ED037106 - Lincoln Metalshield MC-70 XLS 0.045 Metal-Cored Wire 33lb Spool

Technical Overview of Lincoln Metalshield MC-70 XLS

The Lincoln Electric Metalshield® MC-70 XLS™ (SKU: ED037106) is a premium metal-cored wire designed to meet the rigorous demands of modern industrial fabrication. Engineered with a proprietary low-silicon formulation, this consumable addresses one of the most persistent challenges in metal-cored welding: the formation of silicon islands. By significantly reducing these deposits, the MC-70 XLS streamlines the welding process, particularly in multi-pass applications where inter-pass cleaning can create production bottlenecks. This wire is classified under AWS A5.18 as E70C-6M H4, indicating its suitability for mild steel applications requiring high tensile strength and low diffusible hydrogen levels.

The 0.045-inch diameter wire is supplied on a 33 lb fiber spool, making it compatible with standard industrial wire feeders. It operates optimally with shielding gas mixtures ranging from 75% to 95% Argon with a CO2 balance. The metal-cored construction allows for higher current densities compared to solid wires, resulting in superior deposition rates and faster travel speeds. This makes the MC-70 XLS an ideal choice for robotic and hard automation cells where cycle time is critical. The arc characteristics are exceptionally stable, providing excellent wetting action that ensures a flat, smooth bead profile with minimal spatter.

From a metallurgical perspective, the "XLS" designation highlights the wire's capability to produce welds with minimal surface impurities. This is crucial for components that will undergo painting or coating immediately after welding, as it reduces the mechanical preparation required. The H4 hydrogen designation ensures resistance to hydrogen-induced cracking, providing structural integrity in critical fabrications. Industrial sectors such as automotive manufacturing, heavy equipment production, and general structural steel fabrication will find the Metalshield MC-70 XLS to be a high-efficiency solution that balances weld quality with operational throughput.