Used to weld base metals of similar composition, brass and to weld this copper alloy to steel. Silicon bronze is frequently used in GTAW "brass welding" of coated sheet steels. Produced to conform the requirements of AWS A5.7 & AWS A5.27. Can be used in all welding positions. Alloy embossed on each end for easy identification after use. Used to weld base metals of similar composition, brass and to weld this copper alloy to steel. ANSI/AWS A 5.7 & ASME SFA-5.7 ERCuSi-A. Packaged in a 10 lb box.