Harris 310-16 (1/8 x 14 in, 10 lb box / catalog 3101660) is an AWS A5.4/A5.4M E310-16 fully austenitic stainless steel SMAW electrode for ultra-high-temperature service and severe oxidizing atmospheres on DC+ (DCEP) in all positions. With a nominal composition of 25–28% Cr and 20–22% Ni, Type 310 is the highest-alloy commonly stocked austenitic stainless electrode — providing exceptional oxidation resistance at temperatures up to 2100°F (1150°C) and far superior high-temperature strength compared to Types 304, 308, 309, and 316. Harris 310-16 is the electrode for furnace walls, kiln furniture, flue ducts, radiant tubes, heat treating fixtures, and petrochemical heater applications where service temperatures exceed the capability of 309 or lower-alloy stainless grades.
AWS classification |
AWS A5.4/A5.4M E310-16 |
|---|---|
Coating type |
Lime/titania (-16 type) |
Polarity |
DC+ (DCEP) preferred; AC acceptable |
Welding positions |
All positions (F, H, V, OH) |
Weld metal Cr content |
25.0–28.0% Cr (exceptional oxidation resistance) |
Weld metal Ni content |
20.0–22.5% Ni (fully austenitic deposit) |
Max service temperature |
~2100°F (1150°C) continuous; ~2200°F (1205°C) intermittent |
Min tensile strength |
80,000 psi (552 MPa) |
Min yield strength |
62,000 psi (428 MPa) |
Elongation |
30% minimum |
Package size |
10 lb box |
Typical current range |
1/8 in: 60–100 A |
Manufacturer |
Harris Products Group |
Standards compliance |
AWS A5.4/A5.4M E310-16 |
Furnace and kiln fabrication: Radiant tubes, furnace walls, muffle furnaces, vacuum furnace components, and kiln furniture operating at continuous temperatures of 1800–2100°F where no other common stainless grade performs adequately
Heat treating fixtures and baskets: Fixtures for annealing, carburizing, and nitriding furnaces that cycle repeatedly through high temperatures where 309 stainless fatigues due to thermal cycling and oxidation
Flue ducts and stack components: High-temperature flue gas handling where the combination of heat and oxidizing/sulfurizing atmosphere demands maximum chromium content for sulfidation resistance
Petrochemical fired heater tubes and components: Reformer furnace hardware, cracking heater components, and radiant section fixtures in refinery fired heaters
Welding Type 310 and 310S stainless base metal: Matched-composition repair and fabrication of existing Type 310/310S stainless steel equipment
Nuclear and defense applications: High-temperature structural applications in nuclear plants and defense equipment where the fully austenitic microstructure and radiation tolerance of 310 stainless are specified
Amperage: 60–100 A for 1/8 in on DC+. Low heat input reduces hot cracking risk in fully austenitic 310 deposits. 310 stainless has no delta ferrite in the microstructure — fully austenitic deposits are more sensitive to hot cracking than duplex austenitic/ferritic deposits. Stringer beads only.
Hot cracking sensitivity: Type 310 weld metal is fully austenitic with virtually no ferrite — this means it is more prone to hot cracking (solidification cracking) than 308L or 309L deposits that contain ferrite. Minimize heat input, use stringer beads, control interpass temperature below 200°F (93°C) if possible, and avoid highly restrained joint designs.
Polarity: DC+ (DCEP) for best arc stability. AC acceptable per -16 designation.
High-temperature preheat: For repair of service-aged 310 stainless at high temperature, allow components to cool slowly before welding and follow the applicable code for preheat if required. Thermal shock on hot stainless components causes cracking.
Back step and intermittent welding: Use back-step technique and intermittent welding sequences to reduce heat buildup in the joint. Allow cooling between passes.
Store in sealed original packaging in dry conditions; separate from carbon steel electrodes
Dry at 300–400°F (150–200°C) for 1 hour if moisture exposure has occurred
This 10 lb box size is suitable for both production and MRO applications
Primary base metals: Type 310, 310S austenitic stainless steel; also acceptable for 309/309S when E310 overmatching is specified for the application service temperature
Not for standard 304/316 service: E310-16 is overmatched for standard food, chemical, or structural 304/316 stainless — use E308L or E316L instead; E310-16 costs significantly more and provides no benefit at service temperatures below 1400°F
Joint types: All groove and fillet configurations per ASME Section IX and AWS D1.6, with awareness of hot cracking sensitivity in restrained joints
What is E310-16 welding rod used for?
