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Russia GOST 20H2N4A