Lincoln Electric SuperArc L-56 .045" ER70S-6 MIG Wire, 44 lb Spool – ED021276 Product Description Lincoln Electric SuperArc® L-56® is a copper-coated solid MIG welding wire for mild steel fabrication and repair. Its high manganese and silicon deoxidizer content helps it handle steel with medium to heavy mill scale, while good weld-toe wetting supports a smooth bead appearance. Part number ED021276 supplies .045-inch wire on a 44 lb fiber spool for shop and production welding applications. Key Features ER70S-6 mild steel wire: Classified to AWS A5.18 for MIG welding applications. Mill scale tolerance: Manganese and silicon deoxidizers help accommodate medium to heavy mill scale. Copper-coated surface: Supports dependable arc starts and contact tip life. Smooth bead appearance: Good wetting helps the weld transition into the base material. Multiple transfer modes: Supports short-circuiting, globular, axial spray, and pulsed spray transfer with suitable equipment and settings.