Harris 310-16 (E310-16) is used for ultra-high-temperature applications including furnace fabrication, kiln equipment, heat treating fixtures, radiant tubes, flue ducts, and petrochemical heater components where service temperatures of 1800–2100°F exceed the capability of Type 309 stainless. It is also the matched filler for welding Type 310 and 310S base metal.
What temperature can E310 stainless handle?
Type 310/310S stainless and E310 weld deposits maintain adequate oxidation resistance at continuous service temperatures up to approximately 2100°F (1150°C) and can tolerate intermittent excursions to 2200°F (1205°C). Above these temperatures, nickel-base alloys are required. Below approximately 1400°F, Type 309 stainless is generally sufficient and more cost-effective than Type 310.
What is the difference between E309 and E310 stainless electrodes?
E309 deposits contain ~23% Cr / 13% Ni; E310 deposits contain 25–28% Cr / 20–22% Ni. The higher alloy content of E310 provides superior oxidation resistance and hot-strength above approximately 2000°F. E309 is the standard for dissimilar metal welding and most high-temperature applications. E310 is reserved for extreme temperature service, Type 310 base metal, and applications where E309's oxidation resistance is insufficient.
Is E310 fully austenitic?
Yes — Type 310 weld metal is fully austenitic with essentially no delta ferrite. This provides excellent high-temperature ductility but means hot cracking sensitivity is higher than for duplex austenitic/ferritic deposits (E308L, E309L). Low heat input, stringer beads, and controlled interpass temperature are essential to prevent solidification cracking in E310 deposits.
Can E310-16 be used for dissimilar metal welding?
Yes, though E309L is more commonly specified for standard dissimilar stainless-to-carbon steel joints. E310-16 may be used for dissimilar joints when the service temperature exceeds E309's capability, or when the WPS specifies E310 overmatching for the specific application. The higher cost of E310 versus E309L makes the latter the standard choice for routine dissimilar metal work.
What does 3101660 mean in the product number?
Harris product number 3101660 identifies this as the E310-16 specification (310-16) in 1/8 in diameter, 14 in length, 10 lb box packaging. Harris catalog numbers incorporate the AWS classification, diameter, and pack size into a structured numeric code.
Does E310 stainless need post-weld heat treatment?
Post-weld heat treatment of E310 deposits is generally not performed in the same sense as for carbon steel (stress relief PWHT). For high-temperature service, solution annealing at 1900–2050°F (1038–1121°C) followed by water quench or rapid cooling may be performed to restore optimal ductility and corrosion resistance in the weld and HAZ if the joint geometry permits. For field repairs, as-welded condition is typical. Consult the applicable ASME or AWS code for your specific application requirements.
Browse all stick electrodes: Stick Welding Electrodes & Rods — compare with Harris 309-16 for standard high-temperature and dissimilar metal applications, or Harris 309L for low-carbon dissimilar welding in corrosion service.
Harris E310-16 stainless welding rods ship from WeldingMart — add this product to your cart to place your order. We stock E310-16 for high-temperature stainless and dissimilar-metal applications in power generation, heat treating, and furnace fabrication. Create a WeldingMart account to track your order and maintain a product history for purchasing and inventory management. In-stock orders ship same day. E310-16 is a specialty stainless electrode; we maintain stock specifically to serve professional fabricators who need this product on demand. Review your order at checkout to confirm electrode diameter and package quantity before completing your purchase.
When selecting stick electrodes, welders should reference the relevant welding standard and process documentation. Key technical considerations include furnace parts. Always consult the electrode manufacturer's data sheet and applicable AWS, ASME, or structural welding codes for your specific application. WeldingMart provides technical resources to support your electrode selection and welding process qualification.
When selecting stick electrodes, welders should reference the relevant welding standard and process documentation. Key technical considerations include furnace parts. Always consult the electrode manufacturer's data sheet and applicable AWS, ASME, or structural welding codes for your specific application. WeldingMart provides technical resources to support your electrode selection and welding process qualification.
Harris E310-16 is available in multiple electrode diameters. Selecting the correct diameter for your base metal thickness is critical for weld quality and penetration depth.
| Electrode Diameter | Base Metal Range | Amperage Range | Best Position |
|---|---|---|---|
| 1/8 in (3.2 mm) | 1/8 in to 3/8 in (3.2–9.5 mm) | 75–130 A | All positions |
The 1/8 in (3.2 mm) diameter is the most versatile option for general fabrication on material from 3/16 in to 3/8 in thickness. Use 3/32 in for sheet metal and thin sections where 1/8 in would cause excessive heat input. Use 5/32 in for heavier sections where higher deposition rates reduce total welding time. For most structural repair and field work, 1/8 in is the preferred starting diameter.
