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England B.S. C40RHL4 淬硬钢和回火钢.第2部分:非合金优质钢交付技术状态 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C40RHL4 / C40RHL4
Category Grade Standard Region/Area Standard Content
Metals C40RHL4 BS EN 10083-2 England 淬硬钢和回火钢.第2部分:非合金优质钢交付技术状态

Chemical composition(mass fraction)(wt.%) of the C40RHL4

Element Min Max Similar
Mo - 0.1000 -
Ni - 0.4000 -
Cr - 0.4000 -
P - 0.0300 -
S 0.0200 0.0400 -
Mn 0.5000 0.8000 -
Si - 0.4000 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade C40RHL4

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)
395 (≥) 822 (≥) 42 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade C40RHL4

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
23 - -     0.21 -  
944 492 - 22.3 244   -  
884 - 32 41.2   314 343

Heat Treatment of steel grade C40RHL4

Heat treated : 1885°C - 1592°C

Technological Curves of steel grade C40RHL4

Cross Reference Table (Equivalent Grade) of C40RHL4

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