... element, Melting, mixing, testing, molding ,bright solder Lead-free solder wire(Sn96.5Ag3Cu0.5):Alloy compositionSn96.5Ag3Cu0.5, good copper, tin ... wettability and electrical conductivity, thermal conductivity , solder joints bright,reliable ,Solderwire can beclassified according to the different inner core solid ... not tangle. When soldering tip less residue. Lead-free solder wire(Sn96.5Ag3Cu0.5)