{"product_id":"lincoln-excalibur-7018-mr-stick-smaw-welding-rod","title":"Lincoln Electric Excalibur 7018 Stick Electrode","description":"\u003c!-- PER-161 v1 parent body — auto-rendered from grade card lincoln-excalibur-7018-mr-stick-smaw-welding-rod on 2026-05-20 --\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eLincoln Excalibur 7018 MR Low-Hydrogen Stick Electrode\u003c\/strong\u003e is a low-hydrogen iron-powder basic-coated moisture-resistant SMAW electrode classified to \u003cstrong\u003eAWS A5.1\/A5.1M E7018 H4R\u003c\/strong\u003e. It is engineered for code-quality fabrication on mild and low-alloy steels where diffusible hydrogen control, excellent puddle visibility, and superior out-of-position operability are required — making it a benchmark choice for power generation, petrochemical, and structural work. The H4R designation, combined with Lincoln Electric's proprietary moisture-resistant coating technology, delivers up to 60% less moisture pickup versus competitive E7018 electrodes, reducing the risk of hydrogen-induced cracking in demanding field and shop environments.\u003c\/p\u003e\n\n\u003cdiv class=\"per161-tldr\"\u003e\n  \u003ch2\u003eKey takeaways\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e AWS A5.1\/A5.1M E7018 H4R\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e All-position low-hydrogen welding on mild steel and low-alloy steel in structural, pressure vessel, and process piping applications\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePolarity:\u003c\/strong\u003e DC+ or AC\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePositions:\u003c\/strong\u003e All positions except vertical down\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable diameters:\u003c\/strong\u003e 3\/32 in, 1\/8 in, 5\/32 in, 3\/16 in, 7\/32 in, 1\/4 in\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAWS Classification: \u003cstrong\u003eAWS A5.1\/A5.1M E7018 H4R\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eCoating: Low-hydrogen iron-powder basic (lime-fluoride) coating with moisture-resistant H4R designation; formulated to resist moisture pickup up to 60% better than competitive E7018 electrodes\u003c\/li\u003e\n  \u003cli\u003ePolarity: DC reverse polarity (DCEP\/electrode positive) preferred for optimum arc stability; AC is also acceptable on machines with adequate open-circuit voltage; Lincoln publishes slightly higher AC amperage ranges than DC+ ranges\u003c\/li\u003e\n  \u003cli\u003eWelding positions: All positions including vertical-up and overhead, except vertical down; larger diameters (3\/16 in and above) recommended for flat and horizontal positions only\u003c\/li\u003e\n  \u003cli\u003eHydrogen designator: H4R (≤4 mL H₂\/100 g deposited weld metal; moisture-resistant coating — 60% less moisture pickup vs. competition)\u003c\/li\u003e\n  \u003cli\u003eTypical amperage: 70–110 A DC+ \/ 80–120 A AC (3\/32 in); 90–160 A DC+ \/ 100–160 A AC (1\/8 in); 130–210 A DC+ \/ 140–210 A AC (5\/32 in); 180–300 A DC+ \/ 200–300 A AC (3\/16 in); 250–330 A DC+ \/ 270–370 A AC (7\/32 in); 300–400 A DC+ \/ 325–420 A AC (1\/4 in)\u003c\/li\u003e\n  \u003cli\u003eCharpy V-notch impact: 27 J (20 ft·lbf) min @ -29 °C (-20 °F) per AWS E7018 H4R; typical 121–332 J (89–246 ft·lbf) @ -29 °C (-20 °F)\u003c\/li\u003e\n  \u003cli\u003eAvailable diameters: 3\/32 in, 1\/8 in, 5\/32 in, 3\/16 in, 7\/32 in, 1\/4 in\u003c\/li\u003e\n  \u003cli\u003ePack sizes: 8 lb Easy Open Can (3-Pack), 10 lb Easy Open Can (3-Pack), 50 lb Easy Open Can, 50 lb Easy Open Can (Buy America)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAvailable variants \u0026amp; part numbers\u003c\/h2\u003e\n\u003ctable class=\"per161-variants\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/32 in\u003c\/td\u003e\n\u003ctd\u003e8 lb Easy Open Can (3-Pack)\u003c\/td\u003e\n\u003ctd\u003eED033940\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/32 in\u003c\/td\u003e\n\u003ctd\u003e10 lb Easy