Brazing Alloys AVAILABILITY AND DIMENSIONS OF SILVER BRAZING ALLOYS SILVER BRAZING ALLOYS – PHOSPHORUS BEARING GRADES Comments Alloys suitable for Copper-Copper brazing without Flux. For Brass, the use of Flux is recommended. SILVER 15 – Low Melting Point. Good flow. SILVER 6 – Low melting range where temperature is a factor, Fast flow. SILVER 5 – Same as SILVER 15 and economic. SILVER 2 – Fill moderate gaps in poorly f