c\/dt\u003e\n  \u003cdd\u003eYes — 250 lb and 500 lb Accu-Trak drums (ED029772 for 0.035 in, ED029773 for 0.045 in) for automated pharmaceutical, chemical, and semiconductor welding operations.\u003c\/dd\u003e\n  \u003cdt\u003eWhen is ER316LSi required instead of ER308LSi?\u003c\/dt\u003e\n  \u003cdd\u003eRequired when: base metal is 316\/316L; exposure to chloride, seawater, or aggressive chemicals; ASME BPE\/pharmaceutical\/food-grade specs mandate 316L filler; or corrosion resistance must match 316L base metal performance.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003cp\u003e\u003cstrong\u003eRelated products:\u003c\/strong\u003e \u003ca href=\"\/products\/lincoln-ed037302-blue-max-316lsi-mig-gmaw-stainless-steel-welding-wire-0-035-in-33-lb-spool\"\u003eBlue Max ER316LSi 0.035 in, 33 lb (ED037302)\u003c\/a\u003e | \u003ca href=\"\/products\/lincoln-ed037291-blue-max-309lsi-mig-gmaw-stainless-steel-welding-wire-0-035-in-33-lb-spool\"\u003eBlue Max ER309LSi 0.035 in, 33 lb (ED037291)\u003c\/a\u003e | \u003ca href=\"\/collections\/welding-wire\"\u003eAll Welding Wire\u003c\/a\u003e\u003c\/p\u003e\n\u003c!-- Source: Lincoln Electric Blue Max 316LSi product family data; AWS A5.9\/A5.9M; ASME BPE --\u003e\n","brand":"Lincoln Electric","offers":[{"title":"","offer_id":43638057173143,"sku":"ED037303","price":649.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed037303-blue-max-316lsi-mig-gmaw-stainless-steel-welding-wire-lincoln-electric.jpg?v=1765595106"},{"product_id":"lincoln-ed025428-lincoln-er316-316l-tig-gtaw-welding-rod-1-16-in-10lb-tube","title":"Lincoln ED025428 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/16 in,  10lb Tube","description":"\u003ch2\u003eLincoln Electric — Lincoln ED025428 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/16 in,  10lb Tube\u003c\/h2\u003e\n\u003cp\u003eLINCOLN® ER316\/316L Tungsten Inert Gas Rod has 2-3% molybdenum for increased corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCONFORMANCES:\u003c\/strong\u003e SPECIFICATION, CLASSIFICATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eABS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCWB:\u003c\/strong\u003e CSA W48, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIL:\u003c\/strong\u003e MIL-E-19933E AMD1, MIL-316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e %C, %Cr, %Cu, %Mn, %Mo, %N, %Nb, %Ni, %P, %S, %Si, %Ti, Ferrite Number (Delong ©), Ferrite Number (WRC-1992 ©)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316 Requirement:\u003c\/strong\u003e 0.08 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L Requirement:\u003c\/strong\u003e 0.03 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical Result:\u003c\/strong\u003e 0.01-0.02, 18.2-18.8, 0.03-0.22, 1.7-2.0, 2.2-2.6, 0.03-0.04, 0.01-0.06, 11.6-12.4, 0.01-0.02, 0.02 max., 0.33-0.54, 0.00 max., 7-12, 7-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Diameter:\u003c\/strong\u003e 1\/16 in (1.6 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Package:\u003c\/strong\u003e (10) 1 lb Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (in):\u003c\/strong\u003e 1\/16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (in):\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ED025428\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 0015082254289\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eAWS ER316 Stainless TIG rod is used for GTAW (TIG) welding of stainless steel base metals. Match the filler alloy to the base material: ER308L for 304\/308 stainless, ER309L for dissimilar welds (stainless to carbon steel), ER316L for marine and chemical service, ER317L for higher corrosion resistance than 316L. Using the wrong filler can reduce corrosion resistance at the weld zone.\u003c\/p\u003e\n\u003ch3\u003eCompatibility \u0026amp; sizing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrode type: TIG Rod, Stainless Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy pros choose this\u003c\/h3\u003e\n\u003cp\u003eTIG (GTAW) filler rods give welders precise control over the weld pool because the filler is fed manually rather than carried in the arc. Choosing the correct alloy and diameter keeps weld chemistry, penetration, and bead appearance consistent across procedures.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e1 Year\u003c\/p\u003e\n\u003ch3\u003eFrom the manufacturer\u003c\/h3\u003e\n\u003cp\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/li\u003e\n\u003cli\u003eThe 2-3% molybdenum improves pitting corrosion resistance of the weld deposit\u003c\/li\u003e\n\u003cli\u003eMolybdenum grade increases corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUse for high temperature service applications\u003c\/li\u003e\n\u003cli\u003e0.03% carbon content increases resistance to intergranular corrosion\u003c\/li\u003e\n\u003cli\u003eInk jet printing identification on entire length of electrode\u003c\/li\u003e\n\u003cli\u003eQ2 Lot® - Certificate showing actual wire composition and calculated ferrite number (FN) available online\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lincoln Electric","offers":[{"title":"Default Title","offer_id":43638067658903,"sku":"ED025428","price":176.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed025428-lincoln-er316316l-tig-gtaw-welding-rod-116-in-10-1-lb-tubes-lincoln-electric.jpg?v=1746582356"},{"product_id":"lincoln-ed025431-lincoln-er316-316l-tig-gtaw-welding-rod-3-32-in-10-1-lb-tubes","title":"ER316\/316L 3\/32\" Stainless TIG Welding Rod — 10×1 lb Tubes |","description":"\u003ch2\u003eLincoln Electric — Lincoln ED025431 Lincoln ER316\/316L TIG GTAW Welding Rod, 3\/32 in, 10 1 lb Tubes\u003c\/h2\u003e\n\u003cp\u003eLINCOLN® ER316\/316L Tungsten Inert Gas Rod has 2-3% molybdenum for increased corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCONFORMANCES:\u003c\/strong\u003e SPECIFICATION, CLASSIFICATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eABS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCWB:\u003c\/strong\u003e CSA W48, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIL:\u003c\/strong\u003e MIL-E-19933E AMD1, MIL-316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e %C, %Cr, %Cu, %Mn, %Mo, %N, %Nb, %Ni, %P, %S, %Si, %Ti, Ferrite Number (Delong ©), Ferrite Number (WRC-1992 ©)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316 Requirement:\u003c\/strong\u003e 0.08 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L Requirement:\u003c\/strong\u003e 0.03 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical Result:\u003c\/strong\u003e 0.01-0.02, 18.2-18.8, 0.03-0.22, 1.7-2.0, 2.2-2.6, 0.03-0.04, 0.01-0.06, 11.6-12.4, 0.01-0.02, 0.02 max., 0.33-0.54, 0.00 max., 7-12, 7-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Diameter:\u003c\/strong\u003e 3\/32 in (2.4 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Package:\u003c\/strong\u003e (10) 1 lb Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (in):\u003c\/strong\u003e 3\/32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (in):\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ED025431\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 0015082254319\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; sizing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible families: Lincoln Filler Metals\u003c\/li\u003e\n  \u003cli\u003eElectrode type: TIG Rod, Stainless Steel\u003c\/li\u003e\n  \u003cli\u003eAvailable diameters: 3\/32\" Rod\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy pros choose this\u003c\/h3\u003e\n\u003cp\u003eTIG (GTAW) filler rods give welders precise control over the weld pool because the filler is fed manually rather than carried in the arc. Choosing the correct alloy and diameter keeps weld chemistry, penetration, and bead appearance consistent across procedures.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e1 Year\u003c\/p\u003e\n\u003ch3\u003eFrom the manufacturer\u003c\/h3\u003e\n\u003cp\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/li\u003e\n\u003cli\u003eThe 2-3% molybdenum improves pitting corrosion resistance of the weld deposit\u003c\/li\u003e\n\u003cli\u003eMolybdenum grade increases corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUse for high temperature service applications\u003c\/li\u003e\n\u003cli\u003e0.03% carbon content increases resistance to intergranular corrosion\u003c\/li\u003e\n\u003cli\u003eInk jet printing identification on entire length of electrode\u003c\/li\u003e\n\u003cli\u003eQ2 Lot® - Certificate showing actual wire composition and calculated ferrite number (FN) available online\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"disclaimer\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Lincoln Electric","offers":[{"title":"3\/32 in · 1 lb Tube","offer_id":43638067953815,"sku":"ED025431","price":166.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed025431-lincoln-er316316l-tig-gtaw-welding-rod-332-in-10-1-lb-tubes-lincoln-electric.jpg?v=1746582366"},{"product_id":"lincoln-ed025434-lincoln-er316-316l-tig-gtaw-welding-rod-1-8-in-10-1-lb-tubes","title":"Lincoln ED025434 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/8 in, 10 1 lb Tubes","description":"\u003ch2\u003eLincoln Electric — Lincoln ED025434 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/8 in, 10 1 lb Tubes\u003c\/h2\u003e\n\u003cp\u003eLINCOLN® ER316\/316L Tungsten Inert Gas Rod has 2-3% molybdenum for increased corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCONFORMANCES:\u003c\/strong\u003e SPECIFICATION, CLASSIFICATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eABS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCWB:\u003c\/strong\u003e CSA W48, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIL:\u003c\/strong\u003e MIL-E-19933E AMD1, MIL-316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e %C, %Cr, %Cu, %Mn, %Mo, %N, %Nb, %Ni, %P, %S, %Si, %Ti, Ferrite Number (Delong ©), Ferrite Number (WRC-1992 ©)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316 Requirement:\u003c\/strong\u003e 0.08 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L Requirement:\u003c\/strong\u003e 0.03 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical Result:\u003c\/strong\u003e 0.01-0.02, 18.2-18.8, 0.03-0.22, 1.7-2.0, 2.2-2.6, 0.03-0.04, 0.01-0.06, 11.6-12.4, 0.01-0.02, 0.02 max., 0.33-0.54, 0.00 max., 7-12, 7-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Diameter:\u003c\/strong\u003e 1\/8 in (3.2 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Package:\u003c\/strong\u003e (10) 1 lb Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (in):\u003c\/strong\u003e 1\/8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (in):\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ED025434\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 0015082254340\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; sizing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible families: Lincoln Filler Metals\u003c\/li\u003e\n  \u003cli\u003eElectrode type: TIG Rod, Stainless Steel\u003c\/li\u003e\n  \u003cli\u003eAvailable diameters: 1\/8\" Rod\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy pros choose this\u003c\/h3\u003e\n\u003cp\u003eTIG (GTAW) filler rods give welders precise control over the weld pool because the filler is fed manually rather than carried in the arc. Choosing the correct alloy and diameter keeps weld chemistry, penetration, and bead appearance consistent across procedures.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e1 Year\u003c\/p\u003e\n\u003ch3\u003eFrom the manufacturer\u003c\/h3\u003e\n\u003cp\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/li\u003e\n\u003cli\u003eThe 2-3% molybdenum improves pitting corrosion resistance of the weld deposit\u003c\/li\u003e\n\u003cli\u003eMolybdenum grade increases corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUse for high temperature service applications\u003c\/li\u003e\n\u003cli\u003e0.03% carbon content increases resistance to intergranular corrosion\u003c\/li\u003e\n\u003cli\u003eInk jet printing identification on entire length of electrode\u003c\/li\u003e\n\u003cli\u003eQ2 Lot® - Certificate showing actual wire composition and calculated ferrite number (FN) available online\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lincoln Electric","offers":[{"title":"1\/8 in · 1 lb Tube","offer_id":43638069198999,"sku":"ED025434","price":163.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed025434-lincoln-er316316l-tig-gtaw-welding-rod-18-in-10-1-lb-tubes-lincoln-electric.jpg?v=1746582384"},{"product_id":"lincoln-ed034445-lincoln-er316-316l-tig-gtaw-welding-rod-1-16-in-10-lb-tube","title":"Lincoln ED034445 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/16 in,  10 lb Tube","description":"\u003ch2\u003eLincoln Electric — Lincoln ED034445 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/16 in,  10 lb Tube\u003c\/h2\u003e\n\u003cp\u003eLINCOLN® ER316\/316L Tungsten Inert Gas Rod has 2-3% molybdenum for increased corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCONFORMANCES:\u003c\/strong\u003e SPECIFICATION, CLASSIFICATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eABS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCWB:\u003c\/strong\u003e CSA W48, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIL:\u003c\/strong\u003e MIL-E-19933E AMD1, MIL-316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e %C, %Cr, %Cu, %Mn, %Mo, %N, %Nb, %Ni, %P, %S, %Si, %Ti, Ferrite Number (Delong ©), Ferrite Number (WRC-1992 ©)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316 Requirement:\u003c\/strong\u003e 0.08 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L Requirement:\u003c\/strong\u003e 0.03 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical Result:\u003c\/strong\u003e 0.01-0.02, 18.2-18.8, 0.03-0.22, 1.7-2.0, 2.2-2.6, 0.03-0.04, 0.01-0.06, 11.6-12.4, 0.01-0.02, 0.02 max., 0.33-0.54, 0.00 max., 7-12, 7-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Diameter:\u003c\/strong\u003e 1\/16 in (1.6 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Package:\u003c\/strong\u003e (3) 10 lb Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (in):\u003c\/strong\u003e 1\/16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (in):\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ED034445\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 0015082563527\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eAWS ER316 Stainless TIG rod is used for GTAW (TIG) welding of stainless steel base metals. Match the filler alloy to the base material: ER308L for 304\/308 stainless, ER309L for dissimilar welds (stainless to carbon steel), ER316L for marine and chemical service, ER317L for higher corrosion resistance than 316L. Using the wrong filler can reduce corrosion resistance at the weld zone.\u003c\/p\u003e\n\u003ch3\u003eCompatibility \u0026amp; sizing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrode type: TIG Rod, Stainless Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy pros choose this\u003c\/h3\u003e\n\u003cp\u003eTIG (GTAW) filler rods give welders precise control over the weld pool because the filler is fed manually rather than carried in the arc. Choosing the correct alloy and diameter keeps weld chemistry, penetration, and bead appearance consistent across procedures.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e1 Year\u003c\/p\u003e\n\u003ch3\u003eFrom the manufacturer\u003c\/h3\u003e\n\u003cp\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/li\u003e\n\u003cli\u003eThe 2-3% molybdenum improves pitting corrosion resistance of the weld deposit\u003c\/li\u003e\n\u003cli\u003eMolybdenum grade increases corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUse for high temperature service applications\u003c\/li\u003e\n\u003cli\u003e0.03% carbon content increases resistance to intergranular corrosion\u003c\/li\u003e\n\u003cli\u003eInk jet printing identification on entire length of electrode\u003c\/li\u003e\n\u003cli\u003eQ2 Lot® - Certificate showing actual wire composition and calculated ferrite number (FN) available online\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"disclaimer\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Lincoln Electric","offers":[{"title":"Default Title","offer_id":43638140698775,"sku":"ED034445","price":176.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed034445-lincoln-er316316l-tig-gtaw-welding-rod-116-in-10-lb-tube-lincoln-electric.jpg?v=1746583536"},{"product_id":"lincoln-ed034446-lincoln-er316-316l-tig-gtaw-welding-rod-3-32-in-10-lb-tube","title":"ER316\/316L 3\/32\" Stainless TIG Welding Rod — 10 lb Tube | Lincoln","description":"\u003ch2\u003eLincoln Electric — Lincoln ED034446 Lincoln ER316\/316L TIG GTAW Welding Rod, 3\/32 in, 10 lb Tube\u003c\/h2\u003e\n\u003cp\u003eLINCOLN® ER316\/316L Tungsten Inert Gas Rod has 2-3% molybdenum for increased corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCONFORMANCES:\u003c\/strong\u003e SPECIFICATION, CLASSIFICATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eABS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCWB:\u003c\/strong\u003e CSA W48, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIL:\u003c\/strong\u003e MIL-E-19933E AMD1, MIL-316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e %C, %Cr, %Cu, %Mn, %Mo, %N, %Nb, %Ni, %P, %S, %Si, %Ti, Ferrite Number (Delong ©), Ferrite Number (WRC-1992 ©)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316 Requirement:\u003c\/strong\u003e 0.08 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L Requirement:\u003c\/strong\u003e 0.03 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical Result:\u003c\/strong\u003e 0.01-0.02, 18.2-18.8, 0.03-0.22, 1.7-2.0, 2.2-2.6, 0.03-0.04, 0.01-0.06, 11.6-12.4, 0.01-0.02, 0.02 max., 0.33-0.54, 0.00 max., 7-12, 7-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Diameter:\u003c\/strong\u003e 3\/32 in (2.4 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Package:\u003c\/strong\u003e (3) 10 lb Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (in):\u003c\/strong\u003e 3\/32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (in):\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ED034446\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 0015082563558\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eAWS ER316 Stainless TIG rod is used for GTAW (TIG) welding of stainless steel base metals. Match the filler alloy to the base material: ER308L for 304\/308 stainless, ER309L for dissimilar welds (stainless to carbon steel), ER316L for marine and chemical service, ER317L for higher corrosion resistance than 316L. Using the wrong filler can reduce corrosion resistance at the weld zone.\u003c\/p\u003e\n\u003ch3\u003eCompatibility \u0026amp; sizing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrode type: TIG Rod, Stainless Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy pros choose this\u003c\/h3\u003e\n\u003cp\u003eTIG (GTAW) filler rods give welders precise control over the weld pool because the filler is fed manually rather than carried in the arc. Choosing the correct alloy and diameter keeps weld chemistry, penetration, and bead appearance consistent across procedures.\u003c\/p\u003e\n\u003ch3\u003eFrom the manufacturer\u003c\/h3\u003e\n\u003cp\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/li\u003e\n\u003cli\u003eThe 2-3% molybdenum improves pitting corrosion resistance of the weld deposit\u003c\/li\u003e\n\u003cli\u003eMolybdenum grade increases corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUse for high temperature service applications\u003c\/li\u003e\n\u003cli\u003e0.03% carbon content increases resistance to intergranular corrosion\u003c\/li\u003e\n\u003cli\u003eInk jet printing identification on entire length of electrode\u003c\/li\u003e\n\u003cli\u003eQ2 Lot® - Certificate showing actual wire composition and calculated ferrite number (FN) available online\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"disclaimer\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Lincoln Electric","offers":[{"title":"Default Title","offer_id":43638140764311,"sku":"ED034446","price":171.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed034446-lincoln-er316316l-tig-gtaw-welding-rod-332-in-10-lb-tube-lincoln-electric.jpg?v=1746583538"},{"product_id":"lincoln-ed034447-lincoln-er316-316l-tig-gtaw-welding-rod-1-8-in-10-lb-tube","title":"Lincoln ED034447 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/8 in,  10 lb Tube","description":"\u003ch2\u003eLincoln Electric — Lincoln ED034447 Lincoln ER316\/316L TIG GTAW Welding Rod, 1\/8 in,  10 lb Tube\u003c\/h2\u003e\n\u003cp\u003eLINCOLN® ER316\/316L Tungsten Inert Gas Rod has 2-3% molybdenum for increased corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCONFORMANCES:\u003c\/strong\u003e SPECIFICATION, CLASSIFICATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eABS:\u003c\/strong\u003e AWS A5.9, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCWB:\u003c\/strong\u003e CSA W48, ER316, ER316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIL:\u003c\/strong\u003e MIL-E-19933E AMD1, MIL-316L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e %C, %Cr, %Cu, %Mn, %Mo, %N, %Nb, %Ni, %P, %S, %Si, %Ti, Ferrite Number (Delong ©), Ferrite Number (WRC-1992 ©)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316 Requirement:\u003c\/strong\u003e 0.08 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L Requirement:\u003c\/strong\u003e 0.03 max., 18.0 - 20.0, 0.75 max., 1.0 - 2.5, 2.0 - 3.0, Info. Only, Info. Only, 11.0 - 14.0, 0.03 max., 0.03 max., 0.30 - 0.65, Info. Only, Info. Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical Result:\u003c\/strong\u003e 0.01-0.02, 18.2-18.8, 0.03-0.22, 1.7-2.0, 2.2-2.6, 0.03-0.04, 0.01-0.06, 11.6-12.4, 0.01-0.02, 0.02 max., 0.33-0.54, 0.00 max., 7-12, 7-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Diameter:\u003c\/strong\u003e 1\/8 in (3.2 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLECO Package:\u003c\/strong\u003e (3) 10 lb Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (in):\u003c\/strong\u003e 1\/8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (in):\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ED034447\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 0015082563589\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eAWS ER316 Stainless TIG rod is used for GTAW (TIG) welding of stainless steel base metals. Match the filler alloy to the base material: ER308L for 304\/308 stainless, ER309L for dissimilar welds (stainless to carbon steel), ER316L for marine and chemical service, ER317L for higher corrosion resistance than 316L. Using the wrong filler can reduce corrosion resistance at the weld zone.\u003c\/p\u003e\n\u003ch3\u003eCompatibility \u0026amp; sizing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrode type: TIG Rod, Stainless Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy pros choose this\u003c\/h3\u003e\n\u003cp\u003eTIG (GTAW) filler rods give welders precise control over the weld pool because the filler is fed manually rather than carried in the arc. Choosing the correct alloy and diameter keeps weld chemistry, penetration, and bead appearance consistent across procedures.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e1 Year\u003c\/p\u003e\n\u003ch3\u003eFrom the manufacturer\u003c\/h3\u003e\n\u003cp\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLINCOLN® ER316\/316L provides improved pitting corrosion resistance due to the 2-3% molybdenum content, while the 0.03% maximum carbon content increases resistance to intergranular corrosion. Also used in high temperature service applications.\u003c\/li\u003e\n\u003cli\u003eThe 2-3% molybdenum improves pitting corrosion resistance of the weld deposit\u003c\/li\u003e\n\u003cli\u003eMolybdenum grade increases corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUse for high temperature service applications\u003c\/li\u003e\n\u003cli\u003e0.03% carbon content increases resistance to intergranular corrosion\u003c\/li\u003e\n\u003cli\u003eInk jet printing identification on entire length of electrode\u003c\/li\u003e\n\u003cli\u003eQ2 Lot® - Certificate showing actual wire composition and calculated ferrite number (FN) available online\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"disclaimer\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Lincoln Electric","offers":[{"title":"Default Title","offer_id":43638141714583,"sku":"ED034447","price":169.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed034447-lincoln-er316316l-tig-gtaw-welding-rod-18-in-10-lb-tube-lincoln-electric.jpg?v=1746583553"},{"product_id":"lincoln-ed036499-murex-316lsi-mig-gmaw-stainless-steel-welding-wire-0-030-in-45-33-lb-spool","title":"Lincoln ED036499 Murex 316LSi MIG GMAW Stainless Steel Welding Wire, 0.030 in, 45 33 lb Spool","description":"\u003ch2\u003eWhat Is Lincoln Murex 316LSi MIG GMAW Stainless Steel Welding Wire?\u003c\/h2\u003e\n\u003cp\u003eLincoln Electric ED036499 Murex 316LSi MIG GMAW Stainless Steel Welding Wire (0.030 in, 33 lb Spool) is a solid-wire GMAW filler metal classified under AWS A5.9 as ER316LSi. The MUREX® brand represents Lincoln Electric's European and international market premium stainless steel wire range, recognized in the offshore, petrochemical, and food-processing industries for consistent arc performance and tight compositional control. The \"LSi\" designation combines two enhancements: \"L\" (low carbon, maximum 0.03% C) to prevent sensitization, and \"Si\" (elevated silicon, 0.65–1.00%) to improve wettability, reduce surface tension of the molten puddle, and produce a smoother, more self-leveling bead profile with reduced spatter in both spray transfer and pulsed transfer modes.\u003c\/p\u003e\n\u003cp\u003eThe 0.030 in (0.76 mm) wire diameter is one of the finer diameters available for stainless MIG, designed specifically for welding light-gauge stainless steel sheet, thin-wall tubing, and precision instrumentation components where fine control of heat input is the priority. The 33 lb spool provides a practical production run for pipe shop and vessel fabrication operations where frequent spool changes interrupt workflow. The 2–3% molybdenum addition to the alloy provides enhanced pitting and crevice corrosion resistance in chloride environments — the defining advantage of 316\/316L over 304\/304L stainless.\u003c\/p\u003e\n\n\u003ch2\u003eAWS Classification, Specifications \u0026amp; Mechanical Properties\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS Classification:\u003c\/strong\u003e ER316LSi per AWS A5.9\/A5.9M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 0.03% max (L = low-carbon)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChromium:\u003c\/strong\u003e 17.0–20.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNickel:\u003c\/strong\u003e 11.0–14.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMolybdenum:\u003c\/strong\u003e 2.0–3.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon:\u003c\/strong\u003e 0.65–1.00% (elevated Si = improved wetting)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManganese:\u003c\/strong\u003e 1.0–2.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhosphorus:\u003c\/strong\u003e 0.03% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSulfur:\u003c\/strong\u003e 0.03% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 0.030 in (0.76 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 33 lb spool\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTensile Strength (as-welded):\u003c\/strong\u003e ≥80,000 psi (552 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYield Strength:\u003c\/strong\u003e ≥57,000 psi (393 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElongation:\u003c\/strong\u003e ≥25%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFerrite Number:\u003c\/strong\u003e 3–12 FN typical\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBest Applications for Murex 316LSi 0.030 in MIG Wire\u003c\/h2\u003e\n\u003cp\u003eThe combination of 316L corrosion protection, improved silicon fluidity, and fine 0.030 in wire diameter makes Murex 316LSi the precision choice for demanding stainless applications:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical and Biotech Clean Piping:\u003c\/strong\u003e ASME BPE-compliant piping and vessel fabrication in 316L stainless for high-purity injectable and biologics manufacturing. The 0.030 in wire with short-circuit or pulsed transfer produces full-penetration, sanitary root beads with smooth internal geometry meeting ASME SF-1 through SF-4 surface finish requirements. 316L molybdenum content satisfies FDA biocompatibility requirements for product-contact surfaces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine and Offshore Stainless Piping:\u003c\/strong\u003e 316L piping and valve connections in seawater service where the combination of molybdenum (pitting resistance) and the elevated-silicon bead profile (reduced crevice initiation sites) is specified in the project's corrosion engineering review.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood Processing and Beverage Equipment:\u003c\/strong\u003e Hygienic-grade heat exchangers, CIP (clean-in-place) piping systems, and product-contact tank shells in 316L stainless where chloride cleaning agents and acidic product streams demand molybdenum corrosion resistance beyond what 304L provides.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Process Instrumentation and Tube Work:\u003c\/strong\u003e Small-diameter 316L tubing, compression fittings, and manifold connections in instrumentation circuits for chemical plant process control. 0.030 in wire with short-circuit transfer enables full-penetration root pass welding on Schedule 5S and Schedule 10S thin-wall tubing without burn-through.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Sheet Metal Fabrication:\u003c\/strong\u003e 16 ga through 3\/16 in 316L stainless cabinet, enclosure, and equipment housing fabrication where the Si-enhanced bead profile reduces post-weld finishing labor compared to standard ER316L wire.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCryogenic Equipment:\u003c\/strong\u003e 316L stainless maintains excellent toughness at liquid nitrogen temperature (–320 °F \/ –196 °C) — Murex 316LSi 0.030 in is used for thin-wall LN₂ storage vessels, cryogenic transfer tubing, and cold box fabrication.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to MIG Weld with Murex 316LSi 0.030 in Wire — Settings, Gas \u0026amp; Technique\u003c\/h2\u003e\n\u003ch3\u003eTransfer Mode Selection for 0.030 in Stainless Wire\u003c\/h3\u003e\n\u003cp\u003eAt 0.030 in diameter, two transfer modes are practical:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShort-Circuit Transfer:\u003c\/strong\u003e 16–20 V \/ WFS 150–250 ipm — for light-gauge sheet (16 ga–12 ga), root pass on thin-wall pipe (\u0026lt;0.120 in wall), and all-position welding where spray transfer would provide too much heat input. Short-circuit with 0.030 in produces the cleanest root profile on thin-wall stainless tube.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpray Transfer:\u003c\/strong\u003e 23–27 V \/ WFS 250–350 ipm — for 3\/16 in and thicker flat\/horizontal stainless plate. Spray transfer with 0.030 in is achievable at lower amperages than with .035 or .045 in wire, providing spray-quality bead profile with less heat input — beneficial on 316L to control sensitization.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShielding Gas\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary:\u003c\/strong\u003e 98% Argon \/ 2% Oxygen at 25–40 CFH. Ar+2%O₂ is the optimal stainless MIG shielding gas for both transfer modes — oxygen stabilizes the spray arc and promotes wetting while minimizing chromium oxide tint on the bead surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlternative:\u003c\/strong\u003e 90% Ar \/ 10% CO₂ for short-circuit work on non-critical 316L joints. Higher CO₂ increases oxidation tint and heat input slightly, reducing weld surface quality for food-grade and pharmaceutical applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e 25–40 CFH for 0.030 in wire. Do not exceed 45 CFH — turbulent gas flow on small-bore tubing can cause air entrainment and contamination at the bead surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInterpass Temperature\u003c\/h3\u003e\n\u003cp\u003eMaximum 300 °F (149 °C). Monitor with a contact pyrometer between passes. Sensitization risk is real on 316L multi-pass welds even with low-carbon \"L\" grade filler — the interpass temperature limit is essential for maintaining corrosion resistance in the HAZ.\u003c\/p\u003e\n\n\u003ch2\u003eStorage and Handling of Lincoln Murex 316LSi MIG Wire\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eStore in original moisture-barrier foil packaging with desiccant. 316LSi stainless MIG wire oxidizes in humid environments — inspect before use for uniform bright-white\/silver surface free of yellow, bronze, or rust tinting.\u003c\/li\u003e\n  \u003cli\u003eOnce opened, place partially used spools in a sealed plastic bag with fresh desiccant or install in the wire feeder with the feeder cabinet door kept closed between shifts.\u003c\/li\u003e\n  \u003cli\u003ePurge 12–18 in of wire from the conduit tip before starting a new shift's first weld. Conduit lubricant that collects at the wire tip overnight causes initial porosity and black smut on the first weld.\u003c\/li\u003e\n  \u003cli\u003eNever use 316LSi spool wire on carbon steel — stainless wire in a carbon steel MIG weld produces a high-alloy deposit with unpredictable properties and wastes the high-cost stainless wire. Keep stainless spools physically segregated from carbon steel wire stores.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines and Base Metals\u003c\/h2\u003e\n\u003cp\u003eMurex 316LSi 0.030 in wire requires a wire feeder and power source capable of stable low-amperage short-circuit or spray transfer at this fine wire diameter. Recommended Lincoln Electric equipment:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLincoln Power MIG 210 MP and 215 MPi (precision short-circuit at low amperages for 0.030 in wire)\u003c\/li\u003e\n  \u003cli\u003eLincoln Power Wave S350 and S500 (pulsed spray for out-of-position 316L sheet work)\u003c\/li\u003e\n  \u003cli\u003eLincoln Invertec V350-Pro (stainless spray and pulsed transfer)\u003c\/li\u003e\n  \u003cli\u003eLincoln Magnum Pro 100L and 200 MIG guns (liners and tips in 0.030 in rated size)\u003c\/li\u003e\n  \u003cli\u003eLincoln Drive rolls rated 0.030 in — verify drive roll selection; V-groove knurled rolls are recommended for 0.030 in solid stainless wire to prevent wire deformation without excessive drive force.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary base metals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI 316 and 316L austenitic stainless (all product forms: sheet, plate, pipe, tube)\u003c\/li\u003e\n  \u003cli\u003eASTM A240 Grade 316\/316L\u003c\/li\u003e\n  \u003cli\u003eASTM A312 Type TP316\/316L pipe\u003c\/li\u003e\n  \u003cli\u003eASME SA-240 316\/316L pressure vessel service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary base metals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e321 stainless (Ti-stabilized, where 316LSi deposit is acceptable per engineering review)\u003c\/li\u003e\n  \u003cli\u003e317L stainless (higher Mo; 316LSi acceptable for repair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions — Lincoln Murex 316LSi MIG Wire (0.030 in)\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the difference between ER316L and ER316LSi welding wire?\u003c\/strong\u003e\u003cbr\u003e\nA: ER316L has standard silicon content (0.30–0.65%); ER316LSi increases silicon to 0.65–1.00%. Elevated silicon reduces surface tension of the molten stainless puddle, improving wettability, bead toe fusion, and reducing surface roughness. The visual result is a flatter, wider, more self-leveling bead profile with less spatter. Corrosion resistance, hydrogen classification, and mechanical properties are essentially identical. For code work, both are ER316L-class under AWS A5.9 (the Si variant is a sub-classification); verify that your WPS accepts ER316LSi if only ER316L is listed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Is 0.030 in wire diameter practical for MIG welding on anything thicker than 3\/16 in?