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China CNS C4250R 铜及铜合金板及卷片 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C4250R / C 4250 R
Category Grade Standard Region/Area Standard Content
Metals C 4250 R CNS H 3132 China 铜及铜合金板及卷片

Chemical composition(mass fraction)(wt.%) of the C 4250 R

Element Min Max Similar
P - 0.3500 -
Zn - - -
Sn 1.5000 3.0000 -
Fe - 0.0500 -
Pb - 0.0500 -
Cu 87.0000 90.0000 -

Mechanical Properties of steel grade C 4250 R

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)
373 (≥) 726 (≥) 41 22 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade C 4250 R

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
32 - -     0.13 -  
459 834 - 43.3 344   -  
859 - 43 24.2   314 321

Heat Treatment of steel grade C 4250 R

Heat treated : 1648°C - 1382°C

Technological Curves of steel grade C 4250 R

Cross Reference Table (Equivalent Grade) of C 4250 R

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