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Russia GOST 40HN2MA Structural alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40HN2MA / 40HN2MA
Category Grade Standard Region/Area Standard Content
Metals 40HN2MA GOST 4543 Russia Structural alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 40HN2MA

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

Mechanical Properties of steel grade 40HN2MA

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)
799 (≥) 952 (≥) 41 42 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade 40HN2MA

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 - -     0.33 -  
949 549 - 14.3 334   -  
458 - 31 23.2   334 341

Heat Treatment of steel grade 40HN2MA

Heat treated : 1632°C - 1935°C

Technological Curves of steel grade 40HN2MA

Cross Reference Table (Equivalent Grade) of 40HN2MA

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