\u003c\/strong\u003e\u003cbr\u003e\nA: 0.030 in wire can be used on material thicker than 3\/16 in in flat\/horizontal position with spray transfer, but productivity is limited — the 0.030 in wire simply deposits less metal per pass at its practical amperage ceiling (~250–280 A for spray). For 1\/4 in and thicker 316L plate in flat\/horizontal production, .035 in or .045 in wire provides significantly higher deposition rates and lower cost per pound of deposit. The 0.030 in wire's advantage is precision heat control and access to thin-gauge and tube work — reserve it for those applications rather than using it as an all-purpose stainless wire for heavy plate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Why use 316LSi instead of 316L TIG rod for stainless tube root passes?\u003c\/strong\u003e\u003cbr\u003e\nA: For the highest-quality root pass on pharmaceutical or food-grade pipe, 316L TIG rod with back-purge remains the gold standard — the clean, autogenous TIG root with back-purge is the only method that reliably produces an ASME BPE SF-1 level root bead. However, for production environments where TIG root speed is a bottleneck, 0.030 in 316LSi MIG with short-circuit transfer (or RMD\/CMT waveform-controlled transfer modes on Lincoln Power Wave) provides a viable alternative with adequate root quality for less-critical specifications (SF-2 and below), at significantly higher deposition rates than manual TIG root pass welding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What ferrite number should I expect in Murex 316LSi MIG welds?\u003c\/strong\u003e\u003cbr\u003e\nA: Murex 316LSi is formulated to deposit within the 3–12 FN range, satisfying AWS D1.6 and most pressure vessel code requirements for austenitic stainless weld deposits (minimum 3 FN for hot-crack resistance, maximum 15 FN to protect corrosion resistance and ductility). The actual FN of a specific deposit depends on dilution from the base metal — more dilution from a higher-alloy 316L base metal may reduce FN toward the lower end of the range. Measure FN with a calibrated Feritscope on completed welds if code compliance requires FN documentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Can I use 98% Ar \/ 2% O₂ shielding gas for both short-circuit and spray transfer with Murex 316LSi?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — Ar+2%O₂ is appropriate for both short-circuit (low-voltage) and spray transfer modes with ER316LSi. It is the most universal choice for stainless GMAW and produces the best combination of arc stability, bead appearance, and corrosion resistance across both transfer modes. Some welders prefer 100% Ar for short-circuit to reduce the heat input further (the O₂ addition adds a small amount of heat), but the difference is minor at 0.030 in wire at short-circuit parameters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: How do I avoid sensitization when making multi-pass welds with Murex 316LSi?\u003c\/strong\u003e\u003cbr\u003e\nA: Use the following controls: (1) monitor interpass temperature with a contact pyrometer — do not deposit the next pass until the base metal adjacent to the weld cools to ≤300 °F (149 °C); (2) use the lowest practical heat input (V × A × 60 \/ ipm) that still provides complete fusion; (3) deposit stringer beads rather than wide weave passes; (4) complete the weld promptly — avoid holding the assembly at temperature between shifts; (5) for critical pharmaceutical applications, solution anneal the completed weldment at 1,900–2,100 °F (1,038–1,149 °C) followed by rapid quench to fully dissolve any carbides that may have precipitated during fabrication.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: What contact tip and liner should I use for 0.030 in stainless MIG wire?\u003c\/strong\u003e\u003cbr\u003e\nA: Use a 0.030 in rated contact tip (Lincoln KP4738-035 or equivalent) in copper or chrome-zirconia material — chrome-zirconia tips last longer with stainless wire, which is harder than carbon steel wire and accelerates tip bore wear. The wire liner should be a steel or Teflon-lined conduit rated for 0.030 in wire — do not use a carbon steel liner sized for .035 or .045 in wire on 0.030 in wire, as the loose fit causes wire feed instability. Replace the liner when feed resistance increases or wire casting (natural curl) changes — a kinked or worn liner is the most common cause of inconsistent wire feed on fine-diameter stainless MIG wire.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between ER316L and ER316LSi welding wire?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER316L has standard silicon content (0.30–0.65%); ER316LSi increases silicon to 0.65–1.00%. Elevated silicon improves wettability, bead toe fusion, and reduces surface roughness — producing a flatter, more self-leveling bead with less spatter. Corrosion resistance and mechanical properties are essentially identical.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is 0.030 in wire practical for MIG welding on material thicker than 3\/16 in?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"0.030 in wire can be used on thicker material in flat\/horizontal position with spray transfer, but productivity is limited by the wire's practical amperage ceiling (~250–280 A). For 1\/4 in and thicker 316L plate, .035 or .045 in wire provides significantly higher deposition rates. Reserve 0.030 in for precision heat control on thin-gauge and tube work.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why use 316LSi MIG instead of 316L TIG rod for stainless tube root passes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For highest-quality pharmaceutical root passes, 316L TIG with back-purge remains the gold standard. However, 0.030 in 316LSi MIG with short-circuit transfer provides a viable alternative for less-critical specifications (SF-2 and below) at significantly higher deposition rates than manual TIG root pass welding.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What ferrite number should I expect in Murex 316LSi MIG welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Murex 316LSi is formulated to deposit within the 3–12 FN range, satisfying AWS D1.6 and most pressure vessel code requirements. The actual FN depends on dilution from the base metal. Measure FN with a calibrated Feritscope if code compliance requires FN documentation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use 98% Ar \/ 2% O₂ for both short-circuit and spray transfer with Murex 316LSi?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — Ar+2%O₂ is appropriate for both short-circuit and spray transfer modes with ER316LSi. It is the most universal choice for stainless GMAW and produces the best combination of arc stability, bead appearance, and corrosion resistance across both transfer modes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I avoid sensitization when making multi-pass welds with Murex 316LSi?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Key controls: (1) monitor interpass temperature — do not deposit the next pass until the base metal cools to ≤300 °F; (2) use the lowest practical heat input that provides complete fusion; (3) deposit stringer beads rather than wide weave passes; (4) for critical pharmaceutical applications, solution anneal at 1,900–2,100 °F followed by rapid quench.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What contact tip and liner should I use for 0.030 in stainless MIG wire?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use a 0.030 in rated contact tip in copper or chrome-zirconia material — chrome-zirconia lasts longer with harder stainless wire. Use a steel or Teflon-lined conduit rated for 0.030 in wire. Replace the liner when feed resistance increases — a worn liner is the most common cause of inconsistent wire feed on fine-diameter stainless MIG wire.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Lincoln Electric","offers":[{"title":"Default Title","offer_id":43639153590423,"sku":"ED036499","price":27211.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed036499-murex-316lsi-mig-gmaw-stainless-steel-welding-wire-0-030-in-33-lb-spool-lincoln-electric-1.jpg?v=1760719649"},{"product_id":"harris-316l-stainless-tig-gtaw-welding-rod-030-x-36-x-10-pkg-316lte0","title":"Harris 316L Stainless TIG GTAW Welding Rod .030 X 36 X 10# PKG - 316LTE0","description":"\u003ch2\u003eWhat Is Harris 316L Stainless TIG Welding Rod .030 in?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris 316L Stainless TIG GTAW Welding Rod\u003c\/strong\u003e (part number 316LTE0) is a fine-diameter, low-carbon, molybdenum-bearing austenitic stainless steel filler rod classified \u003cstrong\u003eER316L per AWS A5.9\/A5.9M\u003c\/strong\u003e. Available in a .030 in (0.76 mm) diameter, 36-inch cut length, 10 lb box, this rod is the correct filler for precision TIG welding of thin-gauge 316, 316L, and related molybdenum-bearing stainless steel components where maximum corrosion resistance in the weld zone is required. The combination of the fine .030 in diameter and ER316L's molybdenum-enhanced chemistry makes this rod uniquely suited for thin-wall 316L tubing (0.028–0.065 in), instrument fittings, hygienic tri-clamp assemblies, and ultra-high-purity semiconductor or pharmaceutical piping systems where both dimensional precision and pitting resistance at chloride-exposed welds are mandatory. Harris Products Group, a Lincoln Electric company, manufactures this rod with traceable lot chemistry documentation.\u003c\/p\u003e\n\u003cp\u003eAt .030 in, the rod delivers extremely fine bead control — the heat input per unit weld length is minimal, which is critical on thin-gauge 316L that distorts rapidly under excessive heat. In pulse TIG applications (common in high-purity piping orbital welding and manual precision work), the .030 in diameter complements low background-current pulse settings that minimize heat-affected zone width.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — ER316L Fine Diameter\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER316L (AWS A5.9\/A5.9M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003e316LTE0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e.030 in (0.76 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon Content (max)\u003c\/td\u003e\n\u003ctd\u003e0.03% (low-carbon L grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e18.0–20.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNickel Content\u003c\/td\u003e\n\u003ctd\u003e11.0–14.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMolybdenum\u003c\/td\u003e\n\u003ctd\u003e2.0–3.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥75,000 psi (517 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eYield Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥54,000 psi (372 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥35%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEN\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon or Ar\/He\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBase Metals\u003c\/td\u003e\n\u003ctd\u003e316, 316L, 316H, 317L stainless steels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for ER316L .030 in TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical High-Purity Piping:\u003c\/strong\u003e Sanitary tubing systems (BPE-compliant) in 316L stainless at wall thicknesses of 0.049–0.065 in are routinely TIG-welded with .030 in ER316L rod. The fine diameter and low-carbon chemistry are both required by pharmaceutical GMP facility specifications for potable water, WFI (Water for Injection), and process piping welds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSemiconductor Fab \u0026amp; Ultra-High-Purity Gas Systems:\u003c\/strong\u003e UHP gas delivery piping and panels for semiconductor fabrication use electropolished 316L tubing at very thin wall gauges. The .030 in rod is compatible with autogenous-root orbital TIG processes and manual fill passes on small-bore UHP components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThin-Wall Marine 316L Tube:\u003c\/strong\u003e Seawater cooling systems, outboard motor housings, and small-craft hardware using thin-gauge 316L tubing (16–22 gauge). The molybdenum in ER316L maintains corrosion resistance in the weld metal equal to or exceeding the base metal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Instrumentation:\u003c\/strong\u003e Thermowell assemblies, pressure transducer fittings, and analytical instrument sample lines in 316L require fine-diameter filler for small-bore tube butt and socket-weld joints with minimal weld crown height.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDecorative Marine Stainless:\u003c\/strong\u003e Handrail tubing, grab rails, and deck fittings in 316L on sailboats and powerboats; the .030 in diameter enables flush, smooth weld beads that polish out easily for a finished appearance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDairy \u0026amp; Beverage 3-A Sanitary Applications:\u003c\/strong\u003e 3-A Sanitary Standard piping in 316L — the low carbon and fine diameter .030 in rod supports the tight-radius small-bore tube work required in dairy plant connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris ER316L .030 in TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eWelding thin-gauge 316L with .030 in rod demands careful setup and technique to achieve porosity-free, sensitization-free welds with minimal distortion:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmperage:\u003c\/strong\u003e 20–75 amps DCEN for typical thin-gauge 316L applications (22 gauge–1\/16 in). Use a foot pedal — the narrow range between ideal fusion and burn-through on thin stainless requires constant modulation. For orbital welding programs using .030 in ER316L, program peak pulse current at 55–75% above background and 20–30% on-time at 1–3 Hz for travel-speed-modulated heat input.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTungsten:\u003c\/strong\u003e 1\/16 in 2% ceriated tungsten is ideal for .030 in filler work on thin stainless. Sharpen to a fine point (30° included angle). A 1\/16 in tungsten in a size #4 or #5 gas lens cup creates the correct shielding envelope for thin-gauge joint geometry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGas:\u003c\/strong\u003e 100% argon, 12–18 CFH, through a size 5–6 gas lens cup. For tubing applications with back-purge requirements, flow 3–6 CFH argon into the tube interior to prevent root-side oxidation during root fusion. In orbital TIG systems, the weld head purges both sides automatically.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eJoint Fit-Up:\u003c\/strong\u003e For .030 in diameter rod on thin-gauge material, joint fit-up tolerance is ±0.010 in gap maximum. Excessive gaps on thin material cause burn-through because there is insufficient base metal mass to absorb the required heat input. Tack every 1.5–2 in on runs of thin tube to control distortion.\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eWall Thickness\u003c\/th\u003e\n\u003cth\u003eAmperage Range\u003c\/th\u003e\n\u003cth\u003eTungsten\u003c\/th\u003e\n\u003cth\u003eAr Flow (CFH)\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e22 gauge (0.028 in)\u003c\/td\u003e\n\u003ctd\u003e15–30 A\u003c\/td\u003e\n\u003ctd\u003e1\/16 in ceriated\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e18 gauge (0.050 in)\u003c\/td\u003e\n\u003ctd\u003e30–50 A\u003c\/td\u003e\n\u003ctd\u003e1\/16 in ceriated\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e16 gauge (0.063 in)\u003c\/td\u003e\n\u003ctd\u003e45–65 A\u003c\/td\u003e\n\u003ctd\u003e1\/16 ceriated\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1\/16 in (0.062 in)\u003c\/td\u003e\n\u003ctd\u003e60–75 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e16–18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for Harris 316L .030 in TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDedicated Fine-Wire Storage:\u003c\/strong\u003e Store .030 in rods in the original sealed box, laid flat. The fine diameter is susceptible to kinking — do not store in containers that allow rods to shift and bend. Kinks cause arc wander and poor fusion at the bend point.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGloves Mandatory:\u003c\/strong\u003e At this fine diameter, skin oils from finger contact are more problematic per unit surface area than on larger-diameter rods. Always handle .030 in stainless TIG rod with clean nitrile gloves. For pharmaceutical-grade applications, use lint-free cleanroom gloves.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertificate of Conformance:\u003c\/strong\u003e For pharmaceutical, semiconductor, or ASME pressure piping applications, retain the C\/C with the heat chemistry data. Some FDA-regulated facilities require the C\/C to be attached to the weld traveler for the specific spool of tubing welded.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpened Box:\u003c\/strong\u003e After opening, seal box with tape to prevent moisture ingress. At the .030 in diameter, even minor surface oxidation affects arc starts. Use within a reasonable period in normal shop conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Mixing of Diameters:\u003c\/strong\u003e Label opened boxes clearly with diameter and classification. At .030 in, the rod is difficult to distinguish visually from .035 in ER308L rods in the same box. A chemistry mismatch between 316L and 308L in a chloride environment could cause in-service pitting failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals for 316L .030 in TIG Rod\u003c\/h2\u003e\n\u003cp\u003eThe .030 in diameter requires a TIG machine capable of low-amperage stable arc starts (below 30 A):\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200 (K5126-1):\u003c\/strong\u003e Excellent for the .030 in rod on thin-gauge 316L work; its high-frequency start system provides clean arc initiation at very low amperage settings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAny Orbital TIG Welding System:\u003c\/strong\u003e Automated orbital TIG heads (Arc Machines, Orbimatic, Polysoude) designed for small-bore sanitary tubing use .030 in ER316L as standard fill wire in the hot-wire or cold-wire feed module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAny DC GTAW machine with foot-pedal control and HF start:\u003c\/strong\u003e The rod's fine diameter is compatible with any standard GTAW power source that can be controlled at 20–75 A with precision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003eER316L .030 Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e316 \/ 316L (thin gauge)\u003c\/td\u003e\n\u003ctd\u003e✅ Primary — ideal match\u003c\/td\u003e\n\u003ctd\u003eStandard selection for thin 316L sheet, tube, and instrumentation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e316H\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable (non-high-temp)\u003c\/td\u003e\n\u003ctd\u003eFor above 800°F service, consult engineer for ER316H or 317L\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e317L\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eER317L preferred for direct match; ER316L acceptable general service\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e304L \/ 304 (thin gauge)\u003c\/td\u003e\n\u003ctd\u003e✅ Over-alloyed, acceptable\u003c\/td\u003e\n\u003ctd\u003eAdds corrosion margin; more expensive than ER308L for same base metal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon steel\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eUse ER309L for dissimilar carbon-to-stainless joints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\n\u003ch2\u003eTechnical Notes — Harris ER316L .030 in TIG Rod for Thin-Gauge \u0026amp; Precision Applications\u003c\/h2\u003e\n\u003cp\u003eThe 0.030 in (0.76 mm) diameter ER316L rod fills a specific gap in the TIG rod size range. Understanding when to specify this diameter over the standard 3\/32 in (2.38 mm) size is critical for thin-gauge 316L work.\u003c\/p\u003e\n\u003ch3\u003e0.030 in vs 3\/32 in — Diameter Selection Guide\u003c\/h3\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003e0.030 in ER316L\u003c\/th\u003e\n\u003cth\u003e3\/32 in ER316L\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBest thickness range\u003c\/td\u003e\n\u003ctd\u003e22–18 gauge (0.030–0.050 in)\u003c\/td\u003e\n\u003ctd\u003e16–10 gauge (0.060–0.135 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAmperage range\u003c\/td\u003e\n\u003ctd\u003e15–60 A\u003c\/td\u003e\n\u003ctd\u003e60–160 A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePrimary applications\u003c\/td\u003e\n\u003ctd\u003eThin sheet, small-bore tube, orbital TIG\u003c\/td\u003e\n\u003ctd\u003eProduction pipe, plate fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHeat input per dip\u003c\/td\u003e\n\u003ctd\u003eVery low — ideal for thin stainless\u003c\/td\u003e\n\u003ctd\u003eStandard production rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePharmaceutical \u0026amp; Sanitary Tubing Applications\u003c\/h3\u003e\n\u003cp\u003eThe 0.030 in diameter ER316L rod is the standard choice for orbital TIG welding of sanitary-grade 316L tubing (ASTM A270 \/ A269) in pharmaceutical, biotech, and food-grade piping systems. Typical tubing ODs range from 0.5 in to 2.0 in with wall thicknesses of 0.020–0.065 in. For wall thicknesses below 0.065 in, the 0.030 in filler rod provides better control of filler addition volume per unit length than the larger 3\/32 in rod — critical for consistent, smooth, ID-flush weld beads required by 3-A Sanitary Standards and FDA validation protocols.\u003c\/p\u003e\n\u003ch3\u003eER316L Corrosion Resistance in Sanitary Applications\u003c\/h3\u003e\n\u003cp\u003eIn pharmaceutical and food piping, ER316L TIG welds must meet EP (Electropolished) or mechanical polish surface finish requirements. The Mo content in ER316L deposit provides consistent corrosion resistance after electropolishing — the Mo-bearing passive film is more uniform and complete than 304L\/ER308L deposits after electropolishing, important for maintaining CIP (Clean-In-Place) and SIP (Steam-In-Place) system integrity. Post-weld electropolishing to Ra ≤0.5 μm (20 μin) is standard for pharmaceutical ER316L weld deposits.\u003c\/p\u003e\n\u003ch3\u003eOrbital Welding System Compatibility\u003c\/h3\u003e\n\u003cp\u003eHarris ER316L 0.030 in rod is compatible with cold wire feed orbital welding systems (Arc Machines, Polysoude, Orbitalum) used in pharmaceutical and semiconductor facility construction. The consistent diameter tolerance and surface cleanliness of Harris rod is important for reliable wire feed performance in automated orbital systems.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs — Harris ER316L .030 in Stainless TIG Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Why does my application call for .030 in rather than 1\/16 in diameter 316L rod?\u003c\/strong\u003e\u003cbr\u003eApplications requiring .030 in diameter are typically those with thin base metal (below 0.065 in), very narrow joint geometry, orbital TIG welding head restrictions, or specifications requiring minimum heat input and weld bead crown height. Pharmaceutical and semiconductor facilities often specify .030 in to reduce the total heat input per linear inch of weld and minimize the HAZ width on precision fittings and tubing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I use .030 in ER316L in an orbital welding machine?\u003c\/strong\u003e\u003cbr\u003eYes. .030 in is a standard fill-wire diameter for many orbital TIG systems. The wire is fed continuously from a spool or pack in the hot-wire or cold-wire feed module. Verify that your orbital head and feed mechanism are set up for the .030 in diameter (correct wire guide and drive roll V-groove size for the diameter).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What is the minimum material thickness I can weld with .030 in ER316L rod?\u003c\/strong\u003e\u003cbr\u003eThe .030 in rod is suitable for material thicknesses as thin as 22 gauge (0.028 in) when using a foot pedal at 15–25 A with proper technique. For material thinner than 22 gauge, an autogenous (no filler added) root pass or orbital autogenous weld may be preferred, with .030 in filler added only to fill the cap if needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Is ER316L .030 in stainless TIG rod suitable for food-grade applications?\u003c\/strong\u003e\u003cbr\u003eYes. Harris ER316L meets AWS A5.9\/A5.9M and is suitable for 3-A Sanitary Standard and FDA-regulated food contact equipment when welded with proper technique (full penetration, no lack of fusion, polished or passivated as required). Confirm the project specification and the local jurisdiction's requirements for filler metal documentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What causes porosity when welding with .030 in 316L rod?\u003c\/strong\u003e\u003cbr\u003eCommon causes at this diameter: (1) moisture or oil on the rod surface — use clean gloves and store correctly, (2) insufficient back-purge on tubing root passes — increase argon purge flow, (3) arc length too long — the fine diameter is more sensitive to arc length than thicker rods; maintain 1\/16 in or less arc length, (4) draft in weld area disrupting shielding — shield work area from air movement, (5) argon flow too low for the cup size — increase to recommended CFH.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: How long does a 10 lb box of .030 in ER316L TIG rod last?\u003c\/strong\u003e\u003cbr\u003eA 10 lb box contains approximately 600–700 individual 36 in rods at this diameter. For production pharmaceutical piping where a skilled welder might consume 30–50 rods per day on small-bore tube work, a 10 lb box represents roughly 2–3 weeks of full production work. For occasional maintenance or repair work, a 10 lb box may last many months.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: Does ER316L .030 in require a post-weld passivation treatment?\u003c\/strong\u003e\u003cbr\u003ePost-weld passivation (citric acid or nitric acid per ASTM A967) is required by some specifications for pharmaceutical, food-grade, and marine applications to remove the heat-affected zone iron contamination and restore the chromium-oxide passive layer. Passivation is specified at the engineering\/design level, not dependent on the filler rod. The choice of ER316L over ER308L ensures the weld metal will have similar passivation response to the 316L base metal.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does my application call for .030 in rather than 1\/16 in diameter 316L rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Applications requiring .030 in diameter typically involve thin base metal below 0.065 in, very narrow joint geometry, orbital TIG head restrictions, or specifications requiring minimum heat input. Pharmaceutical and semiconductor facilities specify .030 in to reduce heat input per weld inch and minimize the HAZ width on precision fittings and tubing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use .030 in ER316L in an orbital welding machine?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, .030 in is a standard fill-wire diameter for orbital TIG systems. Verify that the orbital head and feed mechanism are set up for .030 in diameter with correct wire guide and V-groove drive rolls.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the minimum material thickness I can weld with .030 in ER316L rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The .030 in rod is suitable for material as thin as 22 gauge (0.028 in) when using a foot pedal at 15-25 A. For material thinner than 22 gauge, an autogenous root pass may be preferred with .030 in filler added only to fill the cap.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is ER316L .030 in stainless TIG rod suitable for food-grade applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Harris ER316L meets AWS A5.9\/A5.9M and is suitable for 3-A Sanitary Standard and FDA-regulated food contact equipment when welded with proper technique including full penetration, no lack of fusion, and passivation as required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What causes porosity when welding with .030 in 316L rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Common causes: moisture or oil on the rod surface, insufficient back-purge on tubing root passes, arc length too long, drafts disrupting shielding, and argon flow too low for the cup size. Use clean gloves, maintain short arc length, and shield the work area.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How long does a 10 lb box of .030 in ER316L TIG rod last?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 10 lb box contains approximately 600-700 individual 36 in rods. For production pharmaceutical piping consuming 30-50 rods per day on small-bore tube work, a 10 lb box represents roughly 2-3 weeks of full production work.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does ER316L .030 in require post-weld passivation treatment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Post-weld passivation is required by some specifications for pharmaceutical, food-grade, and marine applications per ASTM A967 to restore the chromium-oxide passive layer. The choice of ER316L ensures weld metal has similar passivation response to 316L base metal.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258826420375,"sku":"316LTE0","price":309.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-316l-stainless-tig-gtaw-welding-rod-030-x-36-x-10-pkg-316lte0-harris-1.jpg?v=1753396983"},{"product_id":"harris-4130-chrome-moly-tig-gtaw-welding-rod-3-32-36in-10lb-box-0413050","title":"Harris 4130 Chrome-Moly TIG GTAW Welding Rod 3\/32 36in 10LB Box - 0413050","description":"\u003ch2\u003eWhat Is Harris 4130 Chrome-Moly TIG Welding Rod?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris 4130 Chrome-Moly TIG Welding Rod\u003c\/strong\u003e (part number 0413050) is a low-alloy chromium-molybdenum filler metal classified per \u003cstrong\u003eAWS A5.28 as ER80S-D2\u003c\/strong\u003e and commonly designated as 4130 chrome-moly rod in the welding industry. Available in a 3\/32 in (2.38 mm) diameter, 36-inch cut length, 10 lb box, this rod is designed specifically for gas tungsten arc welding (GTAW\/TIG) of 4130 chromoly steel, 4140 chrome-moly, and similar low-alloy high-strength chromium-molybdenum steels. Harris Products Group, a Lincoln Electric company, manufactures this ER80S-D2 \/ 4130-equivalent rod to meet the demanding requirements of aerospace structural welding, motorsport roll cage fabrication, oil \u0026amp; gas pressure piping, and high-performance bicycle frame welding — applications where the combination of high tensile strength, toughness, and heat-treat response of the chrome-moly base metal must be preserved in the weld deposit.\u003c\/p\u003e\n\u003cp\u003eChrome-moly (4130\/4140) steels are hardenable alloys containing 0.80–1.10% chromium and 0.15–0.25% molybdenum. These elements significantly increase hardenability and elevated-temperature strength but also raise the carbon equivalent (CE), requiring preheat for most weld thicknesses above 0.060 in and post-weld heat treatment (PWHT) for many structural and pressure applications. Harris 4130 TIG rod provides matching chemistry to the base metal — ensuring the weld zone achieves comparable mechanical properties to the parent material after proper heat treatment.\u003c\/p\u003e\n\u003cp\u003eThe 3\/32 in diameter is the primary production size for 4130 tubing and plate in the 0.090–0.250 in wall thickness range, covering the majority of motorsport, aerospace structural, and general engineering applications of chrome-moly steel.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — 4130 Chrome-Moly TIG Rod\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER80S-D2 \/ 4130 (AWS A5.28)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003e0413050\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3\/32 in (2.38 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eChromium (Cr)\u003c\/td\u003e\n\u003ctd\u003e0.90–1.20%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e0.40–0.65%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon (C)\u003c\/td\u003e\n\u003ctd\u003e0.07–0.12%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.40–0.70%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon (Si)\u003c\/td\u003e\n\u003ctd\u003e0.20–0.35%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhosphorus (max)\u003c\/td\u003e\n\u003ctd\u003e0.025%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSulfur (max)\u003c\/td\u003e\n\u003ctd\u003e0.025%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥80,000 psi (552 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (stress-relieved)\u003c\/td\u003e\n\u003ctd\u003e85,000–105,000 psi typical\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eYield Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥68,000 psi (469 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥20%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEN (DC electrode negative)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon (required)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBase Metals\u003c\/td\u003e\n\u003ctd\u003eAISI 4130, 4140, 4340, 8630, T-1 steel, similar low-alloy Cr-Mo steels\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePreheat Requirement\u003c\/td\u003e\n\u003ctd\u003e300–400°F (150–204°C) for most structural applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for 4130 Chrome-Moly TIG Welding Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotorsport Roll Cages \u0026amp; Chassis Fabrication:\u003c\/strong\u003e 4130 chromoly steel tubing (1.625×0.120 in, 1.75×0.095 in, 2.0×0.120 in) is the dominant material for NASCAR, NHRA, SCCA, and road course roll cages and chassis rails. Harris 4130 TIG rod is the correct filler for all cage and chassis TIG joints — correct Cr-Mo chemistry preserves the tube's strength and satisfies sanctioning body certifications (SFI 25.1, FIA 8862) that require matching filler metal. TIG's precise heat control on thin-wall tube (0.065–0.125 in) prevents burn-through and produces the tight, consistent bead geometry required for visual inspection and certifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAerospace Structural Welding:\u003c\/strong\u003e 4130 and 4340 chrome-moly steel is used in aircraft landing gear components, engine mount structures, airframe fittings, and flight control hardware. AWS D1.2 and military specifications (MIL-W-6858) require matching or approved filler metal for 4130 CrMo structural assemblies. Harris 4130 rod is used by MRO facilities, kit plane builders (Experimental Amateur Built — EAB), and defense sub-tier suppliers for these applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Performance Bicycle Frames:\u003c\/strong\u003e 4130 chromoly tubing has been the premium bicycle frame material for decades — mountain bike, road, BMX, and cyclocross frames in Cr-Mo specification (Reynolds 520, 525, 631, True Temper OX Platinum) require TIG welding with matching 4130-chemistry filler. Harris 4130 rod produces tight, neat TIG beads on bicycle tube joints (0.035–0.065 in wall) with proper preheat (150–200°F) and minimal distortion when technique is correct.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil \u0026amp; Gas Pressure Piping:\u003c\/strong\u003e P-No. 4 and P-No. 5 chrome-moly alloy steels are used extensively in refinery and petrochemical piping for elevated temperature service. 