ED032589 - Lincoln Excalibur 7018 MR Stick Electrode 1/8" 30lb Carton

Premium Low-Hydrogen SMAW Electrode for Critical Applications

The Lincoln Electric Excalibur® 7018 MR® Stick Electrode (SKU: ED032589) represents the pinnacle of Shielded Metal Arc Welding (SMAW) technology for mild and low-alloy steels. Engineered to meet the rigorous demands of structural fabrication, pressure vessel construction, and heavy industrial maintenance, this electrode is defined by its superior metallurgical properties and operational consistency. The "MR" designation signifies its advanced Moisture Resistance, while the H4R classification confirms its capability to deposit weld metal with ultra-low diffusible hydrogen levels (less than 4mL per 100g), significantly reducing the risk of hydrogen-induced cracking (cold cracking) in thick-section or restrained weldments.

One of the defining technical characteristics of the Excalibur 7018 MR is its coating integrity. Unlike standard basic-coated electrodes, this product features a proprietary coating formulation that maintains adherence even when the electrode is bent. This "Extreme Bendability" allows operators to mechanically curve the electrode to access difficult-to-reach joints without the coating flaking or spalling, ensuring shielding gas protection is maintained throughout the weld. Furthermore, the electrode demonstrates 60% lower moisture pickup compared to standard E7018 electrodes when exposed to high humidity environments, providing a wider window of safe use after opening the package.

Operability is optimized for both DC+ and AC polarities. The 1/8-inch (3.2 mm) diameter electrode operates efficiently between 90 and 160 Amps on DC+, delivering a stable, crisp arc with excellent puddle control. The slag system is designed for easy release, often self-peeling, which minimizes post-weld cleaning time and reduces the risk of slag inclusions in multi-pass welds. This product is supplied in a 30 lb master carton containing three 10 lb "Easy Open" cans, ensuring freshness and convenient distribution on the job site.

Compliance and Certifications

The Excalibur 7018 MR meets or exceeds multiple international standards, making it a versatile choice for global projects. It conforms to AWS A5.1/A5.1M (E7018 H4R) and ASME SFA-5.1. It also holds approvals from major maritime and industrial bodies, including ABS (3YH5), Lloyd's Register (3YM H5), DNV-GL (3YH5), and CWB (E4918). These certifications validate its use in high-stress environments such as shipbuilding, offshore platforms, and power generation facilities.