The Lincoln Electric Excalibur 7018-1 MR (SKU: ED033312) is a premier Shielded Metal Arc Welding (SMAW) electrode designed for applications requiring superior weld integrity and mechanical properties. Classified as AWS E7018-1 H4R, this electrode features a specialized moisture-resistant (MR) coating that significantly reduces the rate of moisture absorption compared to standard low hydrogen rods. This characteristic is critical for preventing hydrogen-induced cracking (cold cracking) in high-strength steels and ensures the electrode maintains its H4R diffusible hydrogen rating (<4.0 mL\/100g) for extended periods under open atmospheric conditions.<\/p>\n
With a diameter of 2.5mm (approximately 3\/32 inch), this electrode is highly versatile, suitable for all-position welding including overhead and vertical-up. The “-1” suffix in the AWS classification denotes improved impact toughness, providing reliable Charpy V-Notch properties at temperatures as low as -45\u00b0C (-50\u00b0F). This makes the Excalibur 7018-1 MR an excellent choice for industries such as offshore fabrication, pressure vessel manufacturing, heavy structural steel, and power generation infrastructure where code compliance and ductility are paramount.<\/p>\n
Operable on both DCEP (Direct Current Electrode Positive) and AC (Alternating Current), the Excalibur platform is renowned for its exceptional arc characteristics. It delivers a soft, stable arc with minimal spatter, promoting a clean weld pool and excellent bead contour. The iron powder coating enhances deposition rates while facilitating a square coating burn-off, which helps focus the arc and improve penetration. Slag removal is self-peeling in many instances, reducing post-weld cleaning time and improving productivity in multi-pass welding scenarios.<\/p>\n
This product is supplied in a 50 lb (22.7 kg) hermetically sealed Easy Open Can, ensuring factory-fresh performance upon opening. It meets multiple agency approvals, including ABS, CWB, and Lloyd’s Register, validating its quality for marine and seismic applications.<\/p>\n","protected":false},"excerpt":{"rendered":"Lincoln Electric\u00ae Excalibur\u00ae low hydrogen, mild steel and low alloy stick electrodes designed to provide exceptional puddle control, a smooth arc, excellent strike and re-strike capabilities, self peeling slag and extremely low spatter levels.","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[1961,1959],"product_tag":[],"class_list":["post-1752541","product","type-product","status-publish","product_cat-steel-electrodes","product_cat-welding-wires-and-electrodes","pa_amp-range-75-110amp","pa_aws-spec-e7018-1","pa_brand-lincoln","pa_diameter-2-5mm-2","pa_diameter-2-5mm","pa_packaging-description-4kg-tube","pa_packaging-description-50lb-can-2","pa_polarity-ac-dc","pa_polarity-dc-ac-2","pa_position-all","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"\n