Formula of high-strength environment-friendly silver-saving brazing filler metal

The invention discloses a formula of high-strength environment-friendly silver-saving brazing filler metal. The high-strength environment-friendly silver-saving brazing filler metal is prepared from,by weight, 20-25% of Ag, 15-25.5% of Cu, 30-45% of Zn, 1.0-1.2% of In, 0.9-1.5% of Sn, 0.8-1.8% of Mn, 0.7-2.0% of rare earth and the balance additive. The high-strength environment-friendly silver-saving brazing filler metal has the advantages of being good in weld joint performance and better in welding flux wettability and fluidity compared with traditional brazing filler metal. 本发明公开了种高强度环保节银钎料的配方，其采用的原材料为：银Ag、铜Cu、锌Zn、铟In、锡Sn、锰Mn、稀土、辅助剂；所述原材料的重量份配比为：银Ag20-25％、铜Cu15-25.5％、锌Zn30-45％、铟In1.0-1.2％、锡Sn0.9-1.5％、锰Mn0.8-1.8％、稀土0.7-2.0％、辅助剂余量；此款高强度环保节银钎料具有焊缝性能好，焊料润湿性和流动性优于传统钎料的优点。