Open Can (3-Pack)\u003c\/td\u003e\n\u003ctd\u003eED032588\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/32 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED028280\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/32 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can (Buy America)\u003c\/td\u003e\n\u003ctd\u003eED033868\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/8 in\u003c\/td\u003e\n\u003ctd\u003e10 lb Easy Open Can (3-Pack)\u003c\/td\u003e\n\u003ctd\u003eED032589\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/8 in\u003c\/td\u003e\n\u003ctd\u003e10 lb Easy Open Can (3-Pack)\u003c\/td\u003e\n\u003ctd\u003eED033838\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/8 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can (Buy America)\u003c\/td\u003e\n\u003ctd\u003eED033869\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/8 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED028281\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5\/32 in\u003c\/td\u003e\n\u003ctd\u003e10 lb Easy Open Can (3-Pack)\u003c\/td\u003e\n\u003ctd\u003eED033839\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5\/32 in\u003c\/td\u003e\n\u003ctd\u003e10 lb Easy Open Can (3-Pack)\u003c\/td\u003e\n\u003ctd\u003eED032590\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5\/32 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED028282\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5\/32 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED033870\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/16 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED028283\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3\/16 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can (Buy America)\u003c\/td\u003e\n\u003ctd\u003eED033871\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e7\/32 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED034307\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e7\/32 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED038367\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1\/4 in\u003c\/td\u003e\n\u003ctd\u003e50 lb Easy Open Can\u003c\/td\u003e\n\u003ctd\u003eED038368\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eExcalibur 7018 MR is purpose-built for code-driven all-position welding on mild and low-alloy steels:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStructural steel fabrication and erection (AWS D1.1 code work)\u003c\/li\u003e\n  \u003cli\u003ePressure vessel fabrication and repair (ASME Section VIII)\u003c\/li\u003e\n  \u003cli\u003ePower generation equipment and boiler components\u003c\/li\u003e\n  \u003cli\u003ePressure piping and pipefitting (ASME B31.1 \/ B31.3)\u003c\/li\u003e\n  \u003cli\u003ePetrochemical plant construction and maintenance\u003c\/li\u003e\n  \u003cli\u003eShipbuilding and marine structural assemblies\u003c\/li\u003e\n  \u003cli\u003eGeneral mild steel fabrication requiring low-hydrogen deposits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to use Excalibur 7018 MR\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eStore unopened cans in a clean, dry area; once opened, hold rods in a heated rod oven at 250–300°F until use to maintain H4R diffusible hydrogen levels.\u003c\/li\u003e\n  \u003cli\u003eIf electrodes have been exposed to atmosphere for more than a few hours after opening, recondition by baking at 500–550°F for 1 hour before use.\u003c\/li\u003e\n  \u003cli\u003eSet the welding machine to DC+ (electrode positive) for best arc stability and weld quality; AC is acceptable on smaller machines — use the AC amperage range in that case.\u003c\/li\u003e\n  \u003cli\u003eSelect amperage within the published range for the diameter in use: 70–110 A DC+ for 3\/32 in, 90–160 A DC+ for 1\/8 in, 130–210 A DC+ for 5\/32 in; for out-of-position work, dial to the lower one-third of the range.