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X-Au79.5CuNiZn

China GJB X-Au79.5CuNiZn 贵金属及其合金丝、线、棒材规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X-Au79.5CuNiZn / X-Au79.5CuNiZn
Category Grade Standard Region/Area Standard Content
Metals X-Au79.5CuNiZn GJB 947A China 贵金属及其合金丝、线、棒材规范

Chemical composition(mass fraction)(wt.%) of the X-Au79.5CuNiZn

Element Min Max Similar
Au 79.0000 80.0000 -
Cu 17.5000 18.5000 -
Ni 1.3000 2.3000 -
Zn 0.4000 1.0000 -
Fe - 0.0500 -
Pb - 0.0050 -
Sb - 0.0050 -
Bi - 0.0050 -
Total Others - 0.2000 -
Au 78.5000 80.5000 -
Cu 17.5000 18.5000 -
Ni 1.3000 2.3000 -
Zn 0.3000 1.1000 -
Fe - 0.0500 -
Pb - 0.0050 -
Sb - 0.0050 -
Bi - 0.0050 -
Total Others - 0.2000 -

Mechanical Properties of steel grade X-Au79.5CuNiZn

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)
114 (≥) 718 (≥) 22 23 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade X-Au79.5CuNiZn

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
44 - -     0.34 -  
563 574 - 23.3 241   -  
879 - 11 34.2   413 112

Heat Treatment of steel grade X-Au79.5CuNiZn

Heat treated : 1224°C - 1941°C

Technological Curves of steel grade X-Au79.5CuNiZn

Cross Reference Table (Equivalent Grade) of X-Au79.5CuNiZn

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