1.25Cr-0.5Mo (P11), 2.25Cr-1Mo (P22), and 5Cr-0.5Mo (P5) grades require low-alloy matching filler metals. While dedicated P11\/P22-grade rods are specified for ASME piping code work, Harris 4130 rod is used for some P-No. 4 applications in plant maintenance and non-code fabrication involving 4130\/4140 alloy steel components and chrome-moly fittings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary \u0026amp; Defense Fabrication:\u003c\/strong\u003e 4130 and 4340 chrome-moly steel is used in vehicle armor brackets, weapons mount frames, and tactical vehicle structural weldments where MIL-SPEC welding procedures require Cr-Mo matching filler. Harris 4130 rod is approved for use in these applications under applicable welding procedure qualifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAgricultural \u0026amp; Industrial Equipment Repair:\u003c\/strong\u003e Chrome-moly alloy steel is used in tractor hitch components, hydraulic cylinder barrels, and high-strength machinery components. Repair welding with Harris 4130 rod restores mechanical properties when proper preheat and stress-relief are applied — often superior to using plain ER70S-6 filler on chrome-moly base metal, which creates a soft, undermatched heat-affected zone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris 4130 Chrome-Moly TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eChrome-moly TIG welding is technically demanding — preheat, interpass temperature control, and post-weld handling are as important as welding parameters for achieving proper mechanical properties and avoiding hydrogen-induced cracking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePolarity — DCEN:\u003c\/strong\u003e DC electrode negative is mandatory for GTAW on chrome-moly steel. DCEN provides focused arc energy at the workpiece, good penetration on thin-wall tube, and keeps the tungsten cool. Never use AC on chrome-moly TIG work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShielding Gas — 100% Argon:\u003c\/strong\u003e Pure argon is required for 4130 chrome-moly TIG welding. Do not use CO₂-containing mixtures or tri-mix blends — CO₂ and oxygen-bearing shielding gases cause CO₂ to react with the chrome and molybdenum in the weld pool, producing oxidation products (chromium oxide) that reduce corrosion resistance and contaminate the deposit. 100% argon at 15–20 CFH with a gas lens cup assembly is strongly recommended for chrome-moly work to provide laminar flow and clean shielding.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePreheat — Required:\u003c\/strong\u003e Chrome-moly steels require preheat to prevent hydrogen-induced cold cracking (HICC) and avoid rapid quench hardening of the heat-affected zone. Without preheat, the rapidly quenched HAZ becomes a brittle martensite structure prone to cracking hours or days after welding (delayed cracking). The following minimum preheat temperatures apply:\u003c\/p\u003e\n\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eApplication \/ Thickness\u003c\/th\u003e\n\u003cth\u003eMin Preheat\u003c\/th\u003e\n\u003cth\u003eMax Interpass\u003c\/th\u003e\n\u003cth\u003ePWHT Recommendation\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRace cage tube ≤ 0.120 in wall\u003c\/td\u003e\n\u003ctd\u003e150–200°F (65–93°C)\u003c\/td\u003e\n\u003ctd\u003e400°F (204°C)\u003c\/td\u003e\n\u003ctd\u003eNot typically required for thin-wall cage\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePlate \/ tube 0.125–0.250 in\u003c\/td\u003e\n\u003ctd\u003e300°F (149°C)\u003c\/td\u003e\n\u003ctd\u003e400°F (204°C)\u003c\/td\u003e\n\u003ctd\u003eStress relief at 1100–1200°F if structural\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePlate \/ fitting \u0026gt; 0.250 in\u003c\/td\u003e\n\u003ctd\u003e400°F (204°C)\u003c\/td\u003e\n\u003ctd\u003e500°F (260°C)\u003c\/td\u003e\n\u003ctd\u003eNormalize or anneal at 1550–1650°F for full property restore\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAerospace structural (4130\/4340)\u003c\/td\u003e\n\u003ctd\u003e300–400°F (149–204°C)\u003c\/td\u003e\n\u003ctd\u003e400°F (204°C)\u003c\/td\u003e\n\u003ctd\u003eStress relief at 1025°F (551°C) or full H\/T to drawing requirement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaterial \/ Thickness\u003c\/th\u003e\n\u003cth\u003eAmperage (DCEN)\u003c\/th\u003e\n\u003cth\u003eTravel Speed\u003c\/th\u003e\n\u003cth\u003eAr Flow CFH\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e4130 tube 0.065 in wall\u003c\/td\u003e\n\u003ctd\u003e50–75 A\u003c\/td\u003e\n\u003ctd\u003e5–8 in\/min\u003c\/td\u003e\n\u003ctd\u003e15–18\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e4130 tube 0.095 in wall\u003c\/td\u003e\n\u003ctd\u003e75–105 A\u003c\/td\u003e\n\u003ctd\u003e4–6 in\/min\u003c\/td\u003e\n\u003ctd\u003e15–18\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e4130 tube 0.120 in wall\u003c\/td\u003e\n\u003ctd\u003e90–130 A\u003c\/td\u003e\n\u003ctd\u003e4–6 in\/min\u003c\/td\u003e\n\u003ctd\u003e18–20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e4130 plate 3\/16 in\u003c\/td\u003e\n\u003ctd\u003e130–170 A\u003c\/td\u003e\n\u003ctd\u003e4–5 in\/min\u003c\/td\u003e\n\u003ctd\u003e18–20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e4130 plate 1\/4 in\u003c\/td\u003e\n\u003ctd\u003e160–200 A\u003c\/td\u003e\n\u003ctd\u003e3–5 in\/min\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eTungsten:\u003c\/strong\u003e 3\/32 in 2% ceriated or 2% lanthanated tungsten sharpened to a 15–30° included angle point. For thin-wall tube work below 75 A, a 1\/16 in tungsten may be used. Keep the tungsten extremely clean — chrome-moly work requires pristine tungsten for arc stability. Any contamination (tungsten touching the rod or puddle) requires grinding the tungsten tip back immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePost-Weld Handling:\u003c\/strong\u003e Do not quench chrome-moly weldments with water or compressed air. After welding, wrap the weldment in ceramic fiber blanket or use a furnace to slow-cool from preheat temperature. Rapid cooling from even 300°F can produce a hard, brittle HAZ on 4130 above 0.120 in wall. For motorsport cages, slow air cooling (no quench) from preheat temperature is typically sufficient. For pressure applications, consult ASME IX or AWS D10.8 for specific PWHT cycles.\u003c\/p\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for 4130 Chrome-Moly TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMoisture-Free Storage:\u003c\/strong\u003e Chrome-moly TIG rod must be stored dry and free from moisture at all times. Even trace moisture on the rod surface introduces hydrogen into the weld pool during GTAW, promoting hydrogen-induced cold cracking in the high-hardenability 4130\/4140 HAZ. Store in the original sealed Harris box in a dry, climate-controlled location (below 50% RH, 60–80°F). If rods have been exposed to humidity, dry at 250°F (121°C) for 2 hours before use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKeep Rods Capped:\u003c\/strong\u003e When not actively welding, replace the end cap on the rod box. Even short exposure to humid shop air (especially near water-cooled equipment, compressed air condensate, or open doors in humid weather) can deposit enough moisture on the rod surface to cause weld quality issues on chrome-moly work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Surface Rust:\u003c\/strong\u003e Inspect rods before use — any rust or corrosion on the rod surface must result in rejection. Unlike ER70S-6 mild steel rod (which has a copper coating), 4130 chrome-moly rod has no protective coating and will develop rust in humid environments. Rusty rods introduce iron oxide and hydrogen and must be discarded for code or structural work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeparate from Other Alloys:\u003c\/strong\u003e Store 4130 chrome-moly rods separately from stainless TIG rods, mild steel ER70S-6, and aluminum rods. Accidental use of wrong filler metal on chrome-moly joints creates a seriously undermatched or incompatible weld — always check the rod label and box before welding. Use dedicated rod caddies or labeled storage tubes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Control:\u003c\/strong\u003e If rods have been stored in cold conditions (below 40°F), allow them to return to room temperature before use. Condensation on cold rod surfaces during welding adds significant hydrogen to the weld pool. Give cold rods at least 2 hours at shop temperature before use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvoid Contamination:\u003c\/strong\u003e Keep 4130 rods free from oil, grease, cutting fluid, and drawing lubricants. Any hydrocarbon contamination on the rod surface will decompose during welding, introducing carbon and hydrogen. Wipe rods with clean acetone-moistened cloth if contaminated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals for 4130 Chrome-Moly TIG Rod\u003c\/h2\u003e\n\u003cp\u003eHarris 4130 chrome-moly TIG rod is compatible with any DC-capable GTAW machine. Precision low-end amperage control (50–80 A range for thin-wall tube) is important — machines with good amperage stability at low settings are preferred for motorsport and aerospace tube work:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200:\u003c\/strong\u003e Full AC\/DC machine with excellent DC stability at low amperages. The Square Wave TIG 200's arc force control and smooth arc starts make it an excellent choice for 4130 cage tube work at 60–120 A. Widely used in motorsport chassis shops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Precision TIG 275:\u003c\/strong\u003e High-capacity DC\/AC machine with precision low-amperage control, suitable for aerospace structural 4130 work at 50–250 A. The Precision TIG series offers panel-level current control precision ideal for tube and thin-plate chrome-moly welding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Invertec V155-S:\u003c\/strong\u003e Lightweight, portable DC-only TIG\/SMAW machine. Suitable for 4130 field repair and motorsport shop work where portability is valued. Good 50–155 A DC range covers the full 4130 tube thickness range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Aspect 230 AC\/DC TIG:\u003c\/strong\u003e Entry-level AC\/DC inverter with DC mode for chrome-moly TIG. Suitable for light motorsport and bicycle frame work. Frequency and balance adjustments are AC-specific and not used for chrome-moly work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003e4130 Chrome-Moly Rod Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 4130 chromoly steel tube\/plate\u003c\/td\u003e\n\u003ctd\u003e✅ Primary \/ Matching\u003c\/td\u003e\n\u003ctd\u003eCorrect Cr-Mo matching filler; standard motorsport and aerospace choice\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 4140 chromoly steel\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eHigher hardenability — increase preheat to 400–450°F; PWHT required for structural\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 4340 chrome-moly-nickel steel\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable (with WPS)\u003c\/td\u003e\n\u003ctd\u003eHigher alloy; confirm WPS — dedicated ER80S-Ni2 filler sometimes preferred\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 8630 \/ 8640 steel\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eNickel-chrome-moly variants; 4130 filler provides adequate strength with preheat\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eT-1 (ASTM A514) high-strength steel\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable (with WPS)\u003c\/td\u003e\n\u003ctd\u003eQuenched and tempered plate; 4130 filler can be used — verify minimum strength per AWS D1.1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e4130 to mild steel (A36\/1018)\u003c\/td\u003e\n\u003ctd\u003e✅ Dissimilar — acceptable\u003c\/td\u003e\n\u003ctd\u003e4130 filler on 4130-to-mild joints; mild steel side does not require Cr-Mo filler but 4130 is acceptable\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eNever use 4130 filler on stainless — use ER308L, ER316L, or ER309L\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eNever use steel filler on aluminum — use ER4043 or ER5356\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCast iron\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eUse ENi-CI or ENiFe-CI nickel alloy filler for cast iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\n\u003ch2\u003eTechnical Reference — 4130 Chrome-Moly TIG Rod: Motorsport Certification, AWS Standards \u0026amp; Weld Metallurgy\u003c\/h2\u003e\n\u003cp\u003eHarris 4130 chrome-moly TIG rod (ER80S-D2) serves one of the most technically demanding niches in welding: safety-critical structural joints in motorsport, aerospace, and pressure applications where weld chemistry, mechanical properties, and procedure compliance are documented and verified.\u003c\/p\u003e\n\u003ch3\u003eMotorsport Sanctioning Body Requirements\u003c\/h3\u003e\n\u003cp\u003eMajor motorsport sanctioning bodies require matching or equivalent Cr-Mo filler for 4130 chromoly roll cage and chassis construction:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSFI Specification 25.1 (Roll Cages):\u003c\/strong\u003e Requires welding procedure qualification and filler metal documentation for certified roll cage construction. ER80S-D2 \/ 4130 rod is the standard documented filler in SFI-qualified cage procedures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNASCAR Rulebook:\u003c\/strong\u003e Chassis tube specifications require 4130 CrMo material with matching CrMo filler metal (ER80S-D2 or equivalent) for primary roll hoop and door bar construction.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSCCA GT and Touring Classes:\u003c\/strong\u003e GCR (General Competition Rules) requires roll bar construction with materials and filler metals meeting minimum mechanical property specifications that ER70S-6 does not satisfy on 4130 base metal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNHRA Safety Specifications:\u003c\/strong\u003e Front and rear hoop bars in NHRA-certified dragsters require 4130 material and matching filler documentation in submitted cage certifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHydrogen-Induced Cracking — The Primary Failure Mode\u003c\/h3\u003e\n\u003cp\u003eThe most dangerous failure mode in 4130 chrome-moly TIG welding is hydrogen-induced cold cracking (HICC), also called delayed cracking or underbead cracking. Understanding HICC prevents catastrophic failures in roll cages and pressure components:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMechanism:\u003c\/strong\u003e Atomic hydrogen generated during welding (from moisture in filler rod, ambient humidity, or contaminated base metal) diffuses into the austenite of the weld metal and HAZ at welding temperatures. As the weld cools below ~200°F, the austenite transforms to martensite — a high-hardness, brittle structure in the HAZ of 4130. Atomic hydrogen trapped in this martensitic structure applies internal stress that can fracture the HAZ days or weeks after welding, without any visible sign during post-weld visual inspection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrevention:\u003c\/strong\u003e (1) Dry filler rod — no moisture; (2) Clean base metal — no oil, rust, or oxides; (3) Preheat as specified — slows cooling rate through martensite transformation, allows hydrogen to diffuse out; (4) Slow post-weld cooling — no quenching, wrap in blanket.\u003c\/p\u003e\n\u003ch3\u003eHeat Treatment Response of ER80S-D2 Deposits\u003c\/h3\u003e\n\u003cp\u003eA major technical advantage of Harris 4130 \/ ER80S-D2 over ER70S-6 is heat treatability:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnnealed:\u003c\/strong\u003e 80,000–90,000 psi tensile, 60,000 psi yield, 22% elongation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormalized + tempered at 1200°F:\u003c\/strong\u003e 90,000–105,000 psi tensile, 75,000 psi yield, 20% elongation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuenched and tempered at 400°F:\u003c\/strong\u003e 150,000–180,000 psi tensile, 130,000–160,000 psi yield, 14% elongation (very high strength, reduced ductility)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eER70S-6 weld metal does not respond to heat treatment — its mechanical properties are fixed at the as-welded condition (70,000 psi tensile). For aerospace and racing applications where the weldment undergoes post-weld heat treatment, ER80S-D2 matching filler is essential to achieve the design tensile strength after heat treatment.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs — Harris 4130 Chrome-Moly TIG Welding Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What AWS classification is Harris 4130 chrome-moly TIG rod?\u003c\/strong\u003e\u003cbr\u003eHarris 4130 TIG rod is classified as \u003cstrong\u003eER80S-D2\u003c\/strong\u003e per AWS A5.28 (Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding). The \"4130\" designation used in the Harris part number and common trade name reflects the AISI steel chemistry designation (0.30% carbon, 1.0% chromium, 0.25% molybdenum), which closely matches the ER80S-D2 chemistry. In practice, AWS A5.28 ER80S-D2 and \"4130 rod\" are used interchangeably in the motorsport and aerospace TIG welding community, though the precise chemistry mapping should be verified against the specific WPS for critical applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Do I have to preheat 4130 steel before TIG welding?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. 4130 chrome-moly steel has a higher carbon equivalent (CE ~0.65) than mild steel (CE ~0.40), which increases its hardenability and susceptibility to hydrogen-induced cold cracking in the heat-affected zone. For wall thicknesses above 0.080 in, minimum preheat of 150–200°F is strongly recommended. For thicknesses above 0.125 in, 300°F minimum is required per most WPS. Thin-wall motorsport tube (0.049–0.065 in) is sometimes welded without preheat by experienced fabricators in controlled low-humidity environments, but this is not recommended practice for structural or safety-critical joints. When in doubt, preheat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can I use ER70S-6 mild steel TIG rod on 4130 steel?\u003c\/strong\u003e\u003cbr\u003eER70S-6 can be used on 4130 steel and will produce a sound weld in the as-welded condition, but the weld metal will be significantly undermatched (70 ksi vs. 80+ ksi for the 4130 base metal) and will not respond to heat treatment. For non-structural repairs, light fixtures, and non-safety-critical applications, ER70S-6 on 4130 is sometimes acceptable. For motorsport roll cages, aerospace structures, pressure piping, and any application where mechanical properties are specified, the correct matching filler (Harris 4130 \/ ER80S-D2) must be used. Sanctioning bodies (SFI, FIA) and engineering specifications virtually always require matching or equivalent Cr-Mo filler on 4130 structural weldments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What shielding gas should I use for 4130 chrome-moly TIG welding?\u003c\/strong\u003e\u003cbr\u003e100% argon is required. Never use CO₂-containing shielding gas blends (75\/25 Ar\/CO₂, 98\/2 Ar\/CO₂, or tri-mix) for chrome-moly GTAW. CO₂ in the shielding gas will oxidize the chromium in the weld pool, forming chromium carbides at grain boundaries (sensitization) and reducing the Cr and Mo content of the weld metal — directly undermining the alloying benefit that makes 4130 superior to mild steel. Pure argon at 15–20 CFH with a gas lens assembly provides the cleanest, most oxide-free deposit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Does 4130 chrome-moly TIG rod require post-weld heat treatment?\u003c\/strong\u003e\u003cbr\u003eFor most motorsport and general fabrication applications (thin-wall tube, non-pressure), full PWHT (normalize or anneal) is not required if proper preheat and slow cooling are used. For aerospace structural joints (4130 and 4340), PWHT to drawing requirements (typically stress relief at 1025°F or full normalize-and-temper) is standard. For ASME pressure piping P-No. 4 and P-No. 5 chrome-moly, PWHT is mandatory per ASME B31.3 code. Always consult the applicable engineering document, WPS, and code for PWHT requirements on the specific application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: How do I avoid cracking when TIG welding 4130 steel?\u003c\/strong\u003e\u003cbr\u003eThree critical practices prevent cracking: (1) \u003cstrong\u003eAdequate preheat\u003c\/strong\u003e — the HAZ must be above the minimum preheat temperature continuously throughout welding, not just at arc start. Use a contact pyrometer or temp sticks to verify; (2) \u003cstrong\u003eDry filler and base metal\u003c\/strong\u003e — all moisture must be eliminated from the rod, base metal surface, and shielding gas system (check the argon regulator for moisture if welding in cold conditions); and (3) \u003cstrong\u003eSlow cooling\u003c\/strong\u003e — do not quench, blow air on, or rapidly cool 4130 weldments. Wrap in insulating blanket post-weld until below 200°F. Delayed cracking (appearing hours or days after welding) is the most dangerous failure mode and is caused by hydrogen in a hard, high-stress HAZ.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: What is the difference between Harris 4130 TIG rod and Harris ER70S-6 TIG rod for chrome-moly work?\u003c\/strong\u003e\u003cbr\u003eThe fundamental difference is alloy chemistry and strength. Harris 4130 rod contains 0.90–1.20% chromium and 0.40–0.65% molybdenum — the same alloying elements that give 4130 steel its high strength, hardenability, and elevated-temperature performance. These elements also allow the weld deposit to respond to heat treatment, so a normalized-and-tempered 4130 weld joint can reach 95,000–125,000 psi tensile depending on heat treatment cycle. ER70S-6 is a plain carbon-manganese-silicon steel filler with no Cr or Mo — it produces a 70,000 psi as-welded deposit that cannot be heat-treated to higher strength and does not provide the chrome-moly alloying benefit.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What AWS classification is Harris 4130 chrome-moly TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Harris 4130 TIG rod is classified as ER80S-D2 per AWS A5.28. The 4130 designation reflects the AISI steel chemistry (0.30% carbon, 1.0% chromium, 0.25% molybdenum), closely matching ER80S-D2 chemistry. AWS A5.28 ER80S-D2 and '4130 rod' are used interchangeably in motorsport and aerospace TIG welding, though the precise chemistry mapping should be verified for critical applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I have to preheat 4130 steel before TIG welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, in most cases. 4130 chrome-moly steel has a higher carbon equivalent (CE ~0.65) than mild steel, increasing susceptibility to hydrogen-induced cold cracking. For wall thicknesses above 0.080 in, minimum preheat of 150-200°F is strongly recommended. For thicknesses above 0.125 in, 300°F minimum is required per most WPS.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use ER70S-6 mild steel TIG rod on 4130 steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER70S-6 can produce a sound weld on 4130 in as-welded condition but will be significantly undermatched (70 ksi vs. 80+ ksi for 4130) and will not respond to heat treatment. For motorsport roll cages, aerospace structures, and pressure piping, matching Harris 4130\/ER80S-D2 filler is required. Sanctioning bodies (SFI, FIA) virtually always require matching Cr-Mo filler on 4130 structural weldments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shielding gas should I use for 4130 chrome-moly TIG welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"100% argon is required. Never use CO2-containing shielding gas blends for chrome-moly GTAW. CO2 in the shielding gas will oxidize the chromium in the weld pool, forming chromium carbides and reducing Cr and Mo content — undermining the alloying benefit that makes 4130 superior to mild steel. Pure argon at 15-20 CFH with a gas lens assembly provides the cleanest, most oxide-free deposit.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does 4130 chrome-moly TIG rod require post-weld heat treatment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For motorsport thin-wall tube fabrication, full PWHT is not required if proper preheat and slow cooling are used. For aerospace structural joints, stress relief at 1025°F or full normalize-and-temper is standard. For ASME pressure piping P-No. 4\/5 chrome-moly, PWHT is mandatory per ASME B31.3. Always consult the applicable WPS and code for specific PWHT requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I avoid cracking when TIG welding 4130 steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Three practices prevent cracking: (1) Adequate preheat — HAZ must remain above minimum preheat temperature continuously; (2) Dry filler and base metal — eliminate all moisture from rod and base metal surface; (3) Slow cooling — do not quench or blow air on 4130 weldments, wrap in insulating blanket until below 200°F. Delayed cracking appearing hours or days after welding is caused by hydrogen in a hard, high-stress HAZ.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between Harris 4130 TIG rod and ER70S-6 for chrome-moly work?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Harris 4130 rod contains 0.90-1.20% chromium and 0.40-0.65% molybdenum matching 4130 steel's alloying elements, allowing the weld deposit to respond to heat treatment and reach 95,000-125,000 psi tensile depending on heat treatment cycle. ER70S-6 is a plain carbon-manganese-silicon steel filler with no Cr or Mo — produces a 70,000 psi as-welded deposit that cannot be heat-treated to higher strength.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258828091543,"sku":"0413050","price":300.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-4130-chrome-moly-tig-gtaw-welding-rod-332-36in-10lb-box-0413050-harris-1.jpg?v=1753396796"},{"product_id":"harris-630-er630-17-4ph-stainless-steel-tig-gtaw-welding-alloy-3-32-in-2-4-mm-10-lb-box-174ph50","title":"Harris 630 ER630 (17-4PH) Stainless Steel TIG (GTAW) Welding Alloy - 3\/32 in (2.4 mm) - 10 lb Box - 174PH50","description":"\u003ch2\u003eWhat Is Harris 630 ER630 (17-4PH) Stainless Steel TIG Welding Alloy?\u003c\/h2\u003e\n\u003cp\u003eHarris 630 ER630 (17-4PH) Stainless Steel TIG (GTAW) Welding Alloy — 3\/32 in (2.4 mm), 10 lb Box (174PH50) — is a precipitation-hardening martensitic stainless steel filler metal classified under AWS A5.9 as ER630. This rod is the weld filler counterpart to AISI Type 630 (also known as 17-4 PH) base metal, which derives its name from its nominal composition of 17% chromium and 4% nickel, with approximately 4% copper and a small niobium addition that controls the aging precipitation response. ER630 is one of only a handful of standard AWS filler metals that produce a truly matching deposit for precipitation-hardened (PH) stainless grades, making it indispensable when weld joints must achieve the same high strength and hardness as the parent material after post-weld aging.\u003c\/p\u003e\n\u003cp\u003eThe 3\/32 in (2.4 mm) diameter is a medium-to-large TIG rod calibrated for structural 17-4 PH weldments with wall thicknesses of 3\/16 in to 1\/2 in — typical dimensions in aerospace brackets, oil and gas downhole components, pump shafts, and valve bodies. Harris Products Group (a Lincoln Electric company) manufactures this alloy to the tight composition windows required for predictable aging response.\u003c\/p\u003e\n\n\u003ch2\u003eAWS Classification, Specifications \u0026amp; Mechanical Properties\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS Classification:\u003c\/strong\u003e ER630 per AWS A5.9\/A5.9M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChromium:\u003c\/strong\u003e 16.0–17.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNickel:\u003c\/strong\u003e 4.5–5.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper:\u003c\/strong\u003e 3.25–4.00%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNiobium + Tantalum:\u003c\/strong\u003e 0.15–0.30%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 0.05% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManganese:\u003c\/strong\u003e 0.25–0.75%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon:\u003c\/strong\u003e 0.75% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 3\/32 in (2.4 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod Length:\u003c\/strong\u003e 36 in (914 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 10 lb box\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTensile Strength (as-welded \/ solution-annealed condition):\u003c\/strong\u003e ~130,000 psi (897 MPa) solution annealed; up to 190,000 psi (1,310 MPa) after H900 aging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYield Strength (after H900 aging at 900 °F \/ 482 °C):\u003c\/strong\u003e ~170,000 psi (1,172 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElongation (H900):\u003c\/strong\u003e ~10–14%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness (H900):\u003c\/strong\u003e ~42–46 HRC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBest Applications for ER630 \/ 17-4 PH TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAerospace Structural Components:\u003c\/strong\u003e Airframe brackets, landing gear components, fasteners, and attachment fittings fabricated in 17-4 PH bar and plate. The weld deposit after H900 or H1025 aging reaches yield strengths of 110,000–170,000 psi, supporting the strength requirements of aircraft primary structures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil and Gas Downhole Equipment:\u003c\/strong\u003e Pump shafts, valve stems, mandrels, and handling tools in 17-4 PH where corrosion resistance, high strength, and resistance to sulfide stress cracking (with appropriate heat treatment) are required. NACE MR0175\/ISO 15156 governs hydrogen sulfide environments — consult applicable HRC limits.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDefense and Military Hardware:\u003c\/strong\u003e Weapon components, sensor housings, submarine fittings, and pressure containment vessels where the high strength-to-weight ratio of 17-4 PH is combined with the need for full-penetration weld joints that match base metal strength after aging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedical and Pharmaceutical Devices:\u003c\/strong\u003e Surgical instrument components, implantable device housings, and pharmaceutical processing equipment where passivated 17-4 PH surfaces combine corrosion resistance with high strength — and weld joints must maintain both properties after aging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump and Compressor Components:\u003c\/strong\u003e Impellers, diffusers, and volute casings in chemical process pumps where 17-4 PH's combination of corrosion resistance, machinability after annealing, and high post-age strength is preferred over weaker austenitic grades.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRepair Welding of 17-4 PH Castings:\u003c\/strong\u003e Sand-cast and investment-cast 17-4 PH components (CB-7Cu-1 per ASTM A747) are repaired with ER630 TIG to restore dimensional accuracy and mechanical properties prior to re-aging the casting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to TIG Weld with Harris ER630 3\/32 in Rod — Settings, Gas \u0026amp; Heat Treatment\u003c\/h2\u003e\n\u003ch3\u003ePre-Weld Requirements\u003c\/h3\u003e\n\u003cp\u003e17-4 PH and ER630 filler require careful pre- and post-weld practices to achieve the specified mechanical properties:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBase metal condition:\u003c\/strong\u003e Weld 17-4 PH in the solution-annealed (Condition A) state whenever possible. Welding in the aged condition creates a heavily overaged HAZ adjacent to the fusion boundary, significantly reducing toughness.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreheat:\u003c\/strong\u003e 200–300 °F (93–149 °C) for material over 1\/2 in thickness. Thinner sections may be welded without preheat from room temperature.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCleanliness:\u003c\/strong\u003e 17-4 PH is sensitive to hydrogen-induced cracking. Degrease all faying surfaces and rod with acetone. Use dry, clean gloves. Do not allow moisture on the weld joint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMachine Settings\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess:\u003c\/strong\u003e GTAW (TIG), DCEN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTungsten:\u003c\/strong\u003e 2% ceriated (grey) or 2% lanthanated, 1\/8 in diameter preferred for 3\/32 in rod\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e3\/16 in material: 100–150 A\u003c\/li\u003e\n      \u003cli\u003e1\/4 in material: 130–175 A\u003c\/li\u003e\n      \u003cli\u003e3\/8 in material: 160–220 A\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterpass temperature:\u003c\/strong\u003e ≤300 °F (149 °C). Allow interpass cooling to prevent martensite transformation from over-tempering during welding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShielding Gas\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% Argon at 20–30 CFH. 17-4 PH is prone to oxidation of chromium in the HAZ; generous Argon shielding minimizes oxide scale.\u003c\/li\u003e\n  \u003cli\u003eBack-purge pipe and tubular joints with 100% Argon at 2–5 CFH.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePost-Weld Heat Treatment (PWHT)\u003c\/h3\u003e\n\u003cp\u003eTo restore full mechanical properties after welding, a solution anneal and re-aging cycle is required:\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSolution Anneal (Condition A):\u003c\/strong\u003e Heat to 1,900 °F (1,038 °C) ± 25 °F, hold 30 minutes per inch of thickness (1 hour minimum), cool rapidly to below 90 °F (32 °C) by air cool or oil quench on heavy sections to ensure full martensite transformation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAge at desired H-condition:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003eH900: 900 °F (482 °C) for 1 hour — highest strength, lowest toughness\u003c\/li\u003e\n      \u003cli\u003eH1025: 1,025 °F (552 °C) for 4 hours — balanced strength and toughness (most common structural choice)\u003c\/li\u003e\n      \u003cli\u003eH1150: 1,150 °F (621 °C) for 4 hours — lower strength, improved toughness and corrosion resistance\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eStorage and Handling\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eStore in original packaging at 50–100 °F (10–38 °C) below 60% RH. ER630 is a martensitic stainless wire — surface oxidation will cause arc instability and bead discoloration.\u003c\/li\u003e\n  \u003cli\u003eHandle with clean dry gloves only. Hydrogen contamination from skin oils can initiate delayed cracking in the martensitic HAZ, which is more susceptible to hydrogen embrittlement than austenitic stainless or carbon steel HAZ.\u003c\/li\u003e\n  \u003cli\u003eSeparate from austenitic stainless rods (ER308L, ER316L) in storage. The two rod types look similar but are metallurgically incompatible for 17-4 PH applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines and Base Metals\u003c\/h2\u003e\n\u003cp\u003eAny DC TIG machine suitable for stainless steel TIG welding is appropriate for ER630. Lincoln Electric platforms commonly used in aerospace and oil and gas 17-4 PH fabrication:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLincoln Dynasty 280 DX and 400 (precise amperage control for sensitive PH alloys)\u003c\/li\u003e\n  \u003cli\u003eLincoln Precision TIG 275 (K2533-2)\u003c\/li\u003e\n  \u003cli\u003eLincoln Square Wave TIG 300 (DCEN mode)\u003c\/li\u003e\n  \u003cli\u003eLincoln PTA-26 and PTA-26V TIG torch packages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary base metals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI Type 630 \/ 17-4 PH stainless (all bar, plate, and tube forms)\u003c\/li\u003e\n  \u003cli\u003eASTM A564 Type 630 (aged bar)\u003c\/li\u003e\n  \u003cli\u003eASTM A693 Type 630 (plate and strip)\u003c\/li\u003e\n  \u003cli\u003eASTM A747 Grade CB-7Cu-1 (castings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions — Harris 630 ER630 (17-4 PH) TIG Welding Alloy\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What aging heat treatment produces the highest strength with ER630 weld deposits?\u003c\/strong\u003e\u003cbr\u003e\nA: H900 aging at 900 °F (482 °C) for 1 hour after solution anneal produces the highest tensile strength — approximately 190,000 psi (1,310 MPa) — but also the lowest toughness and impact resistance. H900-condition 17-4 PH weld joints are used in aerospace fasteners and high-load structural fittings. For applications requiring better toughness, H1025 (1,025 °F \/ 4 hours) or H1100 (1,100 °F \/ 4 hours) provide more balanced properties.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I weld 17-4 PH without solution-annealing after welding?\u003c\/strong\u003e\u003cbr\u003e\nA: Direct aging of as-welded 17-4 PH is possible using the Condition A + direct aging approach (weld in Condition A, skip re-solution anneal, age directly). This produces adequate strength but the HAZ properties will be less uniform than solution-anneal + age. For critical structural applications, ASTM and AMS specifications typically require full solution anneal + age after welding. Consult the applicable material specification and design engineering before substituting direct aging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Is ER630 the same as 17-4 PH filler — are there other trade names?