The Lincoln Electric Excalibur\u00ae 7018 MR\u00ae Stick Electrode (ED032590) represents the pinnacle of Shielded Metal Arc Welding (SMAW) technology for mild and low-alloy steels. Engineered with a specialized low-hydrogen coating, this 5\/32-inch diameter electrode meets the rigorous AWS E7018 H4R classification. The ‘H4’ designation certifies that the weld deposit contains less than 4mL of diffusible hydrogen per 100g of weld metal, significantly reducing the risk of hydrogen-induced cracking (cold cracking) in critical structural applications. The ‘R’ suffix denotes its superior moisture resistance, a crucial factor in maintaining low-hydrogen properties in humid environments.<\/p>\n
One of the standout features of the Excalibur 7018 MR is its proprietary coating formulation, which absorbs 60% less moisture than typical E7018 electrodes. This extended moisture resistance ensures that the electrodes remain compliant with low-hydrogen standards for longer periods after opening, reducing waste and the frequency of re-baking. Additionally, the coating is designed for extreme bendability. Unlike standard rods that may flake or crumble when bent for tight-access welds, the Excalibur coating remains intact, allowing welders to curve the rod to reach difficult joints without compromising arc stability or shielding integrity.<\/p>\n
Welders appreciate the Excalibur 7018 MR for its exceptional arc characteristics. It delivers a smooth, stable arc with minimal spatter, resulting in a clean weld puddle and excellent bead appearance. The slag is self-peeling or easily removable, which improves efficiency during multi-pass welding. The electrode operates effectively on both DC+ (130-210 Amps) and AC (140-210 Amps) polarities, providing versatility for various power sources. With a minimum tensile strength of 70,000 psi and excellent Charpy V-Notch impact toughness at low temperatures (-20\u00b0F), this electrode is the ideal choice for shipbuilding, pressure vessels, pipelines, and structural steel fabrication.<\/p>\n","protected":false},"excerpt":{"rendered":"Premium Low-Hydrogen Performance The Lincoln Electric Excalibur\u00ae 7018 MR\u00ae Stick Electrode (ED032590) represents the pinnacle of Shielded Metal Arc Welding (SMAW) technology for mild and low-alloy steels. Engineered with a specialized low-hydrogen coating, this 5\/32-inch diameter electrode meets the rigorous AWS E7018 H4R classification. The ‘H4’ designation certifies that the weld deposit contains less than… View Article<\/a>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[1961,1959],"product_tag":[],"class_list":{"0":"post-1793899","1":"product","2":"type-product","3":"status-publish","5":"product_cat-steel-electrodes","6":"product_cat-welding-wires-and-electrodes","7":"pa_amp-range-130-210amp","8":"pa_amp-range-75-130amp","9":"pa_aws-spec-e7018-1","10":"pa_aws-spec-e7018","11":"pa_brand-lincoln","12":"pa_diameter-4-0mm","13":"pa_length-14-in-350-mm","14":"pa_material-carbon-steel","15":"pa_packaging-description-10-lb-can","16":"pa_polarity-ac-dc","17":"pa_polarity-dc-ac","18":"pa_position-all","20":"first","21":"instock","22":"taxable","23":"shipping-taxable","24":"purchasable","25":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product\/1793899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/media?parent=1793899"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_brand?post=1793899"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_cat?post=1793899"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_tag?post=1793899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}