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China NB 20MnMo 承压设备用碳素钢和合金锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnMo / 20MnMo
Category Grade Standard Region/Area Standard Content
Metals 20MnMo NB/T 47008 China 承压设备用碳素钢和合金锻件

Chemical composition(mass fraction)(wt.%) of the 20MnMo

Element Min Max Similar
S - 0.0150 -
P - 0.0250 -
Cu - 0.2500 -
Ni - 0.3000 -
Mo 0.2000 0.3500 -
Cr - 0.3000 -
Mn 1.1000 1.4000 -
Si 0.1500 0.4000 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade 20MnMo

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)
854 (≥) 396 (≥) 22 13 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade 20MnMo

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
41 - -     0.21 -  
388 813 - 24.3 433   -  
945 - 12 44.2   321 312

Heat Treatment of steel grade 20MnMo

Heat treated : 1329°C - 1212°C

Technological Curves of steel grade 20MnMo

Cross Reference Table (Equivalent Grade) of 20MnMo

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