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France AFNOR NF 38Cr2 淬火和回火钢 - 第1部分:一般交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 38Cr2 / 38 Cr 2
Category Grade Standard Region/Area Standard Content
Metals 38 Cr 2 NF EN 10083-1 France 淬火和回火钢 - 第1部分:一般交货技术条件

Chemical composition(mass fraction)(wt.%) of the 38 Cr 2

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.5000 0.8000 -
Cr 0.4000 0.6000 -
C 0.3500 0.4200 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.5000 0.8000 -
Cr 0.4000 0.6000 -
C 0.3500 0.4200 -

Mechanical Properties of steel grade 38 Cr 2

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)
673 (≥) 681 (≥) 31 31 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 38 Cr 2

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 - -     0.34 -  
872 957 - 23.3 433   -  
275 - 14 22.2   331 143

Heat Treatment of steel grade 38 Cr 2

Heat treated : 1717°C - 1699°C

Technological Curves of steel grade 38 Cr 2

Cross Reference Table (Equivalent Grade) of 38 Cr 2

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