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B Ag40CuZnSnNi634/640

China GB BAg40CuZnSnNi634/640 贵金属及其合金钎料 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals B Ag40CuZnSnNi634/640 GB/T 18762 China 贵金属及其合金钎料

Chemical composition(mass fraction)(wt.%) of the B Ag40CuZnSnNi634/640

Element Min Max Similar
Zn 33.0000 37.0000 -
Total Others - 0.2000 -
Pb - 0.0500 -
Mn 4.5000 5.5000 -
Cu - - -
Cd - 0.0500 -
Ag 19.5000 20.5000 -

Mechanical Properties of steel grade B Ag40CuZnSnNi634/640

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
737 (≥) 953 (≥) 44 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade B Ag40CuZnSnNi634/640

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
22 - -     0.34 -  
986 246 - 31.3 312   -  
275 - 42 11.2   124 214

Heat Treatment of steel grade B Ag40CuZnSnNi634/640

Heat treated : 1371°C - 1294°C

Technological Curves of steel grade B Ag40CuZnSnNi634/640

Cross Reference Table (Equivalent Grade) of B Ag40CuZnSnNi634/640

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