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China YB 40CrNiMo 汽轮机螺栓用合金结构钢棒 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40CrNiMo / 40CrNiMo
Category Grade Standard Region/Area Standard Content
Metals 40CrNiMo YB/T 158 China 汽轮机螺栓用合金结构钢棒

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

Element Min Max Similar
Cu - 0.3000 -
Ni 1.2500 1.6500 -
Mo 0.1500 0.2500 -
Cr 0.6000 0.9000 -
S - 0.0250 -
P - 0.0250 -
Mn 0.5000 0.8000 -
Si 0.1700 0.3700 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade 40CrNiMo

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)
641 (≥) 315 (≥) 22 42 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade 40CrNiMo

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 - -     0.23 -  
697 355 - 12.3 224   -  
235 - 33 41.2   221 441

Heat Treatment of steel grade 40CrNiMo

Heat treated : 1357°C - 1218°C

Technological Curves of steel grade 40CrNiMo

Cross Reference Table (Equivalent Grade) of 40CrNiMo

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