Phosphor Bronze Filler Wire A (AWS A5.7: ERCuSn-A) is a copper-tin based welding filler metal containing approx. 5% of tin and about 0.35% of phosphor as a kind of deoxidizer. This alloy has high strength and excellent wear and corrosion resistances due to the presence of tin in the alloy. It is suitable for both TIG and MIG welding processes and used for argon arc welding of copper based alloys and brazing of steel.
