ED030394 - Lincoln Metalshield MC-6 1/16" Metal Core Wire 33lb

Lincoln Electric Metalshield MC-6: E70C-6M Metal-Cored Wire

Lincoln Electric's Metalshield MC-6 is an AWS E70C-6M H4 metal-cored wire formulated for high-performance gas metal arc welding (GMAW-C). This 1/16" (1.6mm) diameter wire is engineered to deliver high deposition rates and superior arc stability, making it a top choice for automatic and robotic welding applications. It operates with a mixed shielding gas (typically 75-95% Argon with the balance CO2), providing a smooth spray transfer that ensures deep penetration and excellent sidewall fusion.

The MC-6 chemistry is designed to handle fast follow applications, maintaining a stable arc even at high travel speeds. This makes it particularly suitable for the automotive industry and high-volume fabrication of mild steel. The wire exhibits excellent deoxidizing action, allowing it to handle light mill scale and surface contaminants better than many solid wires, although clean base metal is always recommended for optimal results. With an H4 diffusible hydrogen rating, it offers resistance to hydrogen-induced cracking.

Technical Specifications & Performance

The Metalshield MC-6 offers a tensile strength typically in the range of 72-80 ksi (depending on gas mix) and excellent impact toughness. Its metal powder core allows for a wider current density profile compared to solid wire, resulting in a broader penetration profile and reduced risk of lack of fusion. The 33lb spool fits standard industrial wire feeders and is precision-wound to ensure consistent feeding without tangling.

• AWS Classification: E70C-6M H4
• Shielding Gas: 75-95% Argon / Balance CO2
• Polarity: DC+ (DCEP)
• Typical Applications: Robotics, automotive exhaust, chassis, structural fabrication.

Welders will appreciate the "soft" arc feel and the forgiving nature of the puddle, which wets out smoothly to produce flat, aesthetically pleasing welds with minimal reinforcement. This wire is an excellent upgrade for shops looking to transition from solid wire to metal-cored to achieve higher deposition efficiencies.