... QJ305 can work together with silver-based brazing alloys for copper and copper alloys, stainless steel, nickel alloys, diamond PCD at ... with brazing alloys on copper and copper alloy, steel and stainless steel, and carbide steel. It could dissolve oxides on the surface ... moisture-absorption. QJ302 paste is used for brazing of copper and copper alloys, stainless steel, carbon steel, hard metal within ...