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Global 企业标准 40ACR 低合金钢冷打材 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40ACR / 40ACR
Category Grade Standard Region/Area Standard Content
Metals 40ACR -- Global 低合金钢冷打材

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

Element Min Max Similar
C 0.4000 0.4400 -
Si - 0.1000 -
Mn 0.6000 0.9000 -
P - 0.0300 -
S - 0.0300 -
Cr 0.2000 0.4000 -
Al 0.0100 - -

Mechanical Properties of steel grade 40ACR

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)
753 (≥) 877 (≥) 24 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade 40ACR

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
31 - -     0.44 -  
979 264 - 42.3 131   -  
412 - 21 14.2   212 213

Heat Treatment of steel grade 40ACR

Heat treated : 1233°C - 1386°C

Technological Curves of steel grade 40ACR

Cross Reference Table (Equivalent Grade) of 40ACR

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