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Russia GOST 20N2M Structural alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20N2M / 20N2M
Category Grade Standard Region/Area Standard Content
Metals 20N2M GOST 4543 Russia Structural alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 20N2M

Element Min Max Similar
Si 0.1700 0.3700 -
Ni 1.5000 1.9000 -
Mo 0.2000 0.3000 -
Mn 0.4000 0.7000 -
C 0.1700 0.2500 -

Mechanical Properties of steel grade 20N2M

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)
151 (≥) 867 (≥) 41 41 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 20N2M

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
34 - -     0.32 -  
429 355 - 31.3 431   -  
713 - 41 11.2   223 443

Heat Treatment of steel grade 20N2M

Heat treated : 1144°C - 1926°C

Technological Curves of steel grade 20N2M

Cross Reference Table (Equivalent Grade) of 20N2M

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