\u003c\/strong\u003e\u003cbr\u003e\nA: ER630 is the AWS classification; 17-4 PH is the common AISI\/SAE designation for the base metal grade. Other designations you may encounter for this alloy family include UNS S17400, AMS 5827 (wire), AMS 5825 (bar), ASTM A693 Type 630, and various proprietary names (e.g., Custom 455 is a related but different PH grade — do not substitute). Harris ER630 rod is manufactured to AWS A5.9 ER630 and AMS 5827.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Why does 17-4 PH weld crack more easily than austenitic stainless?\u003c\/strong\u003e\u003cbr\u003e\nA: 17-4 PH solidifies as fully ferritic\/martensitic structure, not austenitic. This microstructure is more susceptible to hydrogen-induced cold cracking (HICC) and underbead cracking than austenitic alloys. Prevention: (1) minimize moisture — dehydrate all tooling and heat joint to 200–300 °F before welding; (2) use dry, clean rod; (3) allow controlled cooling after welding (do not quench below 90 °F before the martensite transformation completes); (4) conduct solution anneal promptly after welding — do not leave the weld in the as-welded martensitic state for extended periods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Can ER630 be used for welding 15-5 PH stainless steel?\u003c\/strong\u003e\u003cbr\u003e\nA: ER630 is often used for 15-5 PH (15Cr-5Ni-3Cu) weldments as the closest standard AWS classification match. 15-5 PH filler does not have a distinct AWS classification — most PH fabrication codes and material specifications list ER630 as the acceptable filler for both 17-4 and 15-5 PH base metals. Verify with the applicable material specification (AMS, ASTM, MIL-SPEC) before welding critical 15-5 PH structures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: What shielding gas produces the best results on 17-4 PH TIG welding?\u003c\/strong\u003e\u003cbr\u003e\nA: 100% Argon at 20–30 CFH is strongly preferred. Helium blends are sometimes used for thicker section (over 1\/2 in) to increase travel speed, but the higher heat input can cause grain growth in the HAZ and overaging of nearby metal if interpass temperature exceeds 300 °F. CO₂ additions are not used on PH stainless — CO₂ promotes carbon pickup and oxidation that disrupts the aging response.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: Where does Harris ER630 fit in oil and gas NACE MR0175 requirements?\u003c\/strong\u003e\u003cbr\u003e\nA: NACE MR0175\/ISO 15156 restricts hardness in sour-service (H₂S) environments. 17-4 PH in H1150 or H1150M condition (maximum HRC 33) is included in ISO 15156-3 Table A.29 with restrictions. As-welded or H900-condition 17-4 PH typically exceeds the 33 HRC limit and is not acceptable for sour service without a conforming heat treatment. Consult the applicable NACE\/ISO 15156 annex and the project's sour-service qualification documentation before specifying ER630 for downhole sour-gas equipment.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What aging heat treatment produces the highest strength with ER630 weld deposits?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"H900 aging at 900 °F (482 °C) for 1 hour after solution anneal produces the highest tensile strength — approximately 190,000 psi — but also the lowest toughness. For balanced properties, H1025 (1,025 °F \/ 4 hours) is the most common structural choice.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I weld 17-4 PH without solution-annealing after welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Direct aging of as-welded 17-4 PH is possible and produces adequate strength, but the HAZ properties will be less uniform than solution-anneal + age. For critical structural applications, ASTM and AMS specifications typically require full solution anneal + age after welding.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is ER630 the same as 17-4 PH filler?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER630 is the AWS classification; 17-4 PH is the common AISI\/SAE designation for the base metal grade. Other designations include UNS S17400, AMS 5827 (wire), and ASTM A693 Type 630. Harris ER630 rod is manufactured to AWS A5.9 ER630 and AMS 5827.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does 17-4 PH weld crack more easily than austenitic stainless?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"17-4 PH solidifies as fully ferritic\/martensitic structure, which is more susceptible to hydrogen-induced cold cracking than austenitic alloys. Prevention: minimize moisture, use dry clean rod, allow controlled cooling after welding, and conduct solution anneal promptly after welding.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can ER630 be used for welding 15-5 PH stainless steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER630 is often used for 15-5 PH weldments as the closest standard AWS classification match. 15-5 PH filler does not have a distinct AWS classification — most fabrication codes list ER630 as the acceptable filler for both 17-4 and 15-5 PH base metals.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shielding gas produces the best results on 17-4 PH TIG welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"100% Argon at 20–30 CFH is strongly preferred. Helium blends can be used for thicker sections but higher heat input can cause grain growth in the HAZ. CO₂ additions are not used on PH stainless — CO₂ promotes carbon pickup and oxidation that disrupts the aging response.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Where does Harris ER630 fit in oil and gas NACE MR0175 requirements?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"NACE MR0175\/ISO 15156 restricts hardness in sour-service environments. 17-4 PH in H1150 or H1150M condition (maximum HRC 33) is included with restrictions. As-welded or H900-condition 17-4 PH typically exceeds the 33 HRC limit and is not acceptable for sour service without a conforming heat treatment.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258828255383,"sku":"174PH50","price":231.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-630-er630-17-4ph-stainless-tig-gtaw-welding-rod-174ph-332-10-box-174ph50-harris-1.jpg?v=1753396796"},{"product_id":"harris-silicon-bronze-tig-welding-rod-1-16-36in-10lb-box-03sib30","title":"ERCuSi-A 1\/16\" Silicon Bronze TIG Welding Rod — 10 lb | Harris","description":"\u003ch2\u003eWhat Is Harris ERCuSi-A Silicon Bronze TIG Welding Rod 1\/16 in?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris ERCuSi-A Silicon Bronze TIG Welding Rod\u003c\/strong\u003e (part number 03SIB30) is a fine-diameter copper-silicon filler metal classified \u003cstrong\u003eERCuSi-A per AWS A5.7\/A5.7M\u003c\/strong\u003e. Available in a 1\/16 in (1.59 mm) diameter, 36-inch cut length, 10 lb box, this rod provides the same silicon bronze chemistry as larger diameter ERCuSi-A rods — approximately 94% copper with 2.8–4.0% silicon, plus trace manganese and tin — but in the fine diameter needed for precision TIG work on thin copper alloy sections, light-gauge steel braze-welding, and intricate artistic metalwork. Harris Products Group, a Lincoln Electric company, produces this rod with consistent lot chemistry for repeatable arc character and weld pool behavior. The 1\/16 in diameter allows welding at significantly lower amperage (40–90 A) than the 1\/8 or 3\/32 in sizes, extending the usefulness of the ERCuSi-A alloy to thin-wall copper tube, delicate silicon bronze sculpture, and thin-gauge automotive sheet metal braze-welding where the larger diameter would deposit too much material per pass.\u003c\/p\u003e\n\u003cp\u003eSilicon bronze is one of the few filler metals that bridges fusion copper welding and braze-welding applications in a single rod. On silicon bronze or copper base metal, ERCuSi-A TIG produces a true fusion weld. On mild steel, galvanized steel, or thin stainless, the same rod produces a braze-weld — the base metal does not melt, but the silicon bronze bonds to the cleaned surface at below-steel-melting temperatures. This dual capability makes 1\/16 in ERCuSi-A a uniquely versatile tool in automotive restoration, artistic metal fabrication, and custom copper plumbing applications.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — ERCuSi-A 1\/16 in\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eERCuSi-A (AWS A5.7\/A5.7M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003e03SIB30\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1\/16 in (1.59 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon Content\u003c\/td\u003e\n\u003ctd\u003e2.8–4.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003ctd\u003eBalance (~94–96%)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003e1.5% max\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eZinc\u003c\/td\u003e\n\u003ctd\u003e1.0% max\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTin\u003c\/td\u003e\n\u003ctd\u003e1.0% max\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥55,000 psi (379 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥17%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEN\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eThin copper alloy fusion welding; thin steel and galvanized steel braze-welding; silicon bronze sculpture; bicycle frames\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for ERCuSi-A 1\/16 in Silicon Bronze TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThin-Wall Copper Tube Welding:\u003c\/strong\u003e 3\/8 in–3\/4 in OD copper water pipe, 1\/4 in instrumentation tubing, and medical gas copper tube at thin wall gauges (Type L, Type K). The 1\/16 in diameter provides precise heat control on small-bore copper joints where 3\/32 in or 1\/8 in rod deposits too much filler and risks flooding the bore.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon Bronze Sculpture \u0026amp; Art Metal:\u003c\/strong\u003e Delicate sculpture assemblies, thin-section bronze castings, and art metalwork requiring fine, controllable bead placement. The 1\/16 in diameter allows detail TIG work at 40–70 A that would be impossible with larger-diameter bronze rod.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive Sheet Metal Braze-Welding (Thin Gauge):\u003c\/strong\u003e Joining 18–22 gauge galvanized steel body panels with minimum heat input. Classic car restoration shops working on thin vintage steel body panels (0.030–0.055 in) use 1\/16 in silicon bronze TIG to braze-weld patches and seams without the warpage that would result from fusion welding at those thicknesses.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBicycle Frame Building — Detail Joints:\u003c\/strong\u003e Mitered tube-to-tube joints, seat stay caps, dropout reinforcements, and dropouts on steel and chromoly bicycle frames where the joint geometry is too small and detailed for 3\/32 in rod.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlumbing Repair \u0026amp; Custom Copper Work:\u003c\/strong\u003e Precision copper repairs, custom copper furniture components (Craftsman-style table bases, copper bar tops, decorative pipe work), and medical\/dental gas plumbing repairs in confined locations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJewelry \u0026amp; Decorative Metalwork:\u003c\/strong\u003e Large-scale jewelry and sculptural metalwork in silicon bronze where the 1\/16 in diameter matches the scale of the work. Bronze casting repair, metal art installations, and museum restoration projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris ERCuSi-A 1\/16 in TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eFine-diameter silicon bronze TIG welding at 1\/16 in requires low-amperage DCEN setup and particular attention to base metal preparation:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBase Metal Preparation (Critical):\u003c\/strong\u003e Silicon bronze will not properly wet onto contaminated surfaces. For copper base metal, clean with 400-grit abrasive and degrease with acetone. For steel braze-welding, clean all rust, paint, grease, and mill scale — sand to bright steel with 80–120 grit abrasive and degrease immediately before welding. Any contamination prevents the liquid bronze from wetting the surface, producing cold-lap (lack of bond) defects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTungsten for 1\/16 in Rod:\u003c\/strong\u003e 1\/16 in 2% ceriated tungsten is ideal for low-amperage precision work with 1\/16 in ERCuSi-A. At 40–90 A DCEN, the ceriated tungsten provides excellent arc starts. Grind to a fine point for precise arc placement on small joints and intricate sculptural geometry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSteel Braze-Weld Technique:\u003c\/strong\u003e For thin-gauge steel, hold the arc at the filler rod only — do not point the tungsten directly at the steel surface. Allow the molten silicon bronze to flow and wet the steel under its own fluidity and gravity. If the steel begins to glow orange-red, the amperage is too high and the steel is overheating. Reduce amperage and increase travel speed to prevent steel melt-through.\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eAmperage\u003c\/th\u003e\n\u003cth\u003eTravel Speed\u003c\/th\u003e\n\u003cth\u003eShielding Gas\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon bronze sculpture (thin section)\u003c\/td\u003e\n\u003ctd\u003e40–70 A DCEN\u003c\/td\u003e\n\u003ctd\u003e3–5 in\/min\u003c\/td\u003e\n\u003ctd\u003e100% Ar, 15 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper tube 3\/8 in OD\u003c\/td\u003e\n\u003ctd\u003e50–80 A DCEN\u003c\/td\u003e\n\u003ctd\u003e4–6 in\/min\u003c\/td\u003e\n\u003ctd\u003e100% Ar, 15–18 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBraze-weld 20 gauge galvanized steel\u003c\/td\u003e\n\u003ctd\u003e45–70 A DCEN\u003c\/td\u003e\n\u003ctd\u003e5–8 in\/min\u003c\/td\u003e\n\u003ctd\u003e100% Ar, 15 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBraze-weld 18 gauge steel\u003c\/td\u003e\n\u003ctd\u003e60–85 A DCEN\u003c\/td\u003e\n\u003ctd\u003e4–7 in\/min\u003c\/td\u003e\n\u003ctd\u003e100% Ar, 16 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for Harris ERCuSi-A 1\/16 in TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOxidation Management:\u003c\/strong\u003e Copper alloy rods in fine 1\/16 in diameter develop surface oxidation faster than larger diameters due to higher surface-area-to-volume ratio. Store in sealed original box in a dry environment (below 50% RH). Light green-brown tarnish (patina) is normal and generally does not affect weld quality. Severe corrosion or pitting warrants rod replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGloves When Handling:\u003c\/strong\u003e Clean gloves prevent skin oils from contaminating the copper rod surface. While silicon bronze is not as hydrogen-sensitive as aluminum, skin grease can cause poor wetting on steel braze-welds where surface cleanliness is already the most critical variable.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVentilation:\u003c\/strong\u003e Copper and silicon alloy welding generates fumes. Store in ventilated areas and weld in well-ventilated spaces. 1\/16 in rod at lower amperage generates less fume than larger-diameter rods at higher amperage, but adequate ventilation is still required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKink Prevention:\u003c\/strong\u003e Like all fine-diameter TIG rods, the 1\/16 in silicon bronze rod kinks if bent. Handle the box gently and store flat. A kinked rod creates irregular arc behavior at the bend point — discard kinked sections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeparation from Aluminum Rods:\u003c\/strong\u003e Store silicon bronze rods separately from aluminum TIG rods. At 1\/16 in, they are dimensionally similar and visually difficult to distinguish. Accidentally using silicon bronze on aluminum creates a completely incompatible weld — copper and aluminum do not form a sound weld. Label boxes clearly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals\u003c\/h2\u003e\n\u003cp\u003eAny DC TIG machine works for 1\/16 in ERCuSi-A at the low amperages used:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Invertec V155-S:\u003c\/strong\u003e Compact DC TIG machine well-suited for body shop silicon bronze braze-welding and light copper fabrication with 1\/16 in rod.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200 (K5126-1):\u003c\/strong\u003e Versatile AC\/DC machine; DC mode for silicon bronze and copper; AC mode for aluminum — handles both alloy families with one machine.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAny GTAW machine with HF start and foot pedal:\u003c\/strong\u003e Foot pedal is recommended for thin copper tube work and artistic sculpture where amperage modulation in and out of corners and terminations is essential.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003eERCuSi-A 1\/16 Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon bronze (Everdur CDA 655)\u003c\/td\u003e\n\u003ctd\u003e✅ Primary fusion weld\u003c\/td\u003e\n\u003ctd\u003eMatching chemistry — sculpture, architectural bronze\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC110 \/ C102 copper (thin)\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003eSmall-bore tube welding; preheat only required on heavier sections\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMild steel (braze-weld, thin gauge)\u003c\/td\u003e\n\u003ctd\u003e✅ Braze-weld\u003c\/td\u003e\n\u003ctd\u003eDo not melt steel; use low amperage and fast travel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGalvanized steel (18–22 gauge)\u003c\/td\u003e\n\u003ctd\u003e✅ Automotive primary\u003c\/td\u003e\n\u003ctd\u003eOEM automotive braze-weld spec; reduces zinc fume\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eChromoly steel (bicycle frames)\u003c\/td\u003e\n\u003ctd\u003e✅ Braze-weld\u003c\/td\u003e\n\u003ctd\u003eClassic technique; low distortion on thin-wall CrMo tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBrass (70\/30, 65\/35)\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eZinc-bearing base metal; ERCuSn-A may better match brass composition\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eCopper-aluminum intermetallics form brittle joint — never use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFAQs — Harris ERCuSi-A 1\/16 in Silicon Bronze TIG Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Can I use 1\/16 in silicon bronze TIG rod for bicycle frame building?\u003c\/strong\u003e\u003cbr\u003eYes. The 1\/16 in diameter is ideal for bicycle frame braze-welding work. Classic steel frame builders use silicon bronze TIG at 50–80 A for the small-section tube-to-tube joints found in bicycle frames — seat tubes (1 in OD typically), top tubes, down tubes, and stays. The low heat input of silicon bronze TIG versus steel fusion TIG preserves the mechanical properties of thin-wall chromoly (4130) tubing, which can be negatively affected by the high heat of full fusion welding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Is 1\/16 in silicon bronze suitable for copper water pipe joints?\u003c\/strong\u003e\u003cbr\u003eYes, for pipe up to about 3\/4 in OD at Type L or K wall thickness. For larger-bore pipe above 3\/4 in OD, 3\/32 in or 1\/8 in ERCuSi-A rod is more efficient. The 1\/16 in diameter is excellent for 3\/8 in and 1\/2 in copper tube joints — small-bore medical gas, pneumatic control, and instrument copper piping commonly found in process facilities.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What causes my silicon bronze weld bead to \"ball up\" instead of wetting the steel?\u003c\/strong\u003e\u003cbr\u003e\"Balling up\" — where the molten bronze does not flow out and wet the base metal — is caused by one of three things: (1) contaminated base metal surface — the bronze will not wet through paint, rust, mill scale, or oil; clean to bright metal immediately before welding, (2) too little amperage or arc is aimed at the rod only and not warming the base metal surface, (3) base metal too cold — particularly relevant in cold shop conditions where the steel draws heat away faster than the arc can supply it. Increase travel speed slightly and aim the arc between the rod and the joint to preheat the steel surface ahead of the molten pool.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Does silicon bronze TIG welding leave a visible bead line on car body panels?\u003c\/strong\u003e\u003cbr\u003eYes. Silicon bronze TIG braze-welding leaves a visible bronze-colored (golden) bead line that is distinctly different from the steel base metal color. In automotive body repair, this bead is typically dressed with a grinder (disc or flap wheel) or body filler, then primed and painted. The braze bead grinds easily — much more smoothly than fusion steel welds — and a skilled body worker can dress a silicon bronze braze seam to an invisible finish under paint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What is the difference between 1\/16 in and 3\/32 in silicon bronze TIG rod for automotive work?\u003c\/strong\u003e\u003cbr\u003eThe 1\/16 in rod is preferred for the thinnest gauges (18–22 gauge steel) and for intricate joints with limited access. It deposits less material per pass at lower amperage, reducing heat input and base metal heating. The 3\/32 in rod is more efficient for 14–16 gauge steel, large panel seams, and structural sections. For typical late-model automotive body repair (most panels are 18–22 gauge), 1\/16 in silicon bronze TIG is the standard choice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: Can I use silicon bronze TIG rod on stainless steel exhaust flanges?\u003c\/strong\u003e\u003cbr\u003eNot recommended for exhaust applications. The ERCuSi-A deposit would create a copper-alloy joint in a high-temperature oxidizing environment — copper alloys are not rated for sustained temperatures above 500°F (260°C) in oxidizing conditions. For stainless exhaust flanges, use a TIG fusion weld with ER308L or ER316L stainless rod. Silicon bronze is for room-temperature and moderate-temperature service only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: Does the 1\/16 in silicon bronze rod work with an automated TIG system?\u003c\/strong\u003e\u003cbr\u003eYes. Cold-wire feed TIG systems can use 1\/16 in ERCuSi-A rod from a coil or spool (ensure the feed system is designed for cut-rod or coiled wire as applicable). Automated silicon bronze TIG braze-welding is used in automotive OEM body-in-white production lines for joining galvanized roof panels to body sides — a production application that validates the 1\/16 in diameter at automated amperage settings of 55–90 A.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use 1\/16 in silicon bronze TIG rod for bicycle frame building?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 1\/16 in diameter is ideal for bicycle frame braze-welding at 50-80 A. Classic steel frame builders use silicon bronze TIG for the small tube-to-tube joints on seat tubes, top tubes, and stays. The low heat input preserves thin-wall chromoly tubing mechanical properties.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What causes my silicon bronze weld bead to ball up instead of wetting the steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Balling up is caused by: contaminated base metal surface (bronze will not wet through paint, rust, or oil), too little amperage, or base metal too cold drawing heat away. Clean to bright metal, increase travel speed, and aim the arc between the rod and joint to preheat the surface.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does silicon bronze TIG welding leave a visible bead line on car body panels?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Silicon bronze TIG leaves a golden bronze-colored bead that differs from steel base metal color. In automotive body repair, the bead is dressed with a grinder or flap wheel and finished with primer and paint. Silicon bronze braze beads grind more smoothly than fusion steel welds.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is 1\/16 in silicon bronze suitable for copper water pipe joints?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, for pipe up to about 3\/4 in OD. It is excellent for 3\/8 in and 1\/2 in copper tube joints in medical gas, pneumatic control, and instrument copper piping. For larger-bore pipe above 3\/4 in, use 3\/32 in or 1\/8 in rod for efficiency.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 1\/16 in and 3\/32 in silicon bronze TIG rod for automotive work?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 1\/16 in rod is preferred for 18-22 gauge steel and intricate joints with limited access. The 3\/32 in rod is more efficient for 14-16 gauge steel and large panel seams. For typical late-model automotive body repair on 18-22 gauge panels, 1\/16 in silicon bronze TIG is the standard choice.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can silicon bronze TIG rod be used on stainless steel exhaust flanges?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Not recommended. ERCuSi-A creates a copper-alloy joint not rated for sustained temperatures above 500 degrees F in oxidizing conditions. For stainless exhaust flanges, use ER308L or ER316L stainless TIG fusion welding.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the 1\/16 in silicon bronze rod work with automated TIG systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Cold-wire feed TIG systems can use 1\/16 in ERCuSi-A from coil or spool. Automated silicon bronze TIG braze-welding is used in automotive OEM body-in-white production for joining galvanized roof panels to body sides at 55-90 A settings.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258832187543,"sku":"03SIB30","price":195.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-silicon-bronze-tig-welding-rod-116-36in-10lb-box-03sib30-harris-2.jpg?v=1753396794"},{"product_id":"harris-3-silicon-bronze-gtaw-tig-welding-rod-1-8-10lb-box-03sib60","title":"Harris 3 Silicon Bronze GTAW TIG Welding Rod 1\/8 10LB Box - 03SIB60","description":"\u003ch2\u003eWhat Is Harris Silicon Bronze TIG Welding Rod ERCuSi-A?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris 3 Silicon Bronze GTAW TIG Welding Rod\u003c\/strong\u003e (part number 03SIB60) is a copper-silicon alloy filler metal classified \u003cstrong\u003eERCuSi-A per AWS A5.7\/A5.7M\u003c\/strong\u003e. Available in a 1\/8 in (3.18 mm) diameter, 36-inch cut length, 10 lb box, this rod is the primary filler metal for TIG welding of copper alloys, silicon bronze fabrications, and — uniquely — for braze-welding mild steel, galvanized steel, and thin-gauge carbon steel with minimal heat input and negligible base-metal distortion. Harris Products Group, a Lincoln Electric company, manufactures this rod with tightly controlled silicon (2.8–4.0%) and copper (balance) content. The 1\/8 in diameter is suited for medium-to-heavy silicon bronze fabrication and braze-welding of sheet steel in the 14 gauge–3\/16 in range.\u003c\/p\u003e\n\u003cp\u003eSilicon bronze TIG rod occupies a unique position in welding: the ERCuSi-A alloy melts at approximately 1,880°F (1,027°C) — well below mild steel's 2,600°F melting point. When used to braze-weld steel, the silicon bronze wets and flows onto the cleaned steel surface without melting the steel itself. This \"cold TIG\" technique on steel produces joints with virtually zero distortion, no zinc fume from galvanized coatings (because the steel is not melted), and a distinctive bronze-colored bead. It is widely used in automotive body panel repair, automotive manufacturing, bicycle frame building, and art metal fabrication.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — ERCuSi-A Silicon Bronze\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eERCuSi-A (AWS A5.7\/A5.7M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003e03SIB60\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1\/8 in (3.18 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon Content\u003c\/td\u003e\n\u003ctd\u003e2.8–4.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003e1.5% max\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eZinc\u003c\/td\u003e\n\u003ctd\u003e1.0% max\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTin\u003c\/td\u003e\n\u003ctd\u003e1.0% max\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003ctd\u003eBalance (~94–96%)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥55,000 psi (379 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eYield Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥32,000 psi (221 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥17%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEN (DC Electrode Negative)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompatible Base Metals\u003c\/td\u003e\n\u003ctd\u003eSilicon bronze, C102\/C110 copper, brass, bronze alloys, mild steel (braze-weld), galvanized steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for ERCuSi-A Silicon Bronze TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon Bronze Fabrication:\u003c\/strong\u003e Custom silicon bronze sculptures, art metal projects, architectural bronze cladding, decorative metalwork, and bronze gate fabrication. ERCuSi-A provides the matching chemistry for silicon bronze (Everdur, CDA 655) base metal in full-fusion TIG joints.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive Body Panel Braze-Welding:\u003c\/strong\u003e Joining galvanized steel body panels, door skins, and floor sections on modern automobiles. At ERCuSi-A brazing temperatures, zinc coatings are not vaporized (unlike fusion MIG welding of galvanized steel), eliminating zinc fume hazard. German, Japanese, and American OEM automotive manufacturers specify silicon bronze braze-welding for zinc-coated structural panels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBicycle Frame Building:\u003c\/strong\u003e Custom steel bicycle frames (chromoly, mild steel) traditionally brazed with silicon bronze for aesthetic bead character and low-distortion joining of thin-wall tubing. Silicon bronze TIG on frames avoids the heat distortion of fusion MIG welding on thin chromoly tubes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThin-Gauge Steel Fabrication:\u003c\/strong\u003e Joining 18–14 gauge mild steel with minimal distortion. Automotive body shops, fabricators of HVAC sheet metal components, and custom metal art studios use silicon bronze TIG to join thin steel parts that would warp severely under fusion MIG or TIG at steel melting temperatures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper Pipe \u0026amp; Fitting Welding:\u003c\/strong\u003e GTAW joining of 1\/2 in and larger copper water pipe and fittings with ERCuSi-A rod — an alternative to torch brazing where high-integrity weld joints with verified penetration are needed (fire suppression systems, high-pressure water, medical gas).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRestoration \u0026amp; Repair:\u003c\/strong\u003e Antique bronze castings, bell metal repair, and art bronze restoration. The silicon bronze filler chemistry matches historical bronze compositions closely enough for sympathetic repairs that take patina treatments similarly to the original metal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris Silicon Bronze TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eSilicon bronze TIG welding uses DCEN polarity (same as stainless), 100% argon, and standard GTAW technique with key differences in heat management:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolarity — DCEN:\u003c\/strong\u003e Silicon bronze and copper alloys use DCEN polarity for TIG welding. Do not use AC — the cathodic cleaning function of AC is for aluminum only and is not needed for copper alloys. DCEN provides the focused, penetrating arc needed to wet and flow the ERCuSi-A alloy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePreheating Copper Base Metal:\u003c\/strong\u003e Pure copper (C102, C110) and thick copper alloy sections are highly thermally conductive — the workpiece conducts heat away from the weld zone faster than the arc can supply it without preheating. For copper sections above 1\/8 in thickness, preheat to 400–500°F (204–260°C) before welding. For silicon bronze base metal (lower conductivity than pure copper), preheat is usually not required below 1\/4 in thickness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeat Input Control for Braze-Welding Steel:\u003c\/strong\u003e When silicon bronze TIG braze-welding steel, keep amperage conservative — just enough to melt the bronze rod and wet the steel surface. Melting the steel base metal defeats the purpose of braze-welding. Steel distortion increases dramatically if amperage is set too high. For 16–18 gauge steel: 50–80 A DCEN. For 14 gauge steel: 80–110 A.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShielding Gas:\u003c\/strong\u003e 100% argon at 18–22 CFH for most silicon bronze TIG work. For copper (high thermal conductivity requires slightly more shielding coverage on the spreading weld pool): 20–25 CFH with a gas lens cup size #7–8.\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eAmperage (DCEN)\u003c\/th\u003e\n\u003cth\u003eTungsten\u003c\/th\u003e\n\u003cth\u003eGas Flow\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon bronze fabrication 1\/8 in\u003c\/td\u003e\n\u003ctd\u003e90–130 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e20 CFH\u003c\/td\u003e\n\u003ctd\u003ePreheat not required\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper 1\/8 in\u003c\/td\u003e\n\u003ctd\u003e120–160 A\u003c\/td\u003e\n\u003ctd\u003e3\/32–1\/8 ceriated\u003c\/td\u003e\n\u003ctd\u003e22 CFH\u003c\/td\u003e\n\u003ctd\u003ePreheat 400°F\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBraze-weld galvanized 16 ga\u003c\/td\u003e\n\u003ctd\u003e55–80 A\u003c\/td\u003e\n\u003ctd\u003e1\/16–3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e18 CFH\u003c\/td\u003e\n\u003ctd\u003eDo NOT melt base steel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBraze-weld mild steel 14 ga\u003c\/td\u003e\n\u003ctd\u003e80–110 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e18–20 CFH\u003c\/td\u003e\n\u003ctd\u003eFast travel, low heat input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for Silicon Bronze TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDry Storage:\u003c\/strong\u003e Store in original sealed box in a dry location (below 50% RH, 40–120°F). Copper alloys are not hydrogen-sensitive like aluminum, but moisture on the rod can cause porosity in the weld pool. Keep boxes sealed when not in use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOxidation on Storage:\u003c\/strong\u003e Silicon bronze develops a green-brown tarnish (surface oxidation) when stored for long periods in humid conditions. Light surface tarnish is acceptable and does not significantly affect weld quality. Heavy scale or pitting should be cleaned with fine abrasive before use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandling:\u003c\/strong\u003e Skin oils and cutting lubricants transferred to the rod can cause porosity in copper alloy TIG welds. Handle with clean gloves or a clean cloth. Wipe rods with acetone if contaminated before use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeparate from Steel Rods:\u003c\/strong\u003e Label silicon bronze boxes clearly to prevent confusion with mild steel TIG rods (which look similar in the 1\/8 in diameter). Accidentally using ERCuSi-A on a structural steel joint produces a very low-strength braze joint — not a fusion weld.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVentilation During Use:\u003c\/strong\u003e Silicon bronze welding generates copper fume. Ensure adequate local exhaust ventilation (LEV) at the welding station. Copper fume fever is an industrial health concern with copper alloy welding — do not weld in enclosed spaces without forced ventilation or respiratory protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals for ERCuSi-A TIG Rod\u003c\/h2\u003e\n\u003cp\u003eSilicon bronze TIG rod uses the same DC TIG machines as stainless and mild steel TIG welding:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Invertec V155-S:\u003c\/strong\u003e Compact DC TIG machine suitable for light silicon bronze fabrication and braze-welding thin steel. Easy portability for body shop or field repair work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200 (K5126-1):\u003c\/strong\u003e Versatile AC\/DC TIG with DC mode for silicon bronze; also covers aluminum TIG work in the same shop with one machine.