Grade National Chemical Composition Melting Temperature ℃ features / use 
 Ag Cu Zn 
 Ag10 9.0 ~ 11.0 52.0 ~ 54.0 815 ~ 850 cheap margin, but the higher brazing temperature, the plastic connector is poor, requiring a lower level suitable for copper brazing alloys, steel, etc. 
 Ag25 B-Ag25CuZn 24.0 ~ 26.0 40.0 ~ 42.0 700 ~ 800 margin slightly higher brazing temperature, wetting and sealing ability, the system suitable for brazing alloys, steel, etc. 
 Ag45 B-Ag45CuZn 44.0 ~ 46.0 29.0 ~ 31.0 665 ~ 745 allowance for large gap brazed joints, commonly used in brazing galvanized steel. 
 Ag50 B-Ag50CuZn 49.0 ~ 51.0 33.0 ~ 35.0 690 ~ 775 has a good margin of temperature flow and ability to fill the interval, brazing, high strength, good plasticity, for brazing copper and copper alloy, steel and stainless steel 
 Ag65 64.0 ~ 66.0 19.0 ~ 21.0 685 ~ 720 low melting point margin, overflow of good solder joints smooth surface, brazed joints with good strength and ductility performance requirements for high brazing copper and copper alloy, steel and stainless steel