When ordering Harris E310-16 in 3/32 in, 1/8 in, or 5/32 in, select the correct diameter variant from the product page before adding to cart. Each diameter is a separate product variant with its own SKU — confirm you have selected the right 1/8 in, 3/32 in, or 5/32 in size before placing your order.
Additional technical considerations for Harris E310-16 include: electrode 1, stainless steel, e310 16, 310 16, stainless steel electrode, analysis, clad, usa, tensile strength. Welders should review the product data sheet for complete welding procedure specifications. Key process parameters such as preheat requirements, interpass temperature, and post-weld heat treatment requirements vary by base metal composition and application code requirements. Consult AWS, ASME, or applicable structural welding codes for code-compliant welding procedures.
For best results, store electrodes in a dry environment and use within manufacturer recommended timeframes after opening. Proper electrode storage and handling directly impacts weld quality — follow manufacturer guidance for oven temperatures and rod reconditioning procedures as applicable to this electrode classification.
Harris E310-16 is available in multiple electrode diameters. Selecting the correct diameter for your base metal thickness is critical for weld quality and penetration depth.
| Electrode Diameter | Base Metal Range | Amperage Range | Best Position |
|---|---|---|---|
| 1/8 in (3.2 mm) | 1/8 in to 3/8 in (3.2–9.5 mm) | 75–130 A | All positions |
The 1/8 in (3.2 mm) diameter is the most versatile option for general fabrication on material from 3/16 in to 3/8 in thickness. Use 3/32 in for sheet metal and thin sections where 1/8 in would cause excessive heat input. Use 5/32 in for heavier sections where higher deposition rates reduce total welding time. For most structural repair and field work, 1/8 in is the preferred starting diameter.
When ordering Harris E310-16 in 3/32 in, 1/8 in, or 5/32 in, select the correct diameter variant from the product page before adding to cart. Each diameter is a separate product variant with its own SKU — confirm you have selected the right 1/8 in, 3/32 in, or 5/32 in size before placing your order.
Additional technical considerations for Harris E310-16 include: electrode 1, e310 16, 310 16, stainless steel, stainless steel electrode, analysis, clad, usa. Welders should review the product data sheet for complete welding procedure specifications. Key process parameters such as preheat requirements, interpass temperature, and post-weld heat treatment requirements vary by base metal composition and application code requirements. Consult AWS, ASME, or applicable structural welding codes for code-compliant welding procedures.
For best results, store electrodes in a dry environment and use within manufacturer recommended timeframes after opening. Proper electrode storage and handling directly impacts weld quality — follow manufacturer guidance for oven temperatures and rod reconditioning procedures as applicable to this electrode classification.
Harris E310-16 is available in multiple electrode diameters. Selecting the correct diameter for your base metal thickness is critical for weld quality and penetration depth.
| Electrode Diameter | Base Metal Range | Amperage Range | Best Position |
|---|---|---|---|
| 1/8 in (3.2 mm) | 1/8 in to 3/8 in (3.2–9.5 mm) | 75–130 A | All positions |
The 1/8 in (3.2 mm) diameter is the most versatile option for general fabrication on material from 3/16 in to 3/8 in thickness. Use 3/32 in for sheet metal and thin sections where 1/8 in would cause excessive heat input. Use 5/32 in for heavier sections where higher deposition rates reduce total welding time. For most structural repair and field work, 1/8 in is the preferred starting diameter.
When ordering Harris E310-16 in 3/32 in, 1/8 in, or 5/32 in, select the correct diameter variant from the product page before adding to cart. Each diameter is a separate product variant with its own SKU — confirm you have selected the right 1/8 in, 3/32 in, or 5/32 in size before placing your order.
Additional technical considerations for Harris E310-16 include: electrode 1, e310 16, 310 16, stainless steel electrode. Welders should review the product data sheet for complete welding procedure specifications. Key process parameters such as preheat requirements, interpass temperature, and post-weld heat treatment requirements vary by base metal composition and application code requirements. Consult AWS, ASME, or applicable structural welding codes for code-compliant welding procedures.
For best results, store electrodes in a dry environment and use within manufacturer recommended timeframes after opening. Proper electrode storage and handling directly impacts weld quality — follow manufacturer guidance for oven temperatures and rod reconditioning procedures as applicable to this electrode classification.