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAny DC GTAW\/SMAW machine with DCEN output:\u003c\/strong\u003e ERCuSi-A rod requires only DC electrode negative — any DC TIG power source works.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003eERCuSi-A Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon bronze (CDA 655)\u003c\/td\u003e\n\u003ctd\u003e✅ Primary fusion weld\u003c\/td\u003e\n\u003ctd\u003eDirect composition match — art metal, sculpture, structural bronze\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC110 \/ C102 copper\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003ePreheat required for thicker sections — see setup guide\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBrass (CDA 260, 360)\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eUse ERCuSn-A (phosphor bronze) for precise brass composition match if needed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMild steel (braze-weld)\u003c\/td\u003e\n\u003ctd\u003e✅ Braze-weld only\u003c\/td\u003e\n\u003ctd\u003eDoes not fuse the steel — bronze wets and bonds to cleaned steel surface\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGalvanized steel (braze-weld)\u003c\/td\u003e\n\u003ctd\u003e✅ Primary automotive use\u003c\/td\u003e\n\u003ctd\u003eZinc coating intact — no zinc fume from melting; OEM specified\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStainless steel (braze-weld)\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eLow heat input joining of thin stainless to steel components\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eERCuSi-A does not bond to aluminum — use ER4043 or ER5356 for aluminum TIG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\n\u003ch2\u003eTechnical Reference — ERCuSi-A Silicon Bronze TIG Rod: AWS Classification, Metallurgy \u0026amp; Application Guide\u003c\/h2\u003e\n\u003cp\u003eSilicon bronze (Harris ERCuSi-A) is a fundamentally different TIG filler from steel or aluminum rods — it is a copper-base alloy used for braze-welding (brazing at welding amperage) rather than fusion welding in most applications. Understanding this distinction is essential for correct application and technique.\u003c\/p\u003e\n\u003ch3\u003eAWS A5.7 Classification \u0026amp; Chemistry\u003c\/h3\u003e\n\u003cp\u003eHarris ERCuSi-A is classified per \u003cstrong\u003eAWS A5.7\/A5.7M\u003c\/strong\u003e (Copper and Copper-Alloy Bare Welding Rods and Electrodes): Cu ≥94%, Si 2.8–4.0% (primary alloying element), Mn 1.0–1.5%, Sn ≤0.25%, Zn ≤1.0%, Fe ≤0.50%, Pb ≤0.02%. Silicon provides two functions: (1) solid-solution strengthening of the copper matrix, and (2) oxide film formation during welding that protects the melt pool from atmospheric oxygen without requiring flux.\u003c\/p\u003e\n\u003ch3\u003eWhy 1\/8 in Diameter — Production Applications\u003c\/h3\u003e\n\u003cp\u003eThe 1\/8 in (3.175 mm) diameter is the largest standard TIG rod size and is designed for production braze-welding applications requiring fast filler deposit rates:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-gauge galvanized sheet braze-welding:\u003c\/strong\u003e 14–10 gauge (0.075–0.135 in) galvanized HVAC ductwork, rooftop unit frames, refrigeration panel corners. The 1\/8 in rod provides deposition volume for production-rate corner and seam braze-welding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArchitectural copper-to-steel joints:\u003c\/strong\u003e Copper cladding attachment to structural steel frames, copper gutter-to-iron gutter bracket joints, copper-to-steel braze-welded connections in building facades.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBronze sculpture repair:\u003c\/strong\u003e Large-scale bronze casting repair, museum conservation braze-welding, and bronze public art restoration where significant filler volume is needed to fill voids and rebuild lost sections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper plumbing to cast iron:\u003c\/strong\u003e Joining copper pipe to cast iron drain fittings (drain-waste-vent systems) in older building renovation where compatible flux-free joining is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eERCuSi-A Braze-Welding vs Fusion Welding — The Technical Distinction\u003c\/h3\u003e\n\u003cp\u003eIn most ERCuSi-A TIG applications, the base metal (steel, galvanized steel, cast iron) is NOT melted — the base metal is heated to brazing temperature (1500–1700°F \/ 815–927°C) and the silicon bronze filler flows into the joint by capillary action and wetting. This is braze-welding (not true fusion welding). Benefits of braze-welding over fusion welding:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo zinc fuming on galvanized steel (base metal stays below zinc volatilization temperature)\u003c\/li\u003e\n  \u003cli\u003eLess distortion — lower heat input to the steel base metal\u003c\/li\u003e\n  \u003cli\u003eCan join dissimilar metals (copper to steel, steel to cast iron) without compatibility issues\u003c\/li\u003e\n  \u003cli\u003eCosmetically excellent on galvanized: smooth, flush braze bead with good cosmetics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical and Thermal Conductivity of ERCuSi-A Deposits\u003c\/h3\u003e\n\u003cp\u003eERCuSi-A deposits have significantly reduced electrical conductivity compared to pure copper ERCu rod: approximately 7–9% IACS (vs ≥85% IACS for ERCu). The silicon alloying that provides oxidation resistance and flow characteristics dramatically reduces conductivity. Do not use ERCuSi-A silicon bronze rod for electrical bus bar, conductor, or electrical connection welding — use Harris ERCu deoxidized copper rod for those applications.\u003c\/p\u003e\n\u003ch3\u003ePost-Braze Cleaning\u003c\/h3\u003e\n\u003cp\u003eERCuSi-A braze welds on steel and galvanized steel require wire brushing and light grinding to remove the copper-oxide surface film that forms on the deposit exterior. The bulk bead metal underneath the surface film is sound; the surface film is cosmetically rough but not structurally significant. For painted or powder-coated finishes, grind flush and apply zinc-rich primer to any exposed steel areas adjacent to the braze bead before topcoating.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs — Harris Silicon Bronze TIG Welding Rod ERCuSi-A\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the difference between silicon bronze TIG welding and brazing?\u003c\/strong\u003e\u003cbr\u003eSilicon bronze TIG welding uses an electric arc (GTAW process) to melt the silicon bronze filler rod and deposit it onto the base metal. Conventional brazing uses an oxy-fuel torch and flux without an electric arc. Both processes can join steel at below-steel-melting temperatures using copper-based filler. Silicon bronze TIG (braze-welding) provides more precise heat control, no flux, no post-weld flux removal, and better penetration at joints — particularly useful for production automotive work and artistic metalwork requiring clean, controllable deposits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Why use silicon bronze TIG rod on galvanized steel instead of just welding it with ER70S-6?\u003c\/strong\u003e\u003cbr\u003eWhen you fusion-weld galvanized steel with ER70S-6 (or any steel filler at steel melting temperatures), the zinc coating in the weld zone vaporizes at ~1,665°F — producing zinc oxide fumes that cause zinc fume fever (a temporary but unpleasant industrial illness) and burning off the protective coating. Silicon bronze TIG braze-welding runs cool enough that the zinc is not vaporized — the base steel does not melt, the zinc coating immediately around the bead is minimally affected, and zinc fume generation is greatly reduced. Modern automotive OEMs specify braze-welding for joining zinc-coated structural panels for exactly this reason.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can silicon bronze TIG welding be used on structural steel joints?\u003c\/strong\u003e\u003cbr\u003eSilicon bronze TIG (braze-welding) does not produce a fusion weld — it forms a metallurgical bond (braze bond) between the bronze deposit and the steel surface. The joint strength is limited by the bronze deposit's properties (55,000 psi tensile) and the braze interface. For structural steel joints subject to code compliance (AWS D1.1), braze-welding with ERCuSi-A is not a recognized pre-qualified procedure. Silicon bronze braze-welding on steel is appropriate for automotive, artistic, bicycle, and light fabrication applications where the structural load is not code-governed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What filler should I use to TIG weld copper pipe?\u003c\/strong\u003e\u003cbr\u003eERCuSi-A (silicon bronze) is the most common TIG filler for copper pipe and fitting joints. For high-conductivity copper C110 at thickness above 3\/16 in, preheating to 400–500°F before welding is required to prevent the copper's thermal conductivity from chilling the weld pool too quickly. For thin-wall copper tube (below 1\/8 in), ERCuSi-A without preheat typically works at 80–120 A DCEN with careful arc length control. Alternative filler options include ERCu (deoxidized copper rod) and ERCuSn-A (phosphor bronze) for specific application requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Does silicon bronze TIG welding require flux?\u003c\/strong\u003e\u003cbr\u003eNo. Silicon bronze TIG welding uses the argon shielding gas to prevent oxidation — flux is not required. This is a significant advantage over torch brazing with silver alloy or copper alloy brazing rods, which require flux and post-braze flux cleaning. The absence of flux also means no flux residue that can cause corrosion on copper plumbing or bronze art work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: What causes orange\/red sparks when welding with silicon bronze TIG rod?\u003c\/strong\u003e\u003cbr\u003eOrange sparks during silicon bronze TIG welding typically indicate either zinc contamination (from galvanized steel base metal) or excessive amperage causing the base metal steel to partially melt. If welding galvanized steel, some sparking is expected as the zinc coating near the bead edge volatilizes. Reduce amperage to minimize base metal heating. If sparking occurs on clean silicon bronze fabrication (non-galvanized), check for zinc-bearing base metal or clean the bronze for surface contaminants.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: Can I braze-weld stainless steel with silicon bronze TIG rod?\u003c\/strong\u003e\u003cbr\u003eYes. Silicon bronze TIG can braze-weld stainless steel in thin-gauge applications where very low heat input is required — for example, joining thin stainless panels to mild steel frames with minimal distortion. The joint is a braze joint (not a fusion stainless weld), so for applications requiring stainless corrosion resistance in the weld zone, a stainless fusion TIG weld with ER308L or ER316L is preferred. Silicon bronze on stainless creates a copper-alloy deposit that will not match stainless corrosion resistance.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between silicon bronze TIG welding and brazing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Silicon bronze TIG welding uses an electric arc (GTAW) to melt and deposit the filler rod. Torch brazing uses an oxy-fuel flame and flux. Silicon bronze TIG provides more precise heat control, no flux needed, better penetration, and is widely used for automotive body work and artistic metalwork.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why use silicon bronze TIG rod on galvanized steel instead of ER70S-6?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Fusion welding galvanized steel vaporizes the zinc coating at ~1,665 degrees F, producing toxic zinc oxide fumes. Silicon bronze TIG braze-welding runs cool enough that the steel does not melt and zinc is minimally affected. Modern automotive OEMs specify braze-welding for zinc-coated structural panels for this reason.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can silicon bronze TIG welding be used on structural steel joints?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Silicon bronze braze-welding on steel is not a fusion weld and is not a recognized pre-qualified procedure under AWS D1.1 structural code. It is appropriate for automotive, artistic, bicycle, and light fabrication applications where the joint is not code-governed for structural loads.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What filler should I use to TIG weld copper pipe?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ERCuSi-A (silicon bronze) is the most common TIG filler for copper pipe. For C110 copper above 3\/16 in thickness, preheat to 400-500 degrees F before welding. For thin-wall copper tube below 1\/8 in, 80-120 A DCEN without preheat typically works with careful arc length control.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does silicon bronze TIG welding require flux?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. Silicon bronze TIG uses argon shielding gas to prevent oxidation - no flux required. This is a significant advantage over torch brazing as it eliminates flux residue that can cause corrosion on copper plumbing or bronze artwork.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What causes orange sparks when welding with silicon bronze TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Orange sparks typically indicate zinc contamination from galvanized steel base metal or excessive amperage causing partial steel melting. Some sparking is expected when braze-welding galvanized steel. Reduce amperage to minimize base metal heating.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I braze-weld stainless steel with silicon bronze TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, silicon bronze TIG can braze-weld thin stainless steel to mild steel with minimal distortion. However, the copper-alloy deposit will not match stainless corrosion resistance. For stainless corrosion resistance in the weld zone, use ER308L or ER316L fusion TIG welding.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258832515223,"sku":"03SIB60","price":202.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-3-silicon-bronze-gtaw-tig-welding-rod-18-10lb-box-03sib60-harris-1.jpg?v=1753396794"},{"product_id":"harris-308-stainless-steel-tig-gtaw-welding-rod-035-36in-10lb-box-0308tf0","title":"Harris 308 Stainless Steel TIG GTAW Welding Rod .035 36in. 10LB Box - 0308TF0","description":"\u003ch2\u003eWhat Is Harris 308 Stainless Steel TIG GTAW Welding Rod (.035 in)?\u003c\/h2\u003e\n\u003cp\u003eHarris 308 Stainless Steel TIG GTAW Welding Rod (.035 in, 36 in, 10 lb Box — 0308TF0) is a bare wire filler metal classified under AWS A5.9 as ER308. It is formulated to weld 304 and 304L austenitic stainless steel base metals — the most widely used stainless steel in industrial, food processing, and chemical applications. ER308 deposits weld metal with a nominal composition of 20% chromium and 10% nickel, closely matching the chemistry of 304 stainless base metal, which ensures that the weld joint's corrosion resistance and mechanical properties closely track those of the parent material.\u003c\/p\u003e\n\u003cp\u003eThe .035 in (0.9 mm) diameter is a small-diameter TIG rod designed for precision work on light-gauge stainless sheet (16 ga–3\/16 in), root passes on stainless pipe, and instrumentation tubing. The fine diameter melts at lower amperage settings, giving the welder precise puddle control without burning through or causing excessive heat input into the heat-affected zone. Harris Products Group — a Lincoln Electric company — manufactures ER308 rod to tight compositional limits that consistently produce the 4–12 FN (Ferrite Number) range required to resist hot cracking in multi-pass stainless TIG welds.\u003c\/p\u003e\n\n\u003ch2\u003eAWS Classification, Specifications \u0026amp; Mechanical Properties\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS Classification:\u003c\/strong\u003e ER308 per AWS A5.9\/A5.9M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 0.08% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChromium:\u003c\/strong\u003e 19.5–22.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNickel:\u003c\/strong\u003e 9.0–11.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManganese:\u003c\/strong\u003e 1.0–2.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon:\u003c\/strong\u003e 0.30–0.65%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhosphorus:\u003c\/strong\u003e 0.03% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSulfur:\u003c\/strong\u003e 0.03% max\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (this SKU):\u003c\/strong\u003e .035 in (0.9 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod length:\u003c\/strong\u003e 36 in (914 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 10 lb box\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTensile Strength (as-welded):\u003c\/strong\u003e ≥85,000 psi (586 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYield Strength (0.2% offset):\u003c\/strong\u003e ≥55,000 psi (379 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElongation:\u003c\/strong\u003e ≥35%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFerrite Number:\u003c\/strong\u003e 4–12 FN typical (controls hot cracking resistance)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBest Applications for Harris ER308 TIG Rod\u003c\/h2\u003e\n\u003cp\u003eHarris ER308 .035 in TIG rod is the standard choice for general-purpose stainless steel TIG welding across a wide range of industries:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood and Beverage Processing Equipment:\u003c\/strong\u003e Tanks, piping manifolds, hoppers, conveyors, and washdown tables fabricated from 304 or 304L stainless sheet and plate. ER308 TIG welds are smooth, slag-free, and easily passivated to meet FDA 3-A sanitary standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical and Biotech:\u003c\/strong\u003e Bioreactor vessels, clean-room piping, and filter housings in 304L stainless where full-penetration TIG root passes are required for sanitary weld quality inspection under ASME BPE (Bioprocessing Equipment) standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Process Piping:\u003c\/strong\u003e Small-diameter 304 SS instrumentation tubing and process lines where the .035 in rod is ideal for root passes and fill passes with controlled heat input on wall thicknesses below 0.120 in.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArchitectural Stainless Steel:\u003c\/strong\u003e Handrails, column covers, sculptures, and decorative panels in 304 stainless where a bright, uniform bead finish is visible in the final installation and aesthetic quality is as important as structural integrity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommercial Kitchen Equipment:\u003c\/strong\u003e Sinks, countertops, range hoods, and food-contact surfaces requiring durable, corrosion-resistant TIG welds that can be polished to a #4 or #8 mirror finish without weld bead inconsistency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHVAC and Refrigeration Stainless Piping:\u003c\/strong\u003e Refrigerant-carrying 304 stainless tubing systems where TIG's clean, flux-free process is preferred over MIG to avoid flux residue in the refrigerant circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to TIG Weld with Harris ER308 .035 in Rod — Settings, Gas \u0026amp; Technique\u003c\/h2\u003e\n\u003ch3\u003eMachine Setup and Parameters\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess:\u003c\/strong\u003e GTAW (TIG), DCEN (DC Electrode Negative)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTungsten:\u003c\/strong\u003e 2% ceriated (grey) or 2% lanthanated (gold\/black) — grind to a sharp taper for DCEN stainless work. Do not use pure tungsten (AC) for steel TIG.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage by base metal thickness:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e16 ga (0.060 in): 40–65 A\u003c\/li\u003e\n      \u003cli\u003e14 ga (0.075 in): 55–80 A\u003c\/li\u003e\n      \u003cli\u003e12 ga (0.105 in): 70–100 A\u003c\/li\u003e\n      \u003cli\u003e11 ga (0.120 in): 80–115 A\u003c\/li\u003e\n      \u003cli\u003e3\/16 in: 100–150 A\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCTWD (tungsten to work):\u003c\/strong\u003e 3\/16–5\/16 in (5–8 mm) for fine work with .035 in rod. Keep arc length short to minimize heat input and prevent the arc from wandering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShielding Gas\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary:\u003c\/strong\u003e 100% Argon at 12–20 CFH. Argon is standard for stainless TIG and produces bright, clean beads with minimal oxidation tint on the bead and adjacent HAZ.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelium blends:\u003c\/strong\u003e 25–75% He \/ balance Ar for thicker sections requiring increased travel speed. Helium raises heat input without increasing current, enabling faster travel on 3\/16 in and thicker material.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack-purging:\u003c\/strong\u003e On full-penetration root passes in pipe and tubing, back-purge with 100% Argon at 2–5 CFH. Failure to back-purge on stainless causes oxidized \"sugar\" on the root ID, which is a crevice-corrosion initiation site and a defect requiring excavation and repair.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnique for .035 in Rod\u003c\/h3\u003e\n\u003cp\u003eThe .035 in rod diameter requires consistent, light feeding into the leading edge of the puddle. Over-feeding a small-diameter rod causes the rod to ball up, contaminate the tungsten, and produce an irregular bead profile. Maintain a constant rod feed angle of 15–20° and a torch work angle of 75–80°. On thin stainless sheet (16–14 ga), use a backing bar (copper or stainless) to absorb heat and prevent distortion. Watch the heat-tint color behind the weld — a straw or light golden color indicates well-controlled heat input; dark blue or gray-black indicates excess heat or inadequate gas coverage and impending corrosion issues.\u003c\/p\u003e\n\n\u003ch2\u003eStorage and Handling of Harris ER308 TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eStore in original sealed box in a clean, dry environment. Stainless TIG rod picks up surface oxides in humid conditions, leading to bead discoloration and increased arc instability.\u003c\/li\u003e\n  \u003cli\u003eHandle rods with clean gloves or a clean cloth only — skin oils on .035 in rod are proportionally more significant relative to the rod's small cross-section and will cause contamination streaks visible in the final weld bead.\u003c\/li\u003e\n  \u003cli\u003eKeep rod dedicated to stainless work. Do not contaminate ER308 rod with carbon steel surfaces, tooling, or fixtures — iron particles on stainless filler metal embed in the weld and create rust spots that violate corrosion specifications.\u003c\/li\u003e\n  \u003cli\u003eInspect rods for surface tarnish or discoloration before use. Bright, silver-white surface indicates proper storage. Yellowing or bronzing indicates surface oxidation — rods in this condition should not be used for critical stainless welds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines and Base Metals\u003c\/h2\u003e\n\u003cp\u003eHarris ER308 .035 in TIG rod is compatible with any DC TIG welding machine. Recommended Lincoln Electric platforms:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLincoln Precision TIG 225 and 275 (DCEN mode)\u003c\/li\u003e\n  \u003cli\u003eLincoln Square Wave TIG 200 (DCEN mode for stainless)\u003c\/li\u003e\n  \u003cli\u003eLincoln Dynasty 200 DX and 280 DX (precision DCEN for thin stainless)\u003c\/li\u003e\n  \u003cli\u003eLincoln PTA-17 and PTA-17V TIG torches with Pyrex gas lens cups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary base metals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI 304 and 304L austenitic stainless steel (all product forms)\u003c\/li\u003e\n  \u003cli\u003eASTM A240 Type 304\/304L plate and sheet\u003c\/li\u003e\n  \u003cli\u003eASTM A312 Type TP304\/304L pipe\u003c\/li\u003e\n  \u003cli\u003eASTM A276 Type 304 bar and shapes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary base metals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e301 stainless (lower Cr\/Ni; ER308 provides adequate corrosion resistance)\u003c\/li\u003e\n  \u003cli\u003e302 stainless (ER308 is the standard filler per AWS A5.9 selection table)\u003c\/li\u003e\n  \u003cli\u003e308 and 308L stainless (direct composition match)\u003c\/li\u003e\n  \u003cli\u003eCF-8 and CF-8M stainless castings (302\/304 equivalent cast grades)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions — Harris 308 Stainless Steel TIG Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the difference between ER308 and ER308L TIG rod?\u003c\/strong\u003e\u003cbr\u003e\nA: ER308 has up to 0.08% carbon; ER308L has a maximum of 0.03% carbon. The lower carbon in ER308L reduces sensitization (chromium carbide precipitation at grain boundaries) during welding and in service at elevated temperatures between 800–1,650 °F. For most room-temperature applications, ER308 is acceptable. For welding 304L base metal, for applications involving frequent high-temperature cycles, or when post-weld sensitization is a corrosion concern, use ER308L. Harris offers both grades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I use ER308 to weld 316 stainless steel?\u003c\/strong\u003e\u003cbr\u003e\nA: ER308 can be used on 316 stainless in applications where the additional corrosion resistance of molybdenum is not required by the engineering specification. However, the ER308 deposit will not contain molybdenum and will have lower pitting resistance than a 316L deposit in chloride environments. For full corrosion matching on 316 and 316L base metals, use ER316L rod.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Why does my stainless TIG weld turn blue or gold color?\u003c\/strong\u003e\u003cbr\u003e\nA: Oxidation tint (heat discoloration) on the weld bead or adjacent HAZ is caused by chromium oxide forming at elevated temperature in the presence of atmospheric oxygen. Light straw\/gold is minor surface oxidation. Dark blue or black indicates severe oxidation and a significant loss of corrosion resistance in the HAZ. Causes: insufficient shielding gas flow, gas coverage disrupted by drafts, gas hose leaks, or post-weld oxidation before the metal cools below 800 °F. Always post-flow the gas for 8–12 seconds after extinguishing the arc on stainless TIG.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: How do I prevent sensitization in 304 stainless TIG welds?\u003c\/strong\u003e\u003cbr\u003e\nA: Sensitization occurs when chromium carbides precipitate at grain boundaries during slow cooling through the 800–1,650 °F range. To minimize it: (1) use ER308L rather than ER308 filler; (2) maintain low heat input — keep interpass temperature below 300–350 °F; (3) use narrow stringer passes rather than wide weaves; (4) ensure post-weld solution anneal if the application is corrosion-critical. The .035 in small-diameter rod helps control heat input by limiting the maximum amperage practical for the rod size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What is Ferrite Number (FN) and why does it matter for stainless TIG welds?\u003c\/strong\u003e\u003cbr\u003e\nA: Ferrite Number is a measure of the magnetic delta ferrite phase in an austenitic stainless weld deposit. AWS D1.6 and most stainless WPS specifications require 3–15 FN. Below 3 FN, the weld is susceptible to hot cracking during solidification. Above 15 FN, corrosion resistance and ductility may be compromised. Harris ER308 is formulated to deposit within the 4–12 FN range, providing a safety margin against both hot cracking and over-ferritization.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: Do I need to back-purge when TIG welding 304 stainless pipe with ER308?\u003c\/strong\u003e\u003cbr\u003e\nA: For full-penetration butt welds in 304 stainless pipe, back-purging is strongly recommended to prevent oxidation of the root ID (the \"sugar\" condition). A back-purge of 100% Argon at 2–5 CFH, maintained from tack welding through the entire root pass plus sufficient time for the root to cool below 600 °F, will produce a bright, oxide-free root bead. Many food-grade, pharmaceutical, and chemical piping specifications mandate back-purging and root bead visual inspection as a hold point before fill and cap passes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: What's the best way to get a mirror-polish finish on a 308 TIG weld?\u003c\/strong\u003e\u003cbr\u003e\nA: For polishable cosmetic stainless welds: (1) use a tight, consistent bead with no undercut or overlap — the .035 in rod at controlled amperage produces a smooth, low-profile bead; (2) remove oxidation tint with a dedicated stainless wire brush immediately after welding; (3) grind with progressively finer grit stainless-dedicated grinding discs (80→120→180 grit); (4) blend with Scotch-Brite or non-woven abrasive belts (240→320 grit); (5) finish with a flap wheel or buffing compound to #4 or #8 mirror finish. Never use abrasives that have contacted carbon steel.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between ER308 and ER308L TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER308 has up to 0.08% carbon; ER308L has a maximum of 0.03% carbon. The lower carbon in ER308L reduces sensitization during welding and in service. For most room-temperature applications, ER308 is acceptable. For welding 304L base metal or applications involving frequent high-temperature cycles, use ER308L.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use ER308 to weld 316 stainless steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER308 can be used on 316 stainless in applications where molybdenum corrosion resistance is not required by the engineering specification. However, the ER308 deposit will not contain molybdenum and will have lower pitting resistance than a 316L deposit in chloride environments. For full corrosion matching on 316\/316L base metals, use ER316L rod.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does my stainless TIG weld turn blue or gold color?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Oxidation tint is caused by chromium oxide forming at elevated temperature in the presence of atmospheric oxygen. Causes: insufficient shielding gas flow, gas coverage disrupted by drafts, gas hose leaks, or post-weld oxidation before the metal cools below 800 °F. Always post-flow the gas for 8–12 seconds after extinguishing the arc on stainless TIG.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I prevent sensitization in 304 stainless TIG welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"To minimize sensitization: (1) use ER308L rather than ER308 filler; (2) maintain low heat input and keep interpass temperature below 300–350 °F; (3) use narrow stringer passes rather than wide weaves; (4) ensure post-weld solution anneal if the application is corrosion-critical.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is Ferrite Number (FN) and why does it matter for stainless TIG welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Ferrite Number is a measure of the magnetic delta ferrite phase in an austenitic stainless weld deposit. AWS D1.6 requires 3–15 FN. Below 3 FN, the weld is susceptible to hot cracking. Above 15 FN, corrosion resistance and ductility may be compromised. Harris ER308 is formulated to deposit within the 4–12 FN range.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to back-purge when TIG welding 304 stainless pipe with ER308?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For full-penetration butt welds in 304 stainless pipe, back-purging is strongly recommended to prevent oxidation of the root ID. A back-purge of 100% Argon at 2–5 CFH, maintained through the entire root pass, will produce a bright, oxide-free root bead. Many food-grade and pharmaceutical piping specifications mandate back-purging.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What's the best way to get a mirror-polish finish on a 308 TIG weld?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For polishable cosmetic stainless welds: (1) use a tight, consistent bead with the .035 in rod at controlled amperage; (2) remove oxidation tint with a dedicated stainless wire brush; (3) grind with progressively finer grit stainless-dedicated discs (80→120→180 grit); (4) blend with non-woven abrasive belts; (5) finish with a flap wheel or buffing compound to desired finish. Never use abrasives that have contacted carbon steel.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258838151319,"sku":"0308TF0","price":140.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-308-stainless-steel-tig-gtaw-welding-rod-035-36in-10lb-box-0308tf0-harris-1.jpg?v=1753396586"},{"product_id":"harris-316l-stainless-tig-gtaw-welding-rod-3-32-x-36-x-10-316lt50","title":"Harris 316L Stainless TIG GTAW Welding Rod 3\/32 X 36 X 10# - 316LT50","description":"\u003ch2\u003eWhat Is Harris 316L Stainless TIG Welding Rod?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris 316L Stainless TIG GTAW Welding Rod\u003c\/strong\u003e (part number 316LT50) is a low-carbon, molybdenum-bearing austenitic stainless steel filler metal classified \u003cstrong\u003eER316L per AWS A5.9\/A5.9M\u003c\/strong\u003e. Available in 3\/32 in (2.4 mm) diameter, 36-inch cut length, 10 lb box, this rod is specifically engineered for GTAW (TIG) welding of 316, 316L, and 317L stainless steel base metals — grades widely used in marine, pharmaceutical, chemical, and food processing applications that demand superior resistance to pitting and crevice corrosion. The addition of 2–3% molybdenum to the 18% Cr \/ 12% Ni austenitic matrix provides the elevated resistance to chloride-induced pitting that distinguishes 316L from standard 304 or 308 grades. The \"L\" (low-carbon) designation limits carbon to ≤0.03%, preventing sensitization and intergranular corrosion even in heat-affected zones subject to multiple thermal cycles. Harris Products Group, a Lincoln Electric company, produces this rod under rigorous lot chemistry control with certified C\/C documentation traceable to melt heat numbers.\u003c\/p\u003e\n\u003cp\u003eThe 3\/32 in diameter is the primary production size for medium-weight stainless applications: Schedule 40 pipe in the 1–4 in NPS range, structural 316L plate up to 1\/2 in, pressure vessel fabrication, and heavy-duty commercial kitchen and dairy equipment. The larger diameter provides higher deposition rates than 1\/16 in rod while maintaining the precise arc control characteristic of TIG welding.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — ER316L\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER316L (AWS A5.9\/A5.9M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003e316LT50\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3\/32 in (2.38 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon Content (max)\u003c\/td\u003e\n\u003ctd\u003e0.03% (low-carbon \"L\" grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e18.0–20.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNickel Content\u003c\/td\u003e\n\u003ctd\u003e11.0–14.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMolybdenum\u003c\/td\u003e\n\u003ctd\u003e2.0–3.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003e1.0–2.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon\u003c\/td\u003e\n\u003ctd\u003e0.30–0.65%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥75,000 psi (517 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eYield Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥54,000 psi (372 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥35%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEN (Direct Current Electrode Negative)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon or Ar\/He blends\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBase Metals\u003c\/td\u003e\n\u003ctd\u003e316, 316L, 316H, 317, 317L stainless steels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for ER316L TIG Welding Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Fabrication:\u003c\/strong\u003e Boat hardware, propeller shafts, through-hulls, ladders, handrails, and deck fittings fabricated from 316L stainless require ER316L filler to maintain the molybdenum content in the weld metal that resists seawater pitting and crevice corrosion at fastener holes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical \u0026amp; Biotech:\u003c\/strong\u003e Vessels, piping, and heat exchangers handling saline solutions, cleaning agents, or fermentation media where chloride-induced pitting must be avoided. 