Washington Alloy 4047 (commonly referred to as “718 aluminum” or AlSi12) is an aluminum filler metal which contains approximately 12% silicon. This alloy is commonly used not only in MIG or TIG applications, but also as a general purpose brazing alloy providing a free-flowing filler metal and good corrosion resistance. Washington Alloy 4047 is recommended for welding or brazing aluminum alloy: 1060, 1350, 3003, 3004, 3005, 5005, 5050, 6053, 6061, 6951, 7005, and cast alloys 710.0 and 711.0. Washington Alloy 4047 has an approximate melting range of 1070-1080oF and the post anodizing color tint is grayish-black.