silver content
Equivalent to the national standard and American brand number
Main chemical components
Performance and Application
melting point
(Celsius)
National Standard (GT)
American Standard
（AWS）
BAG-18BSn
18%
Silver copper zinc tin alloy
Good wetting and filling properties, suitable for welding materials such as copper, copper alloys, steel, etc
770-810
BAG-25B
25%
BAg25CuZn and HL302
Silver copper zinc alloy
Good wetting and filling properties, suitable for welding materials such as copper, copper alloys, steel, etc
700-800
BAG-25BSn
25%
BAg25CuZnSn
BAg-37
Silver copper zinc tin alloy
Improved wetting and filling properties, suitable for welding materials such as copper, copper alloys, steel, etc
680-780
BAG-30B
30%
BAg30CuZn
BAg-20
Silver copper zinc alloy
The joint has good toughness and is suitable for brazing materials such as copper, copper alloys, steel, etc
677-766
BAG-35B
35%
BAg-35
Silver copper zinc alloy
The joint has good toughness and is suitable for brazing materials such as copper, copper alloys, steel, etc
621-732
BAG-35Sn
35%
BAg34CuZn
Silver copper zinc tin alloy
Has good fluidity and is more suitable for welding ferritic and non ferritic steels
620-730
BAG-40B
40%
Silver copper zinc alloy
Has good liquidity, permeability, and toughness,
677-732
BAG-40BNi
40%
HL309
BAg-4
Silver copper zinc nickel alloy
Has good corrosion resistance and is suitable for welding stainless steel, nickel based alloys, and tungsten carbide
620-730
BAG-45B
45%
BAg45CuZn and HL303
BAg-5
Silver copper zinc alloy
Has good fluidity and the ability to fill gaps, the brazed joint surface is smooth, the joint strength is high, and the impact load resistance is good
677-732
BAG-45Sn
45%
BAg45CuZnSn and HL325
BAg-36
Silver copper zinc tin alloy
Has good fluidity and the ability to fill gaps, with excellent brazing process performance
670-780
BAG-50B
50%
BAg50CuZn and HL304
BAg-5
Silver copper zinc alloy
The brazed joint can withstand multiple vibration loads and is suitable for brazing copper, copper alloys, steel, etc. It is commonly used for brazing band saws
BAG-50SnNi
50%
HL324
Silver copper zinc tin nickel alloy
The surface of the weld seam is smooth, and the strength of the brazed joint is higher than that of general silver brazing. It is suitable for brazing copper and copper alloys, steel and stainless steel, quenched and tempered steel, Kovar alloys, etc
BAG-56Sn
56%
BAg56CuZnSnHL321
BAg-7
Silver copper zinc tin alloy
Replacing cadmium with tin, due to its non-toxic nature, this brazing material is particularly suitable for brazing food equipment, etc
BAG-65B
65%
BAg65CuZn and HL306
BAg-9
Silver copper zinc alloy
Good fluidity, commonly used for brazing food utensils, band saws, instruments, etc
BAG-72B
72%
Silver copper alloy
Not easily volatile element, with good fluidity on copper and nickel, and good conductivity among silver brazing materials, suitable for manufacturing electronic tubes, vacuum devices, and electronic components.
