... materials in china. the main materials of BAg8CuPNiSn copper-based welding wire there are silver, copper, phosphorus, nickel, and tin, And the ... addition of silver can increase the fluidity of the welding wire, Phosphorus plays the role of brazing flux, the addition ... -resistant joints and wetting properties of the alloy. So this kind of welding wire has excellent brazing performance, can obtain good ...