... copper-copper and copper-brass applications Details of Phos Copper Brazing Alloy welding rod:1) P: 6.5-7.5%, Cu ... fluency2) Low cost3) Perfect performance4) For resistance brazing, gas flame brazing, high frequency induction brazing and furnace brazing5) Joint strength high and conductivity ... gray, returning to original copper color once dipped into a 10% sulfuric solution BCuP-2 brazing rod