SF-1A is a copper coated flux cored seamless wire for single or multi-pass welds on mild steel and higher strengths steels. Noted for its copper and seamless sheath giving it many outstanding benefits such as; Superior moisture, excellent surface rust protection, electrical arc transfer, absorption resistance, delivers flawless low diffusible hydrogen levels throughout the entire spool, much lower friction wear on liners and tips, extremely stable and pin point arc generation, excellent bead shape and appearance and ease of slag removal. It has very good deposit efficiency when used for flat and fillet welds of medium and heavy thickness plates while. It has been designed to be used with 75-80% Argon + balance CO2 mixed shield gas.