... 3Ag-0.7Cu, flux core wire,welding,single or three cores of rosin, excellent wettability, fluidity, flux-cored solder wire Spec: Lead free: ... , Sn50Pb50, Sn45Pb55, Sn40Pb60, Sn35Pb65, Sn30Pb70, Sn25P75 flux-cored solder wire: Product NameAlloy compostion (WT %) Use TempZSLF01Sn: 99.5 Cu: 0 ... : 96.5 Ag:3 Cu:0.5217-220 Resin-core solder wire(SGS)Feature:Even and bright welding spot, favorable diffusion ...