Merit LMC6 is a copper coated MIG wire that is an excellent choice for welding on metals with a medium to high presence of mill scale. With its high silicon and manganese deoxidizer levels, superior feed ability, excellent arc characteristics, excellent weld appearance and toe wetting, Merit LMC6 is the industry’s premium brand of MIG wires. Shielding gases include argon/carbon dioxide blends and straight carbon dioxide.