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Belgium NBN C40 淬火和回火钢 - 第2部分:非合金钢的交货技术条件。 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C40 / C 40
Category Grade Standard Region/Area Standard Content
Metals C 40 NBN EN 10083-2 Belgium 淬火和回火钢 - 第2部分:非合金钢的交货技术条件。

Chemical composition(mass fraction)(wt.%) of the C 40

Element Min Max Similar

Mechanical Properties of steel grade C 40

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)
413 (≥) 736 (≥) 32 33 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade C 40

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
33 - -     0.32 -  
449 189 - 23.3 121   -  
773 - 22 42.2   122 234

Heat Treatment of steel grade C 40

Heat treated : 1335°C - 1123°C

Technological Curves of steel grade C 40

Cross Reference Table (Equivalent Grade) of C 40

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