ED033312 - Lincoln Excalibur 7018-1 MR 2.5mm Stick Electrode (50lb Can)

Premium Low Hydrogen Stick Electrode for Critical Applications

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.

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°C (-50°F). 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.

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.

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.