... into two kinds 300-400,250-300oC. Lead-free solder wire(Sn99.3Cu0.7) : alloy composition Sn-Cu0.7Solder features1.High strength ... .2mm . small diameter 0.3mm, 0.5mmAll specification :1.Tin-lead solder wire Sn70Pb30,Sn60Pb40,Sn55Pb45,Sn50Pb50,Sn45Pb55,Sn40Pb60,Sn30Pb702 ... .Lead-free solder wire Sn-Cu0.7, Sn-Cu3.0, Sn- ...