... in china. the main materials of BAg8CuPNiSn copper-based welding wire there are silver, copper, phosphorus, nickel, and tin, And the content of ... nickel and tin will reduce the melting point of the welding wire. Nickel also can improve the heat resisting, rust-resistant ... and wetting properties of the alloy. So this kind of welding wire has excellent brazing performance, can obtain good brazing joint. ...