\u003c\/li\u003e\n  \u003cli\u003eStrike the arc with a brief tap-and-drag; maintain a short arc length (approximately equal to the electrode diameter) to minimize hydrogen pickup and spatter.\u003c\/li\u003e\n  \u003cli\u003eUse stringer beads or narrow weaves; limit weave width to 2–3× electrode diameter — the Excalibur 7018 MR's square coating burn-off and self-peeling slag facilitate clean multi-pass runs.\u003c\/li\u003e\n  \u003cli\u003eAllow each pass to cool to interpass temperature (≤300°F unless the WPS specifies otherwise); remove slag completely between passes; return unused rods to the heated oven after welding.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eExcalibur 7018 MR vs related grades\u003c\/h2\u003e\n\u003cp\u003eCompared to standard E6013 (rutile, mild steel), E7018 delivers approximately 10 ksi higher tensile strength and far lower diffusible hydrogen — making it mandatory for crack-sensitive, code-governed work where E6013 is inadequate. Compared to E7018-1 H4R (the tougher sibling with Charpy requirement at -46°C vs. E7018's -29°C), the standard 7018 MR is the more economical choice for applications that do not require assured toughness at temperatures below -20°F. Stepping up to E8018-C3 or E9018-M adds low-alloy or Ni-Mo alloying for higher tensile strength and better low-temperature toughness on alloy steels, but neither is needed for mild steel work where Excalibur 7018 MR provides the optimal balance of performance, operability, and value.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails class=\"per161-faq-item\"\u003e\n  \u003csummary\u003eWhat is the AWS classification of Lincoln Excalibur 7018 MR?\u003c\/summary\u003e\n  \u003cp\u003eThe Excalibur 7018 MR is classified AWS A5.1\/A5.1M E7018 H4R — a mild steel, low-hydrogen iron-powder electrode with a moisture-resistant coating that limits diffusible hydrogen to ≤4 mL per 100 g of deposited weld metal.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"per161-faq-item\"\u003e\n  \u003csummary\u003eCan Excalibur 7018 MR run on AC or DC?\u003c\/summary\u003e\n  \u003cp\u003eYes — it runs on both DC+ (electrode positive) and AC. DC+ is preferred for the smoothest arc and best mechanical properties. On AC, use the slightly higher amperage ranges published by Lincoln (e.g., 80–120 A AC vs. 70–110 A DC+ for 3\/32 in diameter).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"per161-faq-item\"\u003e\n  \u003csummary\u003eWhat does the MR (Moisture Resistant) designation mean?\u003c\/summary\u003e\n  \u003cp\u003eMR indicates the coating is specially formulated to resist moisture reabsorption from the atmosphere. Lincoln Electric's Excalibur 7018 MR picks up 60% less moisture than competitive E7018 electrodes, reducing the risk of hydrogen-induced cold cracking — especially important in humid or outdoor environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"per161-faq-item\"\u003e\n  \u003csummary\u003eDo I need to bake or recondition these electrodes before use?\u003c\/summary\u003e\n  \u003cp\u003eUnopened cans do not require baking if stored properly in a dry location. Once opened, hold rods in a heated rod oven at 250–300°F. If rods have been out of the oven for an extended period, recondition at 500–550°F for 1 hour to restore H4R hydrogen levels before use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"per161-faq-item\"\u003e\n  \u003csummary\u003eWhat positions can I weld in with Excalibur 7018 MR?\u003c\/summary\u003e\n  \u003cp\u003eAll positions except vertical down — including flat, horizontal, vertical-up, and overhead. For out-of-position work, set amperage to the lower portion of the published range for the diameter. Note that the larger diameters (3\/16 in and above) are best suited for flat and horizontal positions only.