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China NB 20MnMoD 低温承压设备用低合金钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnMoD / 20MnMoD
Category Grade Standard Region/Area Standard Content
Metals 20MnMoD NB/T 47009 China 低温承压设备用低合金钢锻件

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

Element Min Max Similar
S - 0.0120 -
P - 0.0250 -
Cu - 0.2500 -
Cr - 0.3000 -
Mo 0.2000 0.3500 -
Ni - 0.5000 -
Mn 1.1000 1.4000 -
Si 0.1500 0.4000 -
C 0.1600 0.2200 -

Mechanical Properties of steel grade 20MnMoD

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)
534 (≥) 829 (≥) 14 13 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 20MnMoD

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
24 - -     0.22 -  
626 589 - 42.3 332   -  
496 - 11 11.2   414 444

Heat Treatment of steel grade 20MnMoD

Heat treated : 1311°C - 1936°C

Technological Curves of steel grade 20MnMoD

Cross Reference Table (Equivalent Grade) of 20MnMoD

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