316L with ER316L filler is the minimum specification for most BPE (Bio-Processing Equipment) applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Processing:\u003c\/strong\u003e Acetic acid, sulfuric acid (dilute), phosphoric acid, and chloride-containing process streams in chemical plants. The molybdenum addition provides broad-spectrum resistance to pitting from halide ions at temperatures up to 140°F (60°C).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood \u0026amp; Dairy:\u003c\/strong\u003e Cheese vats, brewery fermentation tanks, pasteurizer heat exchangers, and high-chloride CIP (clean-in-place) systems. 316L base metal with matching ER316L filler is often specified where 304 does not provide adequate corrosion life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Vessel Fabrication:\u003c\/strong\u003e ASME Section VIII 316L vessels handling aggressive media; ER316L is the SFA-5.9 classification filler required by most 316L vessel WPS documents.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePulp \u0026amp; Paper:\u003c\/strong\u003e Digester vessels, bleach plant piping, and sulfite liquor storage tanks — aggressive chloride and acid environments where 316L is the standard material of construction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris ER316L TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eWelding with 3\/32 in ER316L TIG rod follows the same general GTAW principles as ER308L with some considerations specific to the molybdenum-bearing alloy:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInterpass Temperature Control:\u003c\/strong\u003e Limit interpass temperature to 300–350°F (150–177°C) maximum. This is more critical for 316L than mild steel because: (1) high heat input increases distortion on austenitic stainless, and (2) excessive interpass temperatures can promote carbide precipitation even in L-grade material if thermal cycles are extreme. Use an infrared thermometer or temperature-indicating sticks between passes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmperage for 3\/32 in Rod:\u003c\/strong\u003e Run at 120–200 amps DCEN depending on material thickness. For 3\/16 in 316L plate, 130–155 A with a moderate travel speed (4–5 in\/min) provides good penetration and bead profile. For 1\/4–3\/8 in plate or heavy pipe wall, 175–200 A with multiple passes — keep each pass narrow to limit heat input per pass.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTungsten:\u003c\/strong\u003e Use 3\/32 in or 1\/8 in 2% ceriated or lanthanated tungsten, sharpened to a 30° included-angle point. For high-amperage heavy-section work, 1\/8 in tungsten is recommended for arc stability above 175 A.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBack-Purging:\u003c\/strong\u003e For pipe root passes and vessel penetrations, back-purge the weld interior with 100% argon at 5–10 CFH. 316L root-side oxidation (sugaring) is more detrimental than on 304 in aggressive service because the oxidized zone is depleted of both chromium AND molybdenum.\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaterial \/ Position\u003c\/th\u003e\n\u003cth\u003eAmperage\u003c\/th\u003e\n\u003cth\u003eTungsten Size\u003c\/th\u003e\n\u003cth\u003eGas Flow\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e3\/16 in plate, flat\u003c\/td\u003e\n\u003ctd\u003e130–155 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 in ceriated\u003c\/td\u003e\n\u003ctd\u003e20 CFH Ar\u003c\/td\u003e\n\u003ctd\u003eSingle pass root, 1–2 fill\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1\/4 in plate, flat\u003c\/td\u003e\n\u003ctd\u003e160–185 A\u003c\/td\u003e\n\u003ctd\u003e3\/32–1\/8 in ceriated\u003c\/td\u003e\n\u003ctd\u003e20–22 CFH Ar\u003c\/td\u003e\n\u003ctd\u003eMulti-pass, cool between passes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSch. 40 pipe, 2 in NPS\u003c\/td\u003e\n\u003ctd\u003e110–140 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e18–20 CFH Ar\u003c\/td\u003e\n\u003ctd\u003eBack-purge root, 5 CFH Ar\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHeavy plate \u0026gt;3\/8 in\u003c\/td\u003e\n\u003ctd\u003e180–210 A\u003c\/td\u003e\n\u003ctd\u003e1\/8 ceriated\u003c\/td\u003e\n\u003ctd\u003e22–25 CFH Ar\u003c\/td\u003e\n\u003ctd\u003ePreheat to 150°F, back-purge fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for ER316L TIG Welding Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeparate Stainless Storage Area:\u003c\/strong\u003e Store ER316L rods in a dedicated stainless consumables cabinet away from mild steel rods and carbon steel grinding dust. Iron contamination creates rust on 316L welds and compromises the corrosion resistance the alloy is selected for.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature \u0026amp; Humidity:\u003c\/strong\u003e 40–120°F storage temperature with relative humidity below 50%. Unlike hydrogen-sensitive low-hydrogen stick electrodes, stainless TIG rods are not moisture-sensitive in the same degree, but high-humidity environments can cause condensation on cold rod surfaces, leading to porosity at arc start.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLot Traceability:\u003c\/strong\u003e For ASME code work, retain the certificate of conformance from each 10 lb box. The C\/C documents the heat chemistry, ferrite number (FN), and mechanical properties required for PQR\/WPS documentation. Keep the box label until the lot is used.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFerrite Number:\u003c\/strong\u003e ER316L weld metal typically deposits at 5–10 FN (Ferrite Number) as measured by the Schaeffler diagram. Adequate ferrite content prevents hot cracking (solidification cracking) in fully austenitic weld metal. Verify FN on C\/C for critical pressure-containing applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-Use Inspection:\u003c\/strong\u003e Check rods for kinks, surface gouges, or oxidation before use. Minor surface tarnish may be cleaned with a stainless wire brush dedicated to stainless work. Heavily pitted or corroded rods should be discarded — corrosion products will introduce contamination into the weld pool.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals for Harris ER316L\u003c\/h2\u003e\n\u003cp\u003eAny commercially available DC TIG machine is compatible with Harris ER316L 3\/32 in rod. For production stainless fabrication, machines with pulse capability are strongly preferred:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200 (K5126-1):\u003c\/strong\u003e Suitable for lighter 316L applications up to 3\/16 in. Pulse control helps manage heat input on thin-to-medium gauge 316L sheet and tube.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Precision TIG 225 \/ 275:\u003c\/strong\u003e The 275 A capacity handles heavier-section 316L plate and thick-wall pipe with 3\/32 in ER316L at high amperage without arc instability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Aspect 375 \/ Invertec TIG 300\/300:\u003c\/strong\u003e High-duty-cycle machines for production 316L vessel and piping fabrication. Full programmable pulse provides precision heat input management for multi-pass heavy-section work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003eER316L Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 316 \/ 316L\u003c\/td\u003e\n\u003ctd\u003e✅ Primary match\u003c\/td\u003e\n\u003ctd\u003eComposition match including molybdenum — standard selection\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 316H\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eUse ER316H or ER317 for high-temperature (above 800°F) service\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 317 \/ 317L\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eER317L preferred for direct 317L match; ER316L acceptable for general service\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 304 \/ 304L\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable (overalloyed)\u003c\/td\u003e\n\u003ctd\u003eER316L on 304 base is acceptable and provides additional corrosion margin\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 316 to 304 dissimilar\u003c\/td\u003e\n\u003ctd\u003e✅ Excellent\u003c\/td\u003e\n\u003ctd\u003eER316L bridges both compositions; excellent for mixed-grade assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e316L to carbon steel dissimilar\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eUse ER309L for stainless-to-carbon dissimilar joints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\n\u003ch2\u003eTechnical Reference — ER316L Stainless TIG Rod Metallurgy, Code Use \u0026amp; Selection Guide\u003c\/h2\u003e\n\u003cp\u003eER316L is the premium austenitic stainless TIG classification for corrosion-critical applications. The addition of 2.0–3.0% molybdenum (vs. 0% Mo in ER308L) provides a fundamentally different corrosion mechanism response that makes ER316L mandatory in specific industries.\u003c\/p\u003e\n\u003ch3\u003eWhy Molybdenum Matters — ER316L Corrosion Advantage\u003c\/h3\u003e\n\u003cp\u003eMolybdenum in the ER316L deposit stabilizes the passive film against attack by chloride ions and other halides. The mechanism: Mo⁴⁺ ions in the passive layer act as \"chloride sponges,\" adsorbing Cl⁻ before it can initiate pitting. This effect is quantified in PREN (Pitting Resistance Equivalent Number): PREN = %Cr + 3.3×%Mo + 16×%N. ER316L PREN ≈ 26 vs ER308L PREN ≈ 18 — approximately 44% better pitting resistance.\u003c\/p\u003e\n\u003ch3\u003eER316L AWS A5.9 Classification\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbon: ≤0.03% (L-grade, sensitization resistance)\u003c\/li\u003e\n  \u003cli\u003eChromium: 18.0–20.0%\u003c\/li\u003e\n  \u003cli\u003eNickel: 11.0–14.0%\u003c\/li\u003e\n  \u003cli\u003eMolybdenum: 2.0–3.0% (pitting\/crevice corrosion resistance)\u003c\/li\u003e\n  \u003cli\u003eManganese: 1.0–2.5%\u003c\/li\u003e\n  \u003cli\u003eSilicon: 0.30–0.65%\u003c\/li\u003e\n  \u003cli\u003eFerrite Number (as-welded): 4–12 FN\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIndustry Applications Where ER316L is Mandatory\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine environments\u003c\/strong\u003e: Saltwater splash zones, boat hardware, marine exhaust, offshore platform handrails. Cl⁻ concentration in seawater (19,000 ppm) requires Mo-bearing stainless for pitting resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical (USP Class VI \/ cGMP)\u003c\/strong\u003e: Bioprocessing vessels, fermenters, product contact surfaces in drug manufacturing. FDA and ISPE guidelines specify 316L stainless for product-contact components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical processing\u003c\/strong\u003e: Sulfuric acid dilute solutions, acetic acid, formic acid, and organic acid service above concentrations where 304\/308L sensitizes. ER316L required per NACE\/API recommendations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoastal architectural stainless\u003c\/strong\u003e: Exterior cladding, handrails, and structural stainless in ocean-adjacent locations. Many marine architects specify 316L stainless as standard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eER316L vs ER316 — When to Use Each\u003c\/h3\u003e\n\u003cp\u003eER316L (low carbon, ≤0.03% C) is the standard for virtually all welding of 316L and 316 base metals where the weld will see: (a) sustained temperatures 800–1500°F in service, (b) post-weld exposure to corrosive media without full solution anneal, or (c) code requirements (ASME B31.3, FDA, etc.). ER316 (standard carbon, ≤0.08% C) is only preferred when maximum weld metal strength is required in high-temperature structural applications that will be fully annealed after welding. For 99% of fabrication and repair welding on 316\/316L base metal, ER316L is the correct choice.\u003c\/p\u003e\n\u003ch3\u003eASME P-No. 8 Code Application\u003c\/h3\u003e\n\u003cp\u003eER316L satisfies ASME Section IX P-No. 8 Group 1 filler metal requirements for austenitic stainless pressure piping and vessels. AWS D1.6 pre-qualifies ER316L for Group A (austenitic stainless) structural welding. It is the standard filler in API 582 and ASME B31.3 Table A-1 for 316\/316L pressure piping construction.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs — Harris 316L Stainless TIG Welding Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What makes ER316L better than ER308L for marine applications?\u003c\/strong\u003e\u003cbr\u003eThe critical difference is molybdenum (Mo). ER316L contains 2–3% Mo, which raises the pitting resistance equivalent (PRE = %Cr + 3.3×%Mo + 16×%N) significantly versus ER308L which has no molybdenum. Chloride ions in seawater aggressively pit and crevice-corrode welds that lack sufficient molybdenum content. Marine hardware, boat fittings, and offshore structural components in 316L stainless should always be welded with matching ER316L — using ER308L in these applications produces weld zones with lower pitting resistance than the base metal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I use ER316L on 304 stainless?\u003c\/strong\u003e\u003cbr\u003eYes, ER316L can be used on 304 or 304L base metal and is considered an over-alloyed approach. The additional molybdenum provides extra corrosion resistance margin, which is beneficial in borderline chloride environments. The cost premium of ER316L over ER308L is the main consideration; for standard 304 applications in non-chloride service, ER308L is more economical and equally adequate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What is ferrite number (FN) and why does it matter for 316L welds?\u003c\/strong\u003e\u003cbr\u003eFerrite Number (FN) is a measure of the small amount of ferrite microstructure present in an otherwise fully austenitic weld deposit. FN 3–10 is typical for ER316L weld metal. Adequate ferrite prevents solidification hot cracking — a defect mode in fully austenitic welds where the last liquid in the weld pool solidifies under tensile stress. Harris ER316L is formulated to deposit in the correct FN range. The FN is documented on the certificate of conformance and is required for ASME pressure vessel code qualification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What diameter ER316L TIG rod should I use for pipe welding?\u003c\/strong\u003e\u003cbr\u003eFor Schedule 10S–40S pipe in 1–2 in NPS (wall 0.083–0.154 in), 1\/16 in diameter is preferred for root passes; 3\/32 in for fill and cap passes. The 3\/32 in rod (316LT50) is the standard choice for medium-wall pipe and heavy plate fill passes. For large-diameter heavy-wall pipe (4 in NPS and above), 3\/32 in or even 1\/8 in diameter may be used for cap passes at higher amperage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Does ER316L require preheating before welding?\u003c\/strong\u003e\u003cbr\u003eGenerally, no. Austenitic stainless steels including 316L do not require preheat. In fact, preheating is generally discouraged because elevated interpass temperatures increase sensitization risk and distortion. However, if the base metal is extremely cold (below 40°F\/4°C), allow it to reach shop temperature (above 50°F) before welding to prevent moisture condensation that causes porosity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: Is the Harris 316L rod certified to ASME standards?\u003c\/strong\u003e\u003cbr\u003eYes. Harris ER316L (316LT50) conforms to AWS A5.9\/A5.9M, which is adopted as SFA-5.9 in the ASME Boiler and Pressure Vessel Code Section II, Part C. The filler is suitable for qualifying welding procedures under ASME Section IX and for production welding on ASME Section I, Section VIII, and B31.3 piping systems. Each 10 lb box includes a certificate of conformance traceable to a specific melt heat number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: What is the difference between ER316L and ER316LSi?\u003c\/strong\u003e\u003cbr\u003eER316LSi adds silicon (Si) at a higher level (0.65–1.0%) versus ER316L (0.30–0.65%). The higher silicon in LSi improves wetting and bead shape in MIG (GMAW) welding. For TIG welding, the performance difference between ER316L and ER316LSi is minimal — either is suitable for TIG applications. ER316L (without the Si suffix) is the standard TIG rod and is widely stocked; ER316LSi is more commonly specified for MIG wire applications where weld pool fluidity and bead appearance are important.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What makes ER316L better than ER308L for marine applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER316L contains 2-3% molybdenum, which significantly raises pitting resistance versus ER308L which has no molybdenum. Chloride ions in seawater aggressively pit welds lacking molybdenum. Marine hardware in 316L stainless should always be welded with ER316L.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use ER316L on 304 stainless?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, ER316L can be used on 304 or 304L base metal as an over-alloyed approach, providing extra corrosion resistance. For standard 304 applications in non-chloride service, ER308L is more economical and equally adequate.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is ferrite number and why does it matter for 316L welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Ferrite Number (FN) measures the small amount of ferrite in an austenitic weld deposit. FN 3-10 is typical for ER316L. Adequate ferrite prevents solidification hot cracking. The FN is documented on the certificate of conformance and required for ASME pressure vessel code qualification.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What diameter ER316L TIG rod should I use for pipe welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For Schedule 10S-40S pipe in 1-2 in NPS, use 1\/16 in for root passes and 3\/32 in for fill and cap passes. The 3\/32 in rod is standard for medium-wall pipe and heavy plate fill passes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does ER316L require preheating before welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Generally no. Austenitic stainless steels do not require preheat and elevated interpass temperatures are discouraged as they increase sensitization risk. Allow cold base metal to reach shop temperature above 50 degrees F to prevent moisture condensation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is Harris ER316L rod certified to ASME standards?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Harris ER316L conforms to AWS A5.9\/A5.9M (SFA-5.9 in ASME). It is suitable for ASME Section IX WPS qualification and production welding on ASME Section I, VIII, and B31.3 piping. Each box includes a certificate of conformance traceable to a melt heat number.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between ER316L and ER316LSi?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER316LSi adds higher silicon (0.65-1.0%) versus ER316L (0.30-0.65%). Higher silicon improves wetting in MIG welding. For TIG welding, the performance difference is minimal. ER316L is the standard TIG rod; ER316LSi is more commonly specified for MIG wire applications.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258838544535,"sku":"316LT50","price":128.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-316l-stainless-tig-gtaw-welding-rod-332-x-36-x-10-316lt50-harris-1.jpg?v=1753396469"},{"product_id":"harris-308-stainless-steel-tig-gtaw-welding-rod-1-16-36in-10lb-box-0308t30","title":"Harris 308 Stainless Steel TIG GTAW Welding Rod 1\/16 36in. 10LB Box- 0308T30","description":"\u003ch2\u003eWhat Is Harris 308 Stainless Steel TIG Welding Rod?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris 308 Stainless Steel TIG GTAW Welding Rod\u003c\/strong\u003e (part number 0308T30) is an austenitic stainless steel filler metal classified \u003cstrong\u003eER308 per AWS A5.9\/A5.9M\u003c\/strong\u003e, offered in a 1\/16 in (1.6 mm) diameter, 36-inch cut length, 10 lb box format. ER308 provides a nominal 18–20% chromium and 9–11% nickel composition that matches the chemistry of 304 and 308 stainless steel base metals — the workhorse grades of fabricated stainless equipment. Harris Products Group, a Lincoln Electric company, manufactures this rod with consistent lot chemistry and mechanical properties, providing certified C\/C documentation suitable for ASME and AWS code applications. The 1\/16 in diameter is the most versatile stainless TIG rod diameter, bridging light-gauge sheet work (10–14 gauge) and medium-wall piping and plate applications up to 3\/8 in with a single filler size, making it the staple diameter for production TIG shops and job shops alike.\u003c\/p\u003e\n\u003cp\u003eCompared to ER308L, standard ER308 allows slightly higher carbon content (≤0.08% versus ≤0.03%), which can provide marginally higher tensile strength in the as-welded condition but reduces resistance to sensitization (intergranular corrosion) if the weld zone is subsequently heated into the sensitization temperature range (800–1500°F). For most shop-temperature service applications and where welds are not re-heated, ER308 is fully acceptable. For applications requiring maximum corrosion resistance, particularly in chemical, food-grade, or post-weld heat-treated assemblies, ER308L is the preferred choice. Many welders stock both and select based on the engineering specification or drawing note.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — ER308 Stainless\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER308 (AWS A5.9\/A5.9M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003e0308T30\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1\/16 in (1.6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon Content (max)\u003c\/td\u003e\n\u003ctd\u003e0.08%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e19.5–22.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNickel Content\u003c\/td\u003e\n\u003ctd\u003e9.0–11.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003e1.0–2.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon\u003c\/td\u003e\n\u003ctd\u003e0.30–0.65%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥80,000 psi (551 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eYield Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥57,000 psi (393 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥35%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEN (Direct Current Electrode Negative)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon or Ar\/He blends\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBase Metals\u003c\/td\u003e\n\u003ctd\u003e304, 308, 321, 347 stainless steels\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eVendor\u003c\/td\u003e\n\u003ctd\u003eHarris Products Group (Lincoln Electric company)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for ER308 1\/16 in TIG Welding Rod\u003c\/h2\u003e\n\u003cp\u003eThe 1\/16 in diameter Harris ER308 TIG rod is the go-to size across a wide range of stainless welding applications:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructural Stainless Fabrication:\u003c\/strong\u003e Angle brackets, frames, support structures, and enclosures fabricated from 10–14 gauge 304 stainless sheet use the 1\/16 in diameter for a balanced deposition rate and manageable filler consumption per joint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStainless Pipe \u0026amp; Tube Work:\u003c\/strong\u003e Schedule 10S and Schedule 40S pipe in 1\/2 in to 2 in NPS sizes, as well as instrumentation tubing, are routinely welded with 1\/16 in ER308 rod. The diameter provides adequate fill on root and cap passes without over-depositing on thin-wall material.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommercial Kitchen Equipment:\u003c\/strong\u003e Sinks, countertops, dishwasher frames, prep tables, and storage racks in 304 stainless. Production TIG welding in commercial kitchen fabrication shops most commonly stocks 1\/16 in ER308 as the primary filler.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExhaust Manifolds \u0026amp; Automotive Stainless:\u003c\/strong\u003e Performance exhaust systems and headers in 304 stainless use ER308 rod for smooth TIG welds with good appearance and adequate strength at moderate exhaust temperatures (below 1500°F continuous).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRepair \u0026amp; Maintenance:\u003c\/strong\u003e Field repair of 304 stainless tanks, vessels, and enclosures; weld-in patches on corroded sections; filling pin holes on investment castings. The 1\/16 in diameter is versatile enough for both fill passes and sealing passes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Treatment \u0026amp; Municipal Infrastructure:\u003c\/strong\u003e Stainless pipe fittings, valve bodies, and manifolds in potable water treatment systems; the large 10 lb box supports extended production runs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris ER308 TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eSetting up correctly for stainless TIG welding with 1\/16 in ER308 rod delivers clean, consistent beads with minimal spatter and excellent fusion:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolarity:\u003c\/strong\u003e DCEN (Direct Current Electrode Negative). Set your TIG welder to DC mode, electrode negative. Do not use AC — AC is for aluminum TIG with pure tungsten. DCEN provides a focused, penetrating arc ideal for stainless.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmperage Range:\u003c\/strong\u003e 80–150 amps for most 10 gauge–3\/16 in stainless applications. Use a foot pedal for variable control. For 14 gauge sheet, start at 80–95 A and modulate down near tacks. For 3\/16 in plate, you can run 130–150 A with confident travel speed to prevent hot cracks from excessive heat input.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTungsten Electrode:\u003c\/strong\u003e Use 3\/32 in 2% ceriated or 2% lanthanated tungsten. Grind to a sharp point with the grinding marks running lengthwise along the electrode axis (not circumferentially). This promotes a stable, columnar arc. Keep a dedicated tungsten grinding wheel for stainless to prevent cross-contamination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGas Setup:\u003c\/strong\u003e 100% argon at 18–22 CFH through a gas lens cup (size 6 or 8 recommended). A gas lens diffuser provides laminar flow and superior shielding coverage compared to standard collet body assemblies — essential for bright, unoxidized stainless weld beads. For root passes on pipe, back-purge with 100% argon at 3–8 CFH to prevent sugaring on the inside surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParameter Table for ER308 1\/16 in:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaterial Thickness\u003c\/th\u003e\n\u003cth\u003eAmperage\u003c\/th\u003e\n\u003cth\u003eTungsten\u003c\/th\u003e\n\u003cth\u003eCup Size\u003c\/th\u003e\n\u003cth\u003eAr Flow CFH\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e14 gauge (0.078 in)\u003c\/td\u003e\n\u003ctd\u003e75–100 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e#6\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e12 gauge (0.109 in)\u003c\/td\u003e\n\u003ctd\u003e100–125 A\u003c\/td\u003e\n\u003ctd\u003e3\/32 ceriated\u003c\/td\u003e\n\u003ctd\u003e#6\u003c\/td\u003e\n\u003ctd\u003e18–20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e3\/16 in (0.188 in)\u003c\/td\u003e\n\u003ctd\u003e130–160 A\u003c\/td\u003e\n\u003ctd\u003e3\/32–1\/8 ceriated\u003c\/td\u003e\n\u003ctd\u003e#7–8\u003c\/td\u003e\n\u003ctd\u003e20–22\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1\/4 in plate\u003c\/td\u003e\n\u003ctd\u003e160–190 A\u003c\/td\u003e\n\u003ctd\u003e1\/8 ceriated\u003c\/td\u003e\n\u003ctd\u003e#8\u003c\/td\u003e\n\u003ctd\u003e22–25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTechnique Tips:\u003c\/strong\u003e Keep the tungsten 1\/8 in off the base metal; do not touch tungsten to weld pool. Feed rod at a low 10–15° angle to the weld pool, maintaining the rod tip inside the argon shielding cone at all times to prevent rod-tip oxidation. Move at a steady pace — stainless dissipates heat slowly and will build up, causing discoloration or carbide precipitation if travel slows. Allow each pass to cool to hand-warm (below 150°F) before adding the next pass on multi-pass welds.\u003c\/p\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for Harris ER308 TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDry Storage Required:\u003c\/strong\u003e Store 308 TIG rods in the original sealed box in a temperature-controlled location (40–120°F). Moisture on the rod surface causes porosity and erratic arc starts, especially on root passes where shielding is most critical.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStainless-Dedicated Storage:\u003c\/strong\u003e Keep stainless TIG rods completely separate from carbon steel or iron-containing materials. Even trace iron contamination causes rust spots that compromise weld corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle with Clean Gloves:\u003c\/strong\u003e Skin oils and chloride-containing perspiration on stainless filler rod can introduce chloride ions to weld metal — particularly problematic in marine and chemical service. Use nitrile or cotton gloves when handling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertificate of Conformance:\u003c\/strong\u003e Each 10 lb box of Harris 308 TIG rod is traceable to a specific melt heat number. Retain the C\/C documentation if welding to ASME, AWS, or other code requirements. The C\/C provides the chemistry and mechanical test data required for WPS and PQR qualification records.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShelf Life:\u003c\/strong\u003e Properly stored, stainless TIG rods have an indefinite shelf life. If rods develop surface discoloration from marginal storage conditions, inspect for pitting — superficial tarnish can typically be cleaned with stainless wire brush before use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals for Harris ER308\u003c\/h2\u003e\n\u003cp\u003eHarris ER308 1\/16 in TIG rod is compatible with any standard DC TIG welding machine:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200 (K5126-1):\u003c\/strong\u003e Compact AC\/DC TIG welder ideal for shop and light fabrication ER308 work. The pulse function helps manage heat on production stainless work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Invertec V155-S:\u003c\/strong\u003e Rugged DC-only TIG machine for maintenance and field stainless repair using ER308.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Precision TIG 225 \/ 275:\u003c\/strong\u003e Higher-amperage platforms for heavier plate and pipe work with ER308 rod in the 3\/16 in–1\/4 in thickness range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Base Metal Combinations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003eER308 Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 304 \/ 304H\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003eMost common stainless; ER308 and ER308L are both acceptable\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 308\u003c\/td\u003e\n\u003ctd\u003e✅ Direct match\u003c\/td\u003e\n\u003ctd\u003eChemistry matches — ideal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 321\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eFor non-elevated-temp service; use 347 rod for high-temp\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 347\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eAcceptable for general service applications\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 302\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eSlightly higher carbon base; ER308 works for non-sensitization-critical service\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAISI 316 (general service)\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eER308 acceptable; ER316L preferred in aggressive environments\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon steel to stainless (dissimilar)\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eUse ER309L for carbon-to-stainless dissimilar joints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\n\u003ch2\u003eTechnical Reference — Harris ER308 Stainless TIG Rod Selection \u0026amp; Metallurgy\u003c\/h2\u003e\n\u003cp\u003eER308 is the foundational austenitic stainless TIG classification, and selecting between ER308 and its variants requires understanding the base metal composition, service conditions, and code requirements of the application.\u003c\/p\u003e\n\u003ch3\u003eAWS Classification Context — ER308 Under AWS A5.9\u003c\/h3\u003e\n\u003cp\u003eER308 per AWS A5.9\/A5.9M specifies: C ≤0.08%, Cr 19.5–22.0%, Ni 9.0–11.0%, Mo ≤0.75%, Mn 1.0–2.5%, Si 0.30–0.65%. The 1\/16 in (1.6 mm) diameter covers the broadest thickness range: thin-sheet automotive trim to medium-wall tubing and pipe in a single diameter.\u003c\/p\u003e\n\u003ch3\u003eER308 Base Metal Compatibility Matrix\u003c\/h3\u003e\n\u003cp\u003eER308 is AWS-approved for welding the following wrought and cast austenitic grades:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI 301, 302, 304, 305 — matching Cr-Ni chemistry; standard structural and fabrication use\u003c\/li\u003e\n  \u003cli\u003eAISI 308 plate and pipe — matching classification by definition\u003c\/li\u003e\n  \u003cli\u003eAISI 347 (Nb-stabilized) — ER308 acceptable for most welding procedures; ER347 for critical high-temp service\u003c\/li\u003e\n  \u003cli\u003eAISI 321 (Ti-stabilized) — ER308 acceptable for general welding; ER321 or ER347 preferred for sustained high-temp service above 800°F\u003c\/li\u003e\n  \u003cli\u003eCF-8 and CF-8C cast stainless — ASTM A351 castings; ER308 provides compatible deposit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFerrite Number and Hot Cracking Resistance\u003c\/h3\u003e\n\u003cp\u003eProperly balanced ER308 deposit contains 4–12 FN (Ferrite Number) in the as-welded condition. Ferrite content is critical for hot cracking resistance in austenitic stainless welds — fully austenitic deposits (0 FN) are prone to solidification (hot) cracking, especially in fully restrained joints. Harris ER308 is formulated to produce deposits within the 4–9 FN range, providing hot cracking resistance while maintaining corrosion resistance and low-temperature toughness.\u003c\/p\u003e\n\u003ch3\u003e1\/16 in Diameter — Application Range\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e14–10 gauge stainless sheet\u003c\/strong\u003e (0.075–0.135 in): Automotive exhaust fabrication, HVAC stainless ductwork, food equipment fabrication. The 1\/16 in rod is the production size for sheet metal TIG in commercial fab shops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe root passes (Sch 10, Sch 40, 1–3 in NPS)\u003c\/strong\u003e: Root pass penetration on stainless pipe for process piping in food and chemical plants. 1\/16 in rod provides controlled deposit volume for open-butt root passes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThin-wall tube (0.049–0.083 in wall)\u003c\/strong\u003e: Sanitary tubing welds for food\/dairy\/pharmaceutical application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePost-Weld Cleaning Requirements\u003c\/h3\u003e\n\u003cp\u003eER308 TIG deposits on 304\/308 stainless require post-weld cleaning to restore corrosion resistance: (1) remove heat tint (oxidation) using stainless wire brushing plus pickling paste (10% nitric \/ 2% hydrofluoric acid blend) or electrolytic passivation; (2) passivate per ASTM A380 (nitric acid bath) for pressure equipment and food contact surfaces. Unpickled ER308 deposits in corrosive service environments will exhibit accelerated crevice and pitting corrosion at the heat-tinted zone.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs — Harris 308 Stainless TIG Welding Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What does ER308 mean in welding?