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003eShop \u003cstrong\u003eLincoln Excalibur 7018 MR Low-Hydrogen Stick Electrode\u003c\/strong\u003e at WeldingMart.com — competitive pricing, fast shipping, and the largest in-stock selection of Lincoln Electric SMAW consumables. Backed by Lincoln Electric's Q2 Lot® quality system — with actual deposit chemistry and mechanical test results available online — and the Excalibur brand's decades of proven performance as the industry's benchmark low-hydrogen stick electrode for structural, pressure vessel, and process piping applications.\u003c\/p\u003e\n\n\u003csection class=\"per161-internal-links\" aria-label=\"Related stick electrodes\"\u003e\n  \u003ch3\u003eRelated stick electrodes\u003c\/h3\u003e\n  \u003cul\u003e\n        \u003cli\u003e\u003ca href=\"\/collections\/stick-welding-electrodes-rods\"\u003estick welding electrodes\u003c\/a\u003e\u003c\/li\u003e\n        \u003cli\u003e\u003ca href=\"\/products\/harris-e7018-mild-steel-stick-smaw-welding-rod\"\u003eHarris E7018\u003c\/a\u003e\u003c\/li\u003e\n        \u003cli\u003e\u003ca href=\"\/products\/lincoln-7018-ac-rsp-stick-smaw-welding-rod\"\u003e7018-AC RSP\u003c\/a\u003e\u003c\/li\u003e\n        \u003cli\u003e\u003ca href=\"\/products\/lincoln-7018-ac-stick-smaw-welding-rod\"\u003eLincoln 7018-AC\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Lincoln Electric","offers":[{"title":"3\/32 in, 8 lb Easy Open Can (3-Pack)","offer_id":43638098362519,"sku":"ED033940","price":198.72,"currency_code":"USD","in_stock":true},{"title":"3\/32 in, 10 lb Easy Open Can (3-Pack)","offer_id":43638111043735,"sku":"ED032588","price":167.4,"currency_code":"USD","in_stock":true},{"title":"3\/32 in, 50 lb Easy Open Can","offer_id":43638082961559,"sku":"ED028280","price":244.8,"currency_code":"USD","in_stock":true},{"title":"3\/32 in, 50 lb Easy Open Can (Buy America)","offer_id":43638112485527,"sku":"ED033868","price":308.68,"currency_code":"USD","in_stock":true},{"title":"1\/8 in, 10 lb Easy Open Can (3-Pack) (ED032589)","offer_id":43638112354455,"sku":"ED032589","price":167.4,"currency_code":"USD","in_stock":true},{"title":"1\/8 in, 10 lb Easy Open Can (3-Pack) (ED033838)","offer_id":43638098428055,"sku":"ED033838","price":229.75,"currency_code":"USD","in_stock":true},{"title":"1\/8 in, 50 lb Easy Open Can (Buy America)","offer_id":43638112649367,"sku":"ED033869","price":287.96,"currency_code":"USD","in_stock":true},{"title":"1\/8 in, 50 lb Easy Open Can","offer_id":47611296383127,"sku":"ED028281","price":236.4,"currency_code":"USD","in_stock":true},{"title":"5\/32 in, 10 lb Easy Open Can (3-Pack) (ED033839)","offer_id":43638099017879,"sku":"ED033839","price":242.08,"currency_code":"USD","in_stock":true},{"title":"5\/32 in, 10 lb Easy Open Can (3-Pack) (ED032590)","offer_id":43638113599639,"sku":"ED032590","price":167.4,"currency_code":"USD","in_stock":true},{"title":"5\/32 in, 50 lb Easy Open Can (ED028282)","offer_id":43638084599959,"sku":"ED028282","price":236.4,"currency_code":"USD","in_stock":true},{"title":"5\/32 in, 50 lb Easy Open Can (ED033870)","offer_id":43638114713751,"sku":"ED033870","price":287.39,"currency_code":"USD","in_stock":true},{"title":"3\/16 in, 50 lb Easy Open Can (ED028283)","offer_id":43638085681303,"sku":"ED028283","price":240.0,"currency_code":"USD","in_stock":true},{"title":"3\/16 in, 50 lb Easy Open Can (Buy America)","offer_id":43638115434647,"sku":"ED033871","price":329.54,"currency_code":"USD","in_stock":true},{"title":"7\/32 in, 50 lb Easy Open Can (ED034307)","offer_id":43638120972439,"sku":"ED034307","price":230.96,"currency_code":"USD","in_stock":true},{"title":"7\/32 in, 50 lb Easy Open Can (ED038367)","offer_id":47647590875287,"sku":"ED038367","price":0.0,"currency_code":"USD","in_stock":true},{"title":"1\/4 in, 50 lb Easy Open Can","offer_id":47647590908055,"sku":"ED038368","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/lincoln-ed033940-excalibur-7018-mr-n-stick-smaw-welding-rod-332-14-in-3-8-lb-easy-open-cans-lincoln-electric.jpg?v=1765594687","url":"https:\/\/weldingmart.com\/products\/lincoln-excalibur-7018-mr-stick-smaw-welding-rod","provider":"WeldingMart.com","version":"1.0","type":"link"}