ED032603 - Lincoln Excalibur 9018M 1/8" Stick Electrode (30lb Carton)

High-Performance Low Alloy Stick Electrode

The Lincoln Electric Excalibur® 9018M MR® is a premium Shielded Metal Arc Welding (SMAW) electrode designed for joining high-strength, low-alloy steels. Engineered to meet the rigorous AWS E9018M H4R classification, this electrode delivers weld deposits with a minimum tensile strength of 620 MPa (90 ksi). It is the ideal choice for critical structural applications where mechanical integrity and resistance to cracking are paramount. The "MR" designation signifies its Moisture Resistant coating, which significantly reduces the rate of moisture pickup in humid environments, thereby minimizing the risk of hydrogen-induced cracking—a critical factor in heavy industrial fabrication.

Technical Specifications and Reliability

This 1/8-inch (3.2 mm) diameter electrode is formulated to provide consistent mechanical properties and X-ray quality welds. The H4R classification ensures that the diffusible hydrogen content is kept below 4 mL per 100g of weld metal, offering superior resistance to delayed cracking. The electrode operates effectively on both DC+ (DCEP) and AC polarity, providing flexibility for various power sources. It is packaged in Lincoln's signature Easy Open Cans, with this SKU (ED032603) representing a master carton containing three 10 lb cans, totaling 30 lbs of product. This packaging ensures the electrodes remain factory-fresh and ready for immediate use, often eliminating the need for pre-conditioning in holding ovens if used within the specified exposure limits.

Industrial Applications

The Excalibur® 9018M MR® is specifically tailored for industries requiring high-strength fabrication. It is widely utilized in the construction of pressure vessels, heavy structural steel erection, shipbuilding, and tank fabrication. Its ability to maintain high impact toughness at lower temperatures makes it suitable for demanding environments. By choosing this electrode, procurement specialists and engineers ensure compliance with stringent welding codes while providing welders with a consumable that supports productivity through its reliable performance characteristics.