\u003c\/strong\u003e\u003cbr\u003eER308 is the AWS A5.9 classification for stainless steel TIG (and MIG) filler wire. \"E\" = electrode (usable as either electrode or rod), \"R\" = rod (used as bare filler), \"308\" identifies the nominal alloy composition (18–20% Cr, 9–11% Ni, balance iron). The classification confirms the rod meets minimum chemistry and mechanical property requirements of AWS A5.9\/A5.9M.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Should I use ER308 or ER308L for my application?\u003c\/strong\u003e\u003cbr\u003eUse ER308L when: the finished assembly will be exposed to corrosive media, the weld zone will be re-heated (e.g., in a furnace or by subsequent welding passes), or the specification\/drawing calls for \"L\" grade filler. Use ER308 when: the joint is in benign service, re-heating is not a factor, and the spec permits either. When in doubt, ER308L is the safer choice — it meets all the same code requirements as ER308 while offering better sensitization resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Why is my ER308 stainless TIG weld discoloring (turning blue\/gold\/black)?\u003c\/strong\u003e\u003cbr\u003eDiscoloration (heat tint or oxidation) indicates inadequate argon shielding at the weld zone. Check: (1) gas flow rate — increase to 18–22 CFH, (2) gas lens installed — standard collet bodies have turbulent flow; switch to a gas lens, (3) drafts in the weld area — shield from wind or air movement, (4) trailing shielding on hot weld bead behind torch, and (5) back-purging on pipe roots. Light gold tint is minor oxidation; dark blue or black means severe inadequate shielding and the weld should be evaluated for intergranular corrosion risk in critical service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What shielding gas is correct for ER308 stainless TIG?\u003c\/strong\u003e\u003cbr\u003e100% argon (commercial or high-purity grade, 99.997% minimum) at 18–22 CFH is the standard. Argon\/helium blends (75\/25 Ar\/He) increase arc voltage and heat input — useful on heavier plate to increase travel speed. Never use argon\/CO₂ mixtures for stainless TIG — CO₂ reduces the weld metal and introduces carbon, defeating the purpose of the stainless filler.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Can ER308 be used to repair 316L stainless equipment?\u003c\/strong\u003e\u003cbr\u003eFor general-service repair where the equipment sees temperatures below 800°F and moderate corrosive conditions, ER308 is acceptable on 316L base metal as a temporary or permanent repair. For equipment handling chloride-containing media, seawater, or operating above 800°F, specify ER316L rod for the repair to preserve molybdenum content and pitting resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: What amperage should I run for 1\/16 in ER308 TIG rod?\u003c\/strong\u003e\u003cbr\u003eFor most applications, 80–150 amps DCEN. On 14 gauge sheet, 80–100 A with a foot pedal gives good control. For 3\/16 in plate, 130–160 A with a confident travel speed. Always use a foot pedal for stainless TIG if available — stainless builds heat quickly and amperage control prevents weld cracking, discoloration, and warpage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: Is a 10 lb box the right quantity for my project?\u003c\/strong\u003e\u003cbr\u003eAt roughly 1\/16 in diameter and 36 in length per rod, a 10 lb box contains approximately 110–120 individual rods. For a production run welding Schedule 10 pipe fittings or light sheet metal assemblies, a 10 lb box lasts a skilled welder through several hundred joint-inches of 1\/16 in rod work. For a single job-shop project, a 2 or 5 lb tube may be more economical. WeldingMart also stocks the 5 lb tube option (308LT305) for smaller quantity needs.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does ER308 mean in welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER308 is the AWS A5.9 classification for stainless steel TIG filler wire. ER stands for electrode\/rod, 308 identifies the 18-20% chromium and 9-11% nickel alloy composition. The classification confirms the rod meets minimum chemistry and mechanical properties per AWS A5.9\/A5.9M.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should I use ER308 or ER308L for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use ER308L when the assembly will be exposed to corrosive media, the weld will be re-heated, or the specification calls for L grade. Use ER308 when the joint is in benign service and re-heating is not a concern. When in doubt, ER308L is the safer choice as it offers better sensitization resistance while meeting all the same code requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why is my ER308 stainless TIG weld discoloring?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Discoloration indicates inadequate argon shielding. Check: increase gas flow to 18-22 CFH, install a gas lens for laminar flow, shield from air drafts, add trailing shielding, and back-purge pipe roots. Dark blue or black discoloration means severe inadequate shielding and should be evaluated in critical service.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shielding gas is correct for ER308 stainless TIG?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"100% argon at 18-22 CFH is the standard. Argon\/helium blends increase heat input on heavier plate. Never use argon\/CO2 mixtures for stainless TIG - CO2 introduces carbon and defeats the purpose of stainless filler.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can ER308 be used to repair 316L stainless equipment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For general-service repair below 800 degrees F and moderate corrosion conditions, ER308 is acceptable on 316L base metal. For equipment handling chloride media or operating above 800 degrees F, specify ER316L rod to preserve molybdenum content and pitting resistance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What amperage should I run for 1\/16 in ER308 TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For most applications, 80-150 amps DCEN. On 14 gauge sheet, 80-100 A with a foot pedal. For 3\/16 in plate, 130-160 A with a confident travel speed. Always use a foot pedal for stainless TIG if available.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is a 10 lb box the right quantity for my stainless TIG project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 10 lb box contains approximately 110-120 individual 1\/16 in rods. For production runs on Schedule 10 pipe or light sheet metal, a 10 lb box lasts through several hundred joint-inches. For smaller projects, a 2 or 5 lb tube may be more economical.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258840608919,"sku":"0308T30","price":117.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-308-stainless-steel-tig-gtaw-welding-rod-116-36in-10lb-box-0308t30-harris-1.jpg?v=1753396467"},{"product_id":"harris-er70s-6-mild-steel-tig-welding-rod-3-32-36in-10lb-box-e70s650","title":"Harris ER70S-6 Mild Steel TIG Welding Rod 3\/32 36in. 10LB Box - E70S650","description":"\u003ch2\u003eWhat Is Harris ER70S-6 Mild Steel TIG Welding Rod?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarris ER70S-6 Mild Steel TIG Welding Rod\u003c\/strong\u003e (part number E70S650) is a copper-coated mild steel filler metal classified \u003cstrong\u003eER70S-6 per AWS A5.18\/A5.18M\u003c\/strong\u003e. Available in a 3\/32 in (2.38 mm) diameter, 36-inch cut length, 10 lb box, this rod provides premium deoxidized weld deposits on mild steel, low-carbon steel, and structural steel plate using the gas tungsten arc welding (GTAW) process. Harris Products Group, a Lincoln Electric company, produces this ER70S-6 rod with tight manganese (1.40–1.85%) and silicon (0.80–1.15%) chemistry — the highest deoxidizer levels of the ER70S series — which makes it exceptionally tolerant of mill scale, slight rust, and surface oxides that would cause porosity with lower-deoxidized ER70S-2 or ER70S-3 rods. The result is a rod that produces smooth, bright, crack-free weld deposits even on less-than-perfect base metal surfaces, and provides reliable mechanical properties (≥70,000 psi tensile, ≥58,000 psi yield) in the as-welded condition.\u003c\/p\u003e\n\u003cp\u003eWhile ER70S-6 is best known as the dominant MIG wire classification for structural steel, the cut-rod TIG version is widely used for premium root-pass welding on carbon steel pipe, structural tubing welds requiring X-ray quality, and job shop TIG work on mild steel plate and fabrications where MIG setup is impractical. The 3\/32 in diameter is the production size for 1\/8 in–3\/8 in carbon steel plate, structural section, and pipe wall applications.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification — ER70S-6 TIG Rod\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER70S-6 (AWS A5.18\/A5.18M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHarris Part Number\u003c\/td\u003e\n\u003ctd\u003eE70S650\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3\/32 in (2.38 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut Length\u003c\/td\u003e\n\u003ctd\u003e36 in (914 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e10 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCarbon Content\u003c\/td\u003e\n\u003ctd\u003e0.06–0.15%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003e1.40–1.85%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSilicon\u003c\/td\u003e\n\u003ctd\u003e0.80–1.15%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhosphorus (max)\u003c\/td\u003e\n\u003ctd\u003e0.025%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSulfur (max)\u003c\/td\u003e\n\u003ctd\u003e0.035%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper (max)\u003c\/td\u003e\n\u003ctd\u003e0.50% (includes copper coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥70,000 psi (483 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eYield Strength (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥58,000 psi (400 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥22%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eImpact Toughness (as welded)\u003c\/td\u003e\n\u003ctd\u003e≥27 J at −29°C (−20°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEP or DCEN (DCEN preferred for TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e100% Argon or Ar\/CO₂ blends\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProcess\u003c\/td\u003e\n\u003ctd\u003eGTAW (TIG)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBase Metals\u003c\/td\u003e\n\u003ctd\u003eASTM A36, A53, A106, A516, A572, API 5L carbon and structural steels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBest Applications for ER70S-6 Mild Steel TIG Welding Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon Steel Pipe Root Passes:\u003c\/strong\u003e The primary structural TIG application for ER70S-6 3\/32 in rod is root pass welding on carbon steel pipe (API 5L Grade B, X42, X52, A106 Grade B) in 1–6 in NPS for process piping, fire protection, utilities, and general service. TIG root passes produce full-penetration, radiographically sound welds that SMAW or MIG fill\/cap passes are completed over — the most common pipe welding sequence on construction and shutdown projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructural Steel Fabrication:\u003c\/strong\u003e TIG welding A36 and A572 structural steel plate, tube, and section in shop fabrication environments where weld quality exceeds typical MIG requirements. Column connections, moment frames, and crane runway connections sometimes specify TIG roots for quality assurance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Vessel \u0026amp; Boiler Plate:\u003c\/strong\u003e ASME Section VIII and Section I vessels in P-No. 1 (carbon steel) — GTAW root passes on nozzle connections, flange-to-shell, and head-to-shell seams where full penetration radiographic quality is required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRepair \u0026amp; Maintenance:\u003c\/strong\u003e Repair welding on carbon steel components, buildup of worn surfaces on mild steel machinery parts, and structural repair of beams and frames. TIG with ER70S-6 is particularly useful for repairs in confined spaces where MIG gun access is limited.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAerospace Structural Steel:\u003c\/strong\u003e Low-alloy carbon steel hardware and structural members in aircraft support equipment, tooling fixtures, and ground support equipment where weld quality documentation is required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive \u0026amp; Racing Fabrication:\u003c\/strong\u003e Chassis tubes, suspension components, and roll cage fabrication in 1010–1020 mild steel tube and sheet where TIG's clean deposit and precise heat control provide the cosmetic and mechanical quality required for competition vehicle certification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Harris ER70S-6 TIG Rod — Settings, Gas \u0026amp; Polarity\u003c\/h2\u003e\n\u003cp\u003eMild steel TIG welding with 3\/32 in ER70S-6 uses DCEN polarity (same as stainless) with argon or argon-CO₂ shielding:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolarity — DCEN:\u003c\/strong\u003e DC electrode negative is standard for GTAW on carbon steel. DCEN concentrates 70% of the arc energy at the workpiece (better penetration) while keeping the tungsten cool. Do not use AC for mild steel TIG — it provides no benefit and produces an unstable arc.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShielding Gas:\u003c\/strong\u003e 100% argon is standard for mild steel GTAW and provides the cleanest arc starts and best bead appearance. Argon-CO₂ blends (75\/25 Ar\/CO₂) are sometimes used to increase deposition rate on heavy sections, but produce slightly higher spatter and darker bead color than pure argon. 100% argon at 18–22 CFH is the standard recommendation for 3\/32 in rod work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTungsten:\u003c\/strong\u003e 3\/32 in 2% ceriated or 2% lanthanated tungsten, sharpened to a 30–45° included angle point. For high-amperage heavy-plate work (above 200 A), 1\/8 in ceriated tungsten. The copper coating on ER70S-6 can deposit trace copper onto tungsten if the rod contacts the tungsten — if this occurs, replace or grind the tungsten tip back to clean metal.\u003c\/p\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaterial Thickness\u003c\/th\u003e\n\u003cth\u003eAmperage (DCEN)\u003c\/th\u003e\n\u003cth\u003eTravel Speed\u003c\/th\u003e\n\u003cth\u003ePasses\u003c\/th\u003e\n\u003cth\u003eAr Flow CFH\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1\/8 in A36\u003c\/td\u003e\n\u003ctd\u003e100–140 A\u003c\/td\u003e\n\u003ctd\u003e5–8 in\/min\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e18–20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e3\/16 in carbon steel\u003c\/td\u003e\n\u003ctd\u003e140–180 A\u003c\/td\u003e\n\u003ctd\u003e4–6 in\/min\u003c\/td\u003e\n\u003ctd\u003e1–2\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1\/4 in plate\u003c\/td\u003e\n\u003ctd\u003e170–210 A\u003c\/td\u003e\n\u003ctd\u003e4–5 in\/min\u003c\/td\u003e\n\u003ctd\u003e2–3\u003c\/td\u003e\n\u003ctd\u003e20–22\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePipe root pass (Sch 40)\u003c\/td\u003e\n\u003ctd\u003e70–110 A\u003c\/td\u003e\n\u003ctd\u003e3–4 in\/min\u003c\/td\u003e\n\u003ctd\u003eRoot only\u003c\/td\u003e\n\u003ctd\u003e18–20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eInterpass Cleaning:\u003c\/strong\u003e Unlike stainless, mild steel TIG weld deposits produce relatively little slag or silica islands. Light wire brushing or light grinding between passes on multi-pass work removes any surface silicate deposits and improves fusion on subsequent passes. For code-required radiographic quality (X-ray or UT), ensure full fusion at each pass and maintain specified preheat for the base metal thickness and chemistry.\u003c\/p\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling for ER70S-6 TIG Rod\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRust Prevention:\u003c\/strong\u003e ER70S-6 rod has a thin copper coating to protect against rust during storage. Store in original sealed box in a dry location (below 60% RH, above 40°F). Despite the copper coating, rust will develop on stored rods in humid environments. Rusty rods must not be used — the rust introduces hydrogen and oxygen into the weld pool, causing porosity and inclusions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e Store at room temperature. Rod that has been stored in cold, damp conditions and brought indoors may condensate moisture on the copper coating — allow rods to reach room temperature before use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDo Not Use Rusty Rod:\u003c\/strong\u003e Inspect rods before use. Light surface tarnish on the copper coating is acceptable. Red-orange rust spots on the underlying steel indicate the coating has been compromised — discard these rods or use only on non-code work where porosity inspection is not required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeparate from Stainless Rods:\u003c\/strong\u003e Do not store ER70S-6 mild steel rods in the same container as stainless TIG rods. Cross-contamination of mild steel rod with stainless weld joints, or vice versa, creates quality defects. Label storage clearly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-Hydrogen Classification:\u003c\/strong\u003e ER70S-6 is not a low-hydrogen electrode in the same classification sense as E7018 stick electrodes. However, keeping rods dry and free from contamination is good practice for all filler metals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Base Metals for ER70S-6 TIG Rod\u003c\/h2\u003e\n\u003cp\u003eER70S-6 TIG rod works with any DC GTAW machine:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Invertec V155-S:\u003c\/strong\u003e Compact, portable DC TIG\/SMAW machine suitable for pipe root passes and light structural TIG with ER70S-6.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Square Wave TIG 200:\u003c\/strong\u003e Full AC\/DC machine; DC mode for ER70S-6 mild steel TIG. Suitable for shop structural and pipe root-pass work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLincoln Electric Precision TIG 225 \/ 275:\u003c\/strong\u003e Higher-capacity machines for production structural steel TIG work at 175–250 A continuous duty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003cth\u003eER70S-6 Compatibility\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eASTM A36 structural steel\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003eStandard structural steel; ER70S-6 is default pre-qualified filler per AWS D1.1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eASTM A53 \/ A106 pipe\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003eCarbon steel pipe; standard root pass choice\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eASTM A516 Gr.70 (pressure vessel)\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003eNormalized carbon steel; ER70S-6 meets strength requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eASTM A572 Gr.50 HSLA\u003c\/td\u003e\n\u003ctd\u003e✅ Acceptable\u003c\/td\u003e\n\u003ctd\u003eHigher-strength base metal; ER70S-6 provides adequate weld metal strength for most joints\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAPI 5L Gr.B \/ X42 \/ X52 pipe\u003c\/td\u003e\n\u003ctd\u003e✅ Primary (with WPS)\u003c\/td\u003e\n\u003ctd\u003ePipeline root pass; verify WPS and CE (carbon equivalent) requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1010–1020 mild steel tube\u003c\/td\u003e\n\u003ctd\u003e✅ Primary\u003c\/td\u003e\n\u003ctd\u003eAutomotive \/ chassis; excellent choice for TIG on thin-wall mild tube\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCast iron\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eUse ENi-CI or ENiFe-CI for cast iron repair\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eUse ER308L\/ER316L for stainless; ER309L for dissimilar carbon-to-stainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFAQs — Harris ER70S-6 Mild Steel TIG Welding Rod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the difference between ER70S-6 and ER70S-2 or ER70S-3 TIG rod?\u003c\/strong\u003e\u003cbr\u003eThe number suffix designates the deoxidizer level. ER70S-6 has the highest Mn (1.40–1.85%) and Si (0.80–1.15%) levels of the common ER70S grades — making it the most tolerant of scale, rust, and surface contamination on the base metal. ER70S-2 and ER70S-3 have lower deoxidizer levels and produce cleaner (less silica) welds on very clean, freshly machined or ground base metal. For general structural steel work and pipe, ER70S-6 is the standard choice because real-world base metal surfaces are rarely perfectly clean. ER70S-2 is specified for some pipe applications (API requirements) requiring specific notch toughness at very low temperatures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I use ER70S-6 TIG rod for root passes on carbon steel pipe?\u003c\/strong\u003e\u003cbr\u003eYes. ER70S-6 is the most common GTAW filler for carbon steel pipe root passes (open butt, consumable insert, or backing ring configurations). Its high deoxidizer content produces porosity-resistant, radiographically sound root beads even on mill-scaled pipe OD\/ID surfaces. Verify the applicable WPS — most ASME and AWS pre-qualified procedures for P-No. 1 carbon steel allow ER70S-6 as an acceptable filler metal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Do I need to preheat carbon steel before TIG welding with ER70S-6?\u003c\/strong\u003e\u003cbr\u003ePreheating depends on the base metal thickness and carbon equivalent (CE). For A36 plate below 3\/4 in thickness and ambient temperature above 50°F, no preheat is typically required. For plate above 3\/4 in, A106 Grade B pipe above 1.5 in wall, A572 Grade 50, or any carbon steel in cold weather (below 40°F ambient), consult AWS D1.1 or ASME IX preheating requirements for the specific carbon equivalent. ER70S-6's good impact toughness (27 J at −29°C) ensures the weld metal is adequate even when moderate preheat is applied.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What shielding gas should I use for ER70S-6 TIG rod?\u003c\/strong\u003e\u003cbr\u003e100% argon is standard and recommended for most applications. Some welders use 75\/25 Ar\/CO₂ or 90\/10 Ar\/CO₂ blends on mild steel TIG to increase arc energy density and productivity on thick plate. These blends produce slightly darker bead color, more spatter, and higher silicon island formation, but provide adequate results on structural work. For code quality (X-ray\/UT), 100% argon typically produces the cleanest welds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Is ER70S-6 TIG rod suitable for welding A36 to A572 Grade 50 dissimilar mild steel?\u003c\/strong\u003e\u003cbr\u003eYes. ER70S-6 is an acceptable filler for welding A36 to A572 Gr.50 dissimilar mild steel joints. The minimum specified weld metal strength (70,000 psi) is \"matching\" strength for the lower-strength A36 member and \"undermatching\" for the A572 Gr.50 member. Per AWS D1.1, using a filler that matches the lower-strength base metal in a dissimilar joint is acceptable, as the joint design accounts for the lower-strength connection. Verify with the project structural engineer if the specific joint is critical.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: Can I weld galvanized mild steel with ER70S-6 TIG rod?\u003c\/strong\u003e\u003cbr\u003eTechnically yes, but with significant safety precautions. TIG welding galvanized steel at carbon steel melting temperatures vaporizes the zinc coating, generating zinc oxide fumes that cause zinc fume fever. Adequate ventilation or supplied-air respirator is mandatory. If minimum zinc fume is critical (automotive body panels), use silicon bronze TIG rod (ERCuSi-A) for braze-welding, which operates below steel melting temperature. ER70S-6 on galvanized is limited to structural applications where the zinc fume hazard is controlled.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: What is the copper coating on ER70S-6 rod for?\u003c\/strong\u003e\u003cbr\u003eThe thin copper coating on ER70S-6 rod serves two purposes: (1) corrosion protection during storage and transit — the copper barrier slows rust formation on the steel rod surface, and (2) improved electrical contact in MIG wire feeders (the copper reduces drive roll wear and provides consistent contact-tip resistance). On TIG cut rods, the copper coating provides the same storage corrosion protection. The copper is consumed in the weld deposit — a maximum 0.50% Cu is allowed in the final chemistry per AWS A5.18, which is within the acceptable range for carbon steel weld metal.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between ER70S-6 and ER70S-2 or ER70S-3 TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER70S-6 has the highest deoxidizer levels (Mn 1.40-1.85%, Si 0.80-1.15%) making it most tolerant of scale, rust, and surface contamination. ER70S-2 and ER70S-3 have lower deoxidizer levels and produce cleaner welds on freshly machined base metal. For general structural steel and pipe work, ER70S-6 is the standard choice.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use ER70S-6 TIG rod for root passes on carbon steel pipe?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. ER70S-6 is the most common GTAW filler for carbon steel pipe root passes. Its high deoxidizer content produces porosity-resistant, radiographically sound root beads even on mill-scaled pipe surfaces. Verify the applicable WPS — most ASME and AWS pre-qualified procedures for P-No. 1 carbon steel allow ER70S-6.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to preheat carbon steel before TIG welding with ER70S-6?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For A36 plate below 3\/4 in thickness at ambient above 50 degrees F, no preheat is typically required. For plate above 3\/4 in, A106 Grade B above 1.5 in wall, A572 Grade 50, or cold weather below 40 degrees F, consult AWS D1.1 or ASME IX preheating requirements for the specific carbon equivalent.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shielding gas should I use for ER70S-6 TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"100% argon is standard and recommended. Some welders use 75\/25 or 90\/10 Ar\/CO2 blends on thick plate for higher arc energy. For code quality X-ray or UT welds, 100% argon typically produces the cleanest deposits.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is ER70S-6 suitable for welding A36 to A572 Grade 50 dissimilar mild steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. ER70S-6 at 70,000 psi minimum tensile matches A36 strength and undermatches A572 Grade 50. Per AWS D1.1, using a filler matching the lower-strength base metal in a dissimilar joint is acceptable when the joint design accounts for the lower-strength connection.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the copper coating on ER70S-6 rod for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The copper coating provides: (1) corrosion protection during storage by slowing rust formation on the steel rod, and (2) improved electrical contact in MIG wire feeders. On TIG cut rods, it serves primarily as storage corrosion protection. Maximum 0.50% Cu is allowed in the final weld deposit per AWS A5.18.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I weld galvanized mild steel with ER70S-6 TIG rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Technically yes, but zinc oxide fumes generated require adequate ventilation or supplied-air respirator. For automotive body panels where minimum zinc fume is critical, use ERCuSi-A silicon bronze TIG rod for braze-welding at below-steel-melting temperatures instead.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Harris","offers":[{"title":"Default Title","offer_id":44258850209943,"sku":"E70S650","price":46.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-er70s-6-mild-steel-tig-welding-rod-332-36in-10lb-box-e70s650-harris-1.jpg?v=1753396064"},{"product_id":"lincoln-ultracore-316l-fcaw-g-0-045-inch-welding-wire","title":"Lincoln UltraCore 316L FCAW-G 0.045 inch Welding Wire","description":"\u003ch2\u003eWhat Is Lincoln UltraCore 316L FCAW-G Welding Wire?\u003c\/h2\u003e\n\u003cp\u003eLincoln Electric UltraCore 316L FCAW-G 0.045-inch welding wire (AWS A5.22 classification E316LT1-1\/4) is a gas-shielded flux-cored wire engineered specifically for welding 316 and 316L austenitic stainless steel. The \"L\" designation denotes extra-low carbon content (0.03% maximum), which reduces sensitization — the carbide precipitation at grain boundaries that makes stainless steel susceptible to intergranular corrosion in service environments involving temperatures between 800 °F and 1,650 °F (427–899 °C). The 2–3% molybdenum addition to the alloy provides enhanced resistance to pitting and crevice corrosion in chloride-containing environments, distinguishing 316L weld metal from standard 304\/308L deposits.\u003c\/p\u003e\n\u003cp\u003eUltraCore 316L is formulated with stabilized chemistry — nitrogen, titanium, and niobium additions that control the weld metal microstructure to produce a smooth, polished bead appearance and minimal post-weld cleanup. The titanium and niobium stabilizers also ensure the wire qualifies as E316LT1-1 (100% CO₂) and E316LT1-4 (Ar\/CO₂ mix) classifications in a single product, offering flexibility in shielding gas selection without stocking two wire lots.\u003c\/p\u003e\n\n\u003ch2\u003eAWS Classification, Specifications \u0026amp; Mechanical Properties\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWS Classification:\u003c\/strong\u003e E316LT1-1\/4 per AWS A5.22\/A5.22M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 0.03% max (low-carbon designation)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChromium:\u003c\/strong\u003e 17.0–20.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNickel:\u003c\/strong\u003e 11.0–14.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMolybdenum:\u003c\/strong\u003e 2.0–3.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManganese:\u003c\/strong\u003e 0.5–2.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon:\u003c\/strong\u003e 0.5–1.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 0.045 in (1.14 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTensile Strength (as-welded):\u003c\/strong\u003e ≥80,000 psi (550 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYield Strength (0.2% offset):\u003c\/strong\u003e ≥57,000 psi (393 MPa)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElongation:\u003c\/strong\u003e ≥25%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharpy Impact (–4 °F \/ –20 °C):\u003c\/strong\u003e ≥20 ft-lbf (27 J)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFerrite Number (FN):\u003c\/strong\u003e 3–15 FN typical (controlled for crack resistance)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreheat \/ Interpass Temperature:\u003c\/strong\u003e 300 °F (149 °C) maximum interpass to control ferrite\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBest Applications for UltraCore 316L FCAW-G Wire\u003c\/h2\u003e\n\u003cp\u003eLincoln UltraCore 316L is purpose-built for corrosion-critical stainless steel fabrication in demanding service environments:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical and Petrochemical Processing:\u003c\/strong\u003e Reactor vessels, heat exchangers, piping, and pressure vessels handling chloride-bearing fluids, acids, and corrosive process streams where 304L's lack of molybdenum is insufficient.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine and Offshore Structures:\u003c\/strong\u003e Seawater piping, pump housings, valve bodies, and subsea hardware where chloride pitting resistance is a code requirement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical and Sanitary Manufacturing:\u003c\/strong\u003e Tanks and lines that must pass passivation and electro-polishing specifications. Low carbon content minimizes sensitization that could harbor bacteria in crevice-corrosion pits.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood Processing Equipment:\u003c\/strong\u003e Washdown tables, hoppers, and conveyors where daily sanitizing cycles with chlorine-based cleaners demand molybdenum-bearing stainless.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePulp and Paper Mills:\u003c\/strong\u003e Digester components, bleach plant piping, and black-liquor evaporator tubes where highly acidic, chloride-laden environments require 316L metallurgy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Generation:\u003c\/strong\u003e Boiler headers, steam lines, and condenser tubing fabrication and repair where elevated-temperature corrosion service is combined with thermal cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Weld with UltraCore 316L FCAW-G — Settings, Gas \u0026amp; Technique\u003c\/h2\u003e\n\u003cp\u003eLincoln UltraCore 316L is designed for all-position welding with external shielding gas. Follow these parameters for optimum results:\u003c\/p\u003e\n\u003ch3\u003eShielding Gas\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary recommendation:\u003c\/strong\u003e 75–85% Argon \/ 20–25% CO₂ (C25 or equivalent). Argon-rich blends produce lower spatter, smoother bead contour, and better side-wall fusion on vertical-up passes compared to 100% CO₂.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlternate:\u003c\/strong\u003e 100% CO₂ (qualifies as T1-1 designation). Spatter increases slightly and bead profile flattens, but penetration profile improves — suitable for production flat\/horizontal work where spatter cleanup cost is managed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e 35–50 CFH. Increase toward 50 CFH in drafty environments. Do not use nitrogen or mixed nitrogen blends — nitrogen absorbs into austenitic stainless weld metal and can cause porosity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVoltage and Wire Feed Speed\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlat\/Horizontal (1F, 2F, 1G, 2G):\u003c\/strong\u003e 27–30 V \/ WFS 280–350 ipm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVertical-Up (3G, 3F):\u003c\/strong\u003e 24–26 V \/ WFS 200–250 ipm. Use a triangular or Z-weave pattern; do not allow the puddle to become convex or undercut will develop at the toes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverhead (4G, 4F):\u003c\/strong\u003e 24–26 V \/ WFS 190–230 ipm. Use short stringer passes — weaving in the overhead position causes excessive heat input and potential burn-through on light gauge material.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCTWD (Contact-Tip-to-Work Distance):\u003c\/strong\u003e 3\/4 in to 1-1\/4 in (19–32 mm). Longer CTWD increases electrical resistance heating of the wire extension, improves deposition rate, but reduces penetration. Stay within this range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWelding Technique\u003c\/h3\u003e\n\u003cp\u003eFor stainless steel FCAW-G, use a slight drag angle (5–15° toward direction of travel) to maintain shielding gas coverage over the solidifying puddle. Avoid push angles greater than 5° — they can trap slag. On multi-pass welds, allow each pass to cool to 300 °F maximum interpass temperature before depositing the next bead; this is critical for maintaining corrosion resistance (over-heating causes chromium carbide precipitation that depletes the heat-affected zone's corrosion protection). Remove slag between passes with a stainless-wire brush dedicated to stainless work only — never use a brush that has been used on carbon steel, as iron contamination on the brush will embed ferrous particles in the 316L weld surface, creating rust staining.\u003c\/p\u003e\n\n\u003ch2\u003eStorage and Handling of Lincoln UltraCore 316L Wire\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStore in original sealed packaging\u003c\/strong\u003e in a dry area at 50–100 °F (10–38 °C). UltraCore 316L wire is packaged in moisture-barrier bags with desiccant to maintain wire quality in humid climates.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnce opened,\u003c\/strong\u003e store partially used spools in a sealed plastic bag with fresh desiccant and return to storage. Do not leave wire exposed in the feeder overnight in humid shop environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRusty or oxidized wire should be discarded.\u003c\/strong\u003e Surface rust or discoloration on stainless FCAW wire is evidence of moisture exposure and will cause porosity, inconsistent arc behavior, and out-of-specification weld chemistry.