Type

Ingredient (WT%)

Melting point(ºC)

Application scenario

leaded tin wire

Sn63Pb37

183

Suitable for demanding circuit boards, such as: high-precision instruments, electronic industry, communications, micro-technology, aviation industry and other products welding

Sn60Pb40

191

Sn55Pb45

200

Sn50Pb50

212

Applicable to the requirements of ordinary circuit boards, such as: home appliances, electrical instrumentation, automotive electronics, hardware and electrical appliances and other products welding

Sn45Pb55

227

Sn40Pb60

247

Sn35Pb65

247

Suitable for relatively low requirements of the circuit board, such as: hardware equipment, automotive water tank lighting bulbs, cable connectors and other products welding

Sn30Pb70

257

Sn25Pb75

268

Sn20Pb80

280

Lead-free tin wiree

Sn96.5Ag3.0Cu0.5

217

Applicable to high-end electronic products, export quality of electronic, electrical industrial products

Sn99Ag0.3Cu0.7

227

Sn99.7Ag0.3

227

Sn99.95

227

Applicable to all kinds of circuit board plating and used in tin furnaces with excessive copper to reduce copper content

Sn42Bi58

138

Thermal fuses for thermal fuses, thermal protectors, thermal fuses