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France AFNOR NF CuNi20 Semi-finished copper and copper alloy products. General purpose rolled copper-nickel products. and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CuNi20 / CuNi20
Category Grade Standard Region/Area Standard Content
Metals CuNi20 NF A51-112 France Semi-finished copper and copper alloy products. General purpose rolled copper-nickel products.

Chemical composition(mass fraction)(wt.%) of the CuNi20

Element Min Max Similar
Zn - 0.2000 -
Total Each - 0.1000 -
Si - 0.1000 -
S - 0.0200 -
Pb - 0.0200 -
Ni 19.0000 21.0000 -
Mn 0.1000 0.5000 -
Fe - 0.2500 -
Cu 78.0000 - -
C - 0.0500 -

Mechanical Properties of steel grade CuNi20

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)
727 (≥) 987 (≥) 33 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade CuNi20

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
21 - -     0.13 -  
746 332 - 44.3 342   -  
657 - 42 23.2   241 141

Heat Treatment of steel grade CuNi20

Heat treated : 1333°C - 1554°C

Technological Curves of steel grade CuNi20

Cross Reference Table (Equivalent Grade) of CuNi20

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