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire conditioner:\u003c\/strong\u003e For wire spools that have been stored for extended periods, run 6–12 inches of wire through the conduit before beginning production welding to purge any conduit-lubricant buildup from the wire surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Machines and Base Metals\u003c\/h2\u003e\n\u003cp\u003eUltraCore 316L is compatible with any CV (constant voltage) MIG\/FCAW power source capable of maintaining stable voltage in the 24–30 V range at the deposition rates listed above. Recommended Lincoln Electric platforms include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLincoln Power Wave S350 and S500 (advanced waveform control for smooth FCAW)\u003c\/li\u003e\n  \u003cli\u003eLincoln Invertec V350-Pro\u003c\/li\u003e\n  \u003cli\u003eLincoln Power MIG 256 and 350MP\u003c\/li\u003e\n  \u003cli\u003eLincoln Idealarc CV-400 and DC-400 (legacy platforms still in service)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary base metals (direct classification match):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI 316 and 316L austenitic stainless steel (all product forms)\u003c\/li\u003e\n  \u003cli\u003eASTM A240 Grade 316\/316L plate\u003c\/li\u003e\n  \u003cli\u003eASTM A312 Grade TP316L pipe\u003c\/li\u003e\n  \u003cli\u003eASTM A276 Grade 316L bar and shapes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary base metals (dissimilar or similar-chemistry):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e321 stainless (titanium-stabilized, where 316L deposit is acceptable per engineering)\u003c\/li\u003e\n  \u003cli\u003e317L stainless (higher Mo; 316L filler accepted for repair\u003c\/li\u003e\n  \u003cli\u003eCarbon steel to 316L overlays (buffer layer required; see Lincoln procedure D1.6)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions — Lincoln UltraCore 316L FCAW-G Wire\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the difference between 308L and 316L stainless welding wire?\u003c\/strong\u003e\u003cbr\u003e\nA: ER308L \/ E308LT1 is designed for welding 304 and 304L base metals and contains no molybdenum. E316LT1-1\/4 (UltraCore 316L) adds 2–3% molybdenum, which significantly improves pitting and crevice corrosion resistance in chloride environments. Use 308L for general 304 stainless fabrication; use 316L for marine, chemical, or food-processing applications where chloride exposure is present.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can UltraCore 316L be used on 304L stainless steel?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — 316L filler metal is an acceptable overmatch for 304 and 304L base metals in terms of corrosion resistance and mechanical properties. The resulting deposit will have better corrosion performance than strictly required, but the joint will meet or exceed the 304L base metal specification. Many contractors standardize on 316L wire to avoid mixing wire lots when both 304 and 316 are in the shop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What causes porosity in stainless steel FCAW-G welds?\u003c\/strong\u003e\u003cbr\u003e\nA: The most common causes are: (1) wind or drafts disrupting shielding gas coverage — shield the work area; (2) shielding gas flow too low — maintain 35–50 CFH; (3) moisture-contaminated wire or flux — replace wire and check storage conditions; (4) nitrogen-containing gas mixtures — use Ar\/CO₂ only; (5) excessive CTWD — stay within 3\/4–1-1\/4 in.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What is the maximum interpass temperature for 316L stainless welding?\u003c\/strong\u003e\u003cbr\u003e\nA: 300 °F (149 °C). Exceeding this temperature on multi-pass welds causes chromium carbide precipitation in the heat-affected zone (sensitization), which depletes the chromium available for corrosion protection. Use a contact pyrometer or temperature-indicating crayons to check interpass temperature on the parent metal adjacent to the weld joint before depositing each subsequent pass.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Does UltraCore 316L wire require a preheat?\u003c\/strong\u003e\u003cbr\u003e\nA: Austenitic stainless steel does not require preheat for hydrogen control (unlike carbon steel) and is generally welded at ambient temperature. However, on very thick section (over 1-1\/2 in) in cold shop environments (below 40 °F), a mild warm-up to 100–150 °F reduces the risk of thermal shock cracking and improves fusion on the root pass. Never preheat 316L to the temperatures used for carbon steel (300–500 °F) — excess heat increases sensitization risk.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: How do I prevent rust staining on my 316L FCAW welds?\u003c\/strong\u003e\u003cbr\u003e\nA: Rust staining on 316L welds is almost always caused by iron contamination from carbon steel grinding wheels, wire brushes, fixtures, or tooling. Use only stainless-steel dedicated wire brushes, stainless-steel grinding wheels, and clean fixtures that have not contacted carbon steel. After welding, passivate with citric acid (preferred) or nitric acid per ASTM A380 to restore the passive film if the project specification requires it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: What ferrite number should 316L FCAW welds have?\u003c\/strong\u003e\u003cbr\u003e\nA: AWS D1.6 and most pressure-vessel codes require 3–15 FN for austenitic stainless weld deposits. This ferrite range provides sufficient hot-crack resistance without compromising corrosion properties. UltraCore 316L is formulated to consistently deposit within this range. Ferrite can be measured non-destructively with a Fischer Feritscope or equivalent instrument.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 308L and 316L stainless welding wire?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"ER308L \/ E308LT1 is designed for welding 304 and 304L base metals and contains no molybdenum. E316LT1-1\/4 (UltraCore 316L) adds 2–3% molybdenum, which significantly improves pitting and crevice corrosion resistance in chloride environments. Use 308L for general 304 stainless fabrication; use 316L for marine, chemical, or food-processing applications where chloride exposure is present.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can UltraCore 316L be used on 304L stainless steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — 316L filler metal is an acceptable overmatch for 304 and 304L base metals in terms of corrosion resistance and mechanical properties. The resulting deposit will have better corrosion performance than strictly required, but the joint will meet or exceed the 304L base metal specification.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What causes porosity in stainless steel FCAW-G welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The most common causes are: (1) wind or drafts disrupting shielding gas coverage — shield the work area; (2) shielding gas flow too low — maintain 35–50 CFH; (3) moisture-contaminated wire or flux — replace wire and check storage conditions; (4) nitrogen-containing gas mixtures — use Ar\/CO₂ only; (5) excessive CTWD — stay within 3\/4–1-1\/4 in.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the maximum interpass temperature for 316L stainless welding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"300 °F (149 °C). Exceeding this temperature on multi-pass welds causes chromium carbide precipitation in the heat-affected zone (sensitization), which depletes the chromium available for corrosion protection. Use a contact pyrometer or temperature-indicating crayons to check interpass temperature on the parent metal adjacent to the weld joint before depositing each subsequent pass.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does UltraCore 316L wire require a preheat?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Austenitic stainless steel does not require preheat for hydrogen control and is generally welded at ambient temperature. On very thick section (over 1-1\/2 in) in cold environments (below 40 °F), a mild warm-up to 100–150 °F reduces thermal shock cracking risk. Never preheat 316L to the temperatures used for carbon steel — excess heat increases sensitization risk.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I prevent rust staining on my 316L FCAW welds?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rust staining on 316L welds is almost always caused by iron contamination from carbon steel grinding wheels, wire brushes, fixtures, or tooling. Use only stainless-steel dedicated wire brushes and grinding wheels. After welding, passivate with citric acid or nitric acid per ASTM A380 to restore the passive film if the project specification requires it.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What ferrite number should 316L FCAW welds have?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"AWS D1.6 and most pressure-vessel codes require 3–15 FN for austenitic stainless weld deposits. This ferrite range provides sufficient hot-crack resistance without compromising corrosion properties. UltraCore 316L is formulated to consistently deposit within this range. Ferrite can be measured non-destructively with a Fischer Feritscope or equivalent instrument.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Lincoln Electric","offers":[{"title":"33 lb Spool","offer_id":43639147724951,"sku":"ED037129","price":635.24,"currency_code":"USD","in_stock":true},{"title":"10 lb Spool","offer_id":44222912135319,"sku":"ED037221","price":174.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed037221-ultracore-316l-p-flux-cored-fcaw-g-welding-wire-0-045-in-10-lb-spool-lincoln-electric-1.jpg?v=1766510288"},{"product_id":"harris-308-stainless-steel-mig-gmaw-welding-alloy","title":"Harris 308 Stainless Steel MIG GMAW Welding Alloy","description":"\u003ch2\u003eWhat Is Harris 308 Stainless Steel MIG Welding Wire (ER308L)?\u003c\/h2\u003e\n\u003cp\u003eHarris 308 stainless steel MIG GMAW welding alloy is an ER308L classified low-carbon austenitic stainless steel MIG wire per AWS A5.9\/A5.9M. Harris Products Group, a Lincoln Electric company, manufactures 308L stainless MIG wire to serve a broad range of 304, 304L, 308, and 308L stainless steel welding applications. Available in multiple diameters and spool sizes, WeldingMart stocks Harris 308L stainless MIG wire as an authorized Harris distributor. This page covers the full Harris 308 stainless steel MIG GMAW welding alloy product line.\u003c\/p\u003e\n\u003cp\u003eER308L is the most widely used stainless steel MIG wire, suitable for over 60% of all stainless steel welding applications. The \"L\" designation means low carbon (0.03% max C), which prevents sensitization — the intergranular corrosion attack that occurs when chromium carbides precipitate at grain boundaries during welding heat cycles. By specifying ER308L, engineers ensure the weld zone resists carbide precipitation and maintains corrosion resistance in as-welded condition without post-weld heat treatment in most service environments.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; AWS Classification\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAWS Classification\u003c\/td\u003e\n\u003ctd\u003eER308L (AWS A5.9\/A5.9M)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eVendor\u003c\/td\u003e\n\u003ctd\u003eHarris Products Group (Lincoln Electric Company)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAvailable Diameters\u003c\/td\u003e\n\u003ctd\u003e0.025, 0.030, 0.035, 0.045, 1\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCr content\u003c\/td\u003e\n\u003ctd\u003e19.5–22.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNi content\u003c\/td\u003e\n\u003ctd\u003e9.0–11.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC content (max)\u003c\/td\u003e\n\u003ctd\u003e0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMn content\u003c\/td\u003e\n\u003ctd\u003e1.0–2.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSi content\u003c\/td\u003e\n\u003ctd\u003e0.65–1.0% (Si for ER308LSi)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTensile Strength (as-welded)\u003c\/td\u003e\n\u003ctd\u003e≥ 80,000 psi (550 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eElongation\u003c\/td\u003e\n\u003ctd\u003e≥ 35%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFerrite Number\u003c\/td\u003e\n\u003ctd\u003e4–12 FN (prevents solidification cracking)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEP\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e98% Ar \/ 2% O₂ or 98% Ar \/ 2% CO₂\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eAWS A5.9 and its metric equivalent A5.9M govern stainless steel bare electrodes and rods for arc welding. Published by the \u003ca href=\"https:\/\/www.aws.org\/standards\"\u003eAmerican Welding Society\u003c\/a\u003e. Harris technical data at \u003ca href=\"https:\/\/harriswelding.com\"\u003eharriswelding.com\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eBest Applications for 308 Stainless Steel MIG Wire\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType 304 and 304L stainless steel:\u003c\/strong\u003e ER308L is the standard filler for welding 304 and 304L — the most common austenitic stainless steels used in food processing, chemical, and general industrial service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood service and dairy equipment:\u003c\/strong\u003e Welding 304\/304L tanks, piping, valves, and fittings where FDA-acceptable welds and intergranular corrosion resistance are required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical processing vessels:\u003c\/strong\u003e Fabricating stainless MIG welding wire vessels and piping handling non-chloride acids, alkalis, and organic solvents at ambient and elevated temperatures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArchitectural and ornamental stainless:\u003c\/strong\u003e Welding decorative 304 stainless railings, panels, and structural elements where weld zone appearance and corrosion resistance are both important.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical equipment:\u003c\/strong\u003e FDA-regulated process equipment and clean-in-place (CIP) piping systems requiring ultra-clean MIG weld quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGeneral fabrication:\u003c\/strong\u003e Any 304\/304L stainless steel structure, bracket, tank, or assembly requiring corrosion-resistant MIG welds without post-weld annealing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use — Settings, Technique, and Process Parameters\u003c\/h2\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eER308L Stainless MIG (0.035 in typical)\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShielding Gas\u003c\/td\u003e\n\u003ctd\u003e98% Ar \/ 2% O₂ or 98% Ar \/ 2% CO₂ (tri-mix for spray)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFlow Rate\u003c\/td\u003e\n\u003ctd\u003e35–50 CFH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eDCEP\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWire Feed Speed (0.035 in)\u003c\/td\u003e\n\u003ctd\u003e200–350 IPM\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e18–24 V (short-circuit); 24–30 V (spray)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCurrent (0.035 in)\u003c\/td\u003e\n\u003ctd\u003e100–200 A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTransfer Mode\u003c\/td\u003e\n\u003ctd\u003eShort-circuit (thin gauge); spray or pulsed (thick sections)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBack Purge\u003c\/td\u003e\n\u003ctd\u003e100% Ar back purge required for root pass in piping\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePreheat\u003c\/td\u003e\n\u003ctd\u003eNot required for standard austenitic stainless at ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInterpass Temp\u003c\/td\u003e\n\u003ctd\u003e≤ 350 °F (to prevent sensitization)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eStainless steel has lower thermal conductivity than carbon steel — heat accumulates in the joint and can sensitize the heat-affected zone if interpass temperature exceeds 350 °F. Allow stringer beads to cool adequately. Use 100% argon back purge on the root pass of pipe and tubing to prevent sugar (granular oxidation) on the backside of the joint.\u003c\/p\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eStore in a dry location at 40–120 °F. Stainless steel wire should be kept separate from carbon steel tools, brushes, and storage to prevent iron contamination that causes rust-staining of stainless welds. Use stainless-steel-dedicated wire brushes and grinding discs on stainless fabrications. Keep original spool packaging sealed until use; rewrap unused wire in clean plastic.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Machines \u0026amp; Shielding Gas\u003c\/h2\u003e\n\u003cp\u003eHarris 308L MIG wire is compatible with any constant-voltage GMAW power source. Pulse-capable machines (Lincoln Power Wave, Lincoln Power MIG 256) enable pulsed spray transfer, which significantly reduces heat input and improves weld quality on thin stainless sheet. Use 98% Ar \/ 2% O₂ for short-circuit and spray transfer (most common); tri-mix (90 He \/ 7.5 Ar \/ 2.5 CO₂) for high-production spray. See also \u003ca href=\"\/products\/harris-4130-chrome-moly-mig-gmaw-welding-wire-035-x-33-spool-04130f8\"\u003eHarris 4130 Chrome-Moly MIG Wire\u003c\/a\u003e and \u003ca href=\"\/collections\/welding-wire-mig-flux\"\u003eall welding wire\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs — Harris 308 Stainless Steel MIG Wire\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003e\u003cstrong\u003eWhat is ER308L stainless MIG wire used for?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eER308L is the primary filler for welding Type 304 and 304L austenitic stainless steel — the most commonly used stainless alloys. The \"L\" (low carbon) designation prevents intergranular corrosion (sensitization) in the weld zone without requiring post-weld heat treatment, making ER308L suitable for food service, chemical, pharmaceutical, and architectural applications.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eWhat is the difference between ER308L and ER308LSi?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eER308LSi contains 0.65–1.0% silicon vs 0.30–0.65% Si in ER308L. The higher silicon in ER308LSi improves fluidity, wettability, and appearance of the weld pool — particularly in short-circuit transfer mode. This makes ER308LSi the preferred choice for out-of-position welding and thin stainless sheet. ER308L and ER308LSi are otherwise equivalent for most corrosion resistance and mechanical property purposes.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eWhat shielding gas should I use for stainless MIG welding?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eThe standard is 98% Ar \/ 2% O₂ or 98% Ar \/ 2% CO₂. The small addition of O₂ or CO₂ stabilizes the arc and improves weld pool fluidity. Avoid high-CO₂ blends (C25) — excessive carbon pickup from CO₂ can increase weld metal carbon content, risking sensitization in multi-pass welds. For automated spray transfer, 90 He \/ 7.5 Ar \/ 2.5 CO₂ tri-mix is common for high deposition rates.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eWhat does carbide precipitation mean for stainless steel welding?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eDuring welding, chromium in stainless steel reacts with carbon at grain boundaries in the 800–1,600 °F temperature range (the sensitization zone). The result is chromium carbide precipitation, which depletes chromium from the grain boundaries and makes the weld zone susceptible to intergranular corrosion — a failure mode known as \"weld decay.\" Using low-carbon ER308L (≤ 0.03% C) minimizes this risk, as less carbon is available to form carbides.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eDo I need back purge when MIG welding stainless steel pipe?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eYes, for the root pass (first inside pass on a pipe joint). Without argon back purge, the inside of the weld oxidizes severely — producing \"sugaring\" (granular oxidation) that significantly weakens the joint, reduces corrosion resistance, and creates crevices for bacteria growth in food and pharmaceutical applications. Use 100% argon back purge at low flow (5–15 CFH) to displace oxygen from inside the pipe before tacking.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eCan I use ER308L wire to weld 316L stainless steel?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eER308L is not recommended for welding 316L stainless. Type 316L contains 2–3% molybdenum for improved pitting resistance in chloride environments — ER308L does not contain molybdenum and would deposit a non-matching, lower corrosion resistance weld metal. Use ER316L for 316L stainless applications in marine, chloride-bearing, and food\/pharma environments.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eWhat ferrite number should stainless MIG wire deposits have?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eER308L deposits typically show 4–12 FN (Ferrite Number). A minimum of 3–5 FN is important for preventing solidification hot cracking (Schaeffler diagram analysis shows fully austenitic welds are crack-susceptible). Above 15–20 FN, ferrite content can reduce notch toughness at cryogenic temperatures. 4–12 FN is the safe operating range for most 308L MIG applications.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eExpert Guide — ER308L Wire Selection for Stainless Steel Welding\u003c\/h2\u003e\n\u003cp\u003eSelecting the right ER308L wire diameter and grade for your stainless MIG welding application depends on the base metal thickness, transfer mode, and position requirements. The wire diameter range — 0.025 in for thin sheet, 0.030–0.035 in for general fabrication, 0.045 in for production — determines heat input per pass and deposition rate. ER308L is the standard for Type 304\/304L and prevents carbide precipitation by limiting carbon to 0.03% maximum. ER308LSi is preferred when weld pool fluidity and out-of-position wettability are more important than exact chemistry match. The intergranular corrosion risk (sensitization) from welding with standard 308 rather than 308L is most critical in services involving nitric acid, ammonium, and dilute sulfuric acid. The ferrite number in ER308L deposits (4–12 FN) helps prevent solidification cracking and makes this a more robust filler than fully austenitic alternatives. For the wire diameter and shielding gas combination, 0.035 in with 98 Ar \/ 2 O₂ is the most widely used setup for structural stainless fabrication.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is ER308L stainless MIG wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"ER308L is the primary filler for welding Type 304 and 304L stainless steel. Low carbon prevents sensitization (intergranular corrosion) without post-weld heat treatment.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between ER308L and ER308LSi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"ER308LSi has higher silicon (0.65-1.0%) improving fluidity and wettability, making it preferred for out-of-position welding and thin stainless sheet. Otherwise equivalent for corrosion resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What shielding gas should I use for stainless MIG welding?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"98% Ar \/ 2% O2 or 98% Ar \/ 2% CO2. Avoid high-CO2 blends (C25) which increase carbon pickup and risk sensitization. Tri-mix (90 He\/7.5 Ar\/2.5 CO2) for high-production spray transfer.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does carbide precipitation mean for stainless steel welding?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"At 800-1,600°F, chromium reacts with carbon at grain boundaries forming chromium carbides, depleting chromium and causing intergranular corrosion (weld decay). Low-carbon ER308L minimizes this risk.\"}},\n    {\"@type\": \"Question\", \"name\": \"Do I need back purge when MIG welding stainless steel pipe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, for the root pass. Without argon back purge, the inside oxidizes (sugaring), weakening the joint and reducing corrosion resistance. Use 100% Ar at 5-15 CFH.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can I use ER308L wire to weld 316L stainless steel?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. 316L requires ER316L which contains molybdenum for pitting resistance in chloride environments. ER308L deposits lack molybdenum and will underperform in 316L applications.\"}},\n    {\"@type\": \"Question\", \"name\": \"What ferrite number should stainless MIG wire deposits have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"ER308L deposits typically show 4-12 FN. Minimum 3-5 FN prevents solidification hot cracking. Above 15-20 FN reduces notch toughness at cryogenic temperatures.\"}}\n  ]\n}\n\u003c\/script\u003e\n\n\u003ch2\u003eWelding 308L Stainless — Technique, Troubleshooting, and Quality Control\u003c\/h2\u003e\n\u003cp\u003eWelding 308 stainless steel with ER308L MIG wire demands attention to heat management, joint fit-up, and post-weld finishing more than carbon steel work. The corrosion resistance of Type 304 and 304L stainless steel depends on a minimum 10.5% chromium content at the surface — grinding with contaminated abrasives, poor interpass temperature control, or inadequate back purge on pipe all compromise this. Use stainless steel wire brushes and grinding wheels dedicated to stainless; never use a wheel previously used on carbon steel. The iron particles embedded in a contaminated wheel transfer to the stainless surface and create rust spots within days.\u003c\/p\u003e\n\u003cp\u003eFor the root pass on stainless pipe, set back purge flow at 5–15 CFH using 100% argon. Check the inside of the pipe after the first pass: clean root welds appear bright silver-gold. Any blue, brown, or granular appearance (\"sugaring\") indicates oxygen contamination and requires rework. For structural applications on plate and sheet, back purge is not mandatory but reduces heat-affected zone sensitization in multi-pass joints.\u003c\/p\u003e\n\u003cp\u003eShort-circuit transfer on 0.035 in ER308L is ideal for sheet metal (14–16 gauge) and out-of-position work. Set voltage to 18–21 V with wire feed speed at 200–280 IPM. Stringer beads are preferred over weave beads — weaving increases heat input per inch of weld and elevates HAZ sensitization risk. On 1\/4 in and thicker material, spray transfer or pulsed MIG provides better fusion and deposition rates; set voltage to 26–29 V.\u003c\/p\u003e\n\u003cp\u003eInterpass temperature must be monitored on multi-pass welds. Allow each pass to cool below 350 °F before depositing the next pass. Excessive interpass temperature creates a wide sensitization band in the HAZ that defeats the purpose of using low-carbon ER308L. A contact thermometer or temperature-indicating sticks at the tack locations are the simplest monitoring tools.\u003c\/p\u003e\n\u003ch3\u003eCommon ER308L Weld Quality Issues and Fixes\u003c\/h3\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eProblem\u003c\/th\u003e\n\u003cth\u003eCause\u003c\/th\u003e\n\u003cth\u003eFix\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePorosity in weld\u003c\/td\u003e\n\u003ctd\u003eContamination on base metal or wire; inadequate shielding gas coverage\u003c\/td\u003e\n\u003ctd\u003eClean base metal with acetone; increase gas flow to 30–35 CFH; check for drafts\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSugaring on backside (pipe)\u003c\/td\u003e\n\u003ctd\u003eInsufficient or absent back purge\u003c\/td\u003e\n\u003ctd\u003eIncrease Ar back purge; purge for 30 seconds before tacking\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIntergranular corrosion after service\u003c\/td\u003e\n\u003ctd\u003eExcessive interpass temp; using ER308 instead of ER308L\u003c\/td\u003e\n\u003ctd\u003eMonitor interpass temp ≤ 350 °F; confirm ER308L (not ER308) specification\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeld pool too fluid (burn-through on thin sheet)\u003c\/td\u003e\n\u003ctd\u003eVoltage too high for gauge; spray transfer on thin material\u003c\/td\u003e\n\u003ctd\u003eReduce voltage 1–2 V; switch to short-circuit mode; reduce wire feed speed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eLack of fusion\u003c\/td\u003e\n\u003ctd\u003eTravel speed too fast; voltage too low\u003c\/td\u003e\n\u003ctd\u003eSlow travel speed; increase voltage 1 V; use stringer beads for better fusion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eER308L vs. ER308LSi vs. ER309L — Choosing the Right Filler\u003c\/h3\u003e\n\u003cp\u003eThe 308 family of stainless MIG wires includes several variants serving different purposes:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER308L:\u003c\/strong\u003e Standard low-carbon filler for Type 304\/304L stainless. Maximum 0.03% carbon prevents sensitization. Best choice for structural fabrication, food service, pharmaceutical, and architectural stainless welding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER308LSi:\u003c\/strong\u003e Higher silicon (0.65–1.0%) version of ER308L. Improved arc stability, weld pool fluidity, and out-of-position performance. Preferred for thin sheet, MIG welding in short-circuit transfer, and appearance-critical applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER309L:\u003c\/strong\u003e Used for welding dissimilar metals — joining stainless steel to carbon steel, or as a butter layer. Higher alloy content prevents dilution from carbon steel from reducing corrosion resistance below acceptable levels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L:\u003c\/strong\u003e Contains 2–3% Mo for superior pitting resistance in chloride (marine, chemical processing) environments. Use for Type 316\/316L stainless applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHarris 308 stainless steel MIG welding alloy is available in multiple spool weights and wire diameters to match production volume. For thin sheet applications (0.025 in diameter), OEM panel fabrication, and pharmaceutical tubing, check Harris's full ER308L range. For austenitic stainless structural work, 0.035 in wire in the 30 lb spool is the most economical format.\u003c\/p\u003e\n\n\u003ch2\u003eWelding 308L Stainless — Technique, Troubleshooting, and Quality Control\u003c\/h2\u003e\n\u003cp\u003eWelding 308 stainless steel with ER308L MIG wire demands attention to heat management, joint fit-up, and post-weld finishing more than carbon steel work. The corrosion resistance of Type 304 and 304L stainless steel depends on a minimum 10.5% chromium content at the surface — grinding with contaminated abrasives, poor interpass temperature control, or inadequate back purge on pipe all compromise this. Use stainless steel wire brushes and grinding wheels dedicated to stainless; never use a wheel previously used on carbon steel. The iron particles embedded in a contaminated wheel transfer to the stainless surface and create rust spots within days.\u003c\/p\u003e\n\u003cp\u003eFor the root pass on stainless pipe, set back purge flow at 5–15 CFH using 100% argon. Check the inside of the pipe after the first pass: clean root welds appear bright silver-gold. Any blue, brown, or granular appearance (\"sugaring\") indicates oxygen contamination and requires rework. For structural applications on plate and sheet, back purge is not mandatory but reduces heat-affected zone sensitization in multi-pass joints.\u003c\/p\u003e\n\u003cp\u003eShort-circuit transfer on 0.035 in ER308L is ideal for sheet metal (14–16 gauge) and out-of-position work. Set voltage to 18–21 V with wire feed speed at 200–280 IPM. Stringer beads are preferred over weave beads — weaving increases heat input per inch of weld and elevates HAZ sensitization risk. On 1\/4 in and thicker material, spray transfer or pulsed MIG provides better fusion and deposition rates; set voltage to 26–29 V.\u003c\/p\u003e\n\u003cp\u003eInterpass temperature must be monitored on multi-pass welds. Allow each pass to cool below 350 °F before depositing the next pass. Excessive interpass temperature creates a wide sensitization band in the HAZ that defeats the purpose of using low-carbon ER308L. A contact thermometer or temperature-indicating sticks at the tack locations are the simplest monitoring tools.\u003c\/p\u003e\n\u003ch3\u003eCommon ER308L Weld Quality Issues and Fixes\u003c\/h3\u003e\n\u003ctable class=\"pdp-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eProblem\u003c\/th\u003e\n\u003cth\u003eCause\u003c\/th\u003e\n\u003cth\u003eFix\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePorosity in weld\u003c\/td\u003e\n\u003ctd\u003eContamination on base metal or wire; inadequate shielding gas coverage\u003c\/td\u003e\n\u003ctd\u003eClean base metal with acetone; increase gas flow to 30–35 CFH; check for drafts\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSugaring on backside (pipe)\u003c\/td\u003e\n\u003ctd\u003eInsufficient or absent back purge\u003c\/td\u003e\n\u003ctd\u003eIncrease Ar back purge; purge for 30 seconds before tacking\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIntergranular corrosion after service\u003c\/td\u003e\n\u003ctd\u003eExcessive interpass temp; using ER308 instead of ER308L\u003c\/td\u003e\n\u003ctd\u003eMonitor interpass temp ≤ 350 °F; confirm ER308L (not ER308) specification\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeld pool too fluid (burn-through on thin sheet)\u003c\/td\u003e\n\u003ctd\u003eVoltage too high for gauge; spray transfer on thin material\u003c\/td\u003e\n\u003ctd\u003eReduce voltage 1–2 V; switch to short-circuit mode; reduce wire feed speed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eLack of fusion\u003c\/td\u003e\n\u003ctd\u003eTravel speed too fast; voltage too low\u003c\/td\u003e\n\u003ctd\u003eSlow travel speed; increase voltage 1 V; use stringer beads for better fusion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eER308L vs. ER308LSi vs. ER309L — Choosing the Right Filler\u003c\/h3\u003e\n\u003cp\u003eThe 308 family of stainless MIG wires includes several variants serving different purposes:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER308L:\u003c\/strong\u003e Standard low-carbon filler for Type 304\/304L stainless. Maximum 0.03% carbon prevents sensitization. Best choice for structural fabrication, food service, pharmaceutical, and architectural stainless welding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER308LSi:\u003c\/strong\u003e Higher silicon (0.65–1.0%) version of ER308L. Improved arc stability, weld pool fluidity, and out-of-position performance. Preferred for thin sheet, MIG welding in short-circuit transfer, and appearance-critical applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER309L:\u003c\/strong\u003e Used for welding dissimilar metals — joining stainless steel to carbon steel, or as a butter layer. Higher alloy content prevents dilution from carbon steel from reducing corrosion resistance below acceptable levels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER316L:\u003c\/strong\u003e Contains 2–3% Mo for superior pitting resistance in chloride (marine, chemical processing) environments. Use for Type 316\/316L stainless applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHarris 308 stainless steel MIG welding alloy is available in multiple spool weights and wire diameters to match production volume. For thin sheet applications (0.025 in diameter), OEM panel fabrication, and pharmaceutical tubing, check Harris's full ER308L range. For austenitic stainless structural work, 0.035 in wire in the 30 lb spool is the most economical format.\u003c\/p\u003e","brand":"Harris","offers":[{"title":"0.025 in · 2 lb Spool","offer_id":44258827042967,"sku":"0030812","price":54.01,"currency_code":"USD","in_stock":true},{"title":"0.025 in · 10 lb Spool","offer_id":44258827862167,"sku":"0030815","price":241.01,"currency_code":"USD","in_stock":true},{"title":"0.030 in · 2 lb Spool","offer_id":44258835824791,"sku":"00308E2","price":33.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/harris-308-stainless-steel-mig-gmaw-welding-wire-0030815-harris-1.jpg?v=1753396811"}],"url":"https:\/\/weldingmart.com\/collections\/data-center-chilled-water-cooling-loop.oembed","provider":"WeldingMart.com","version":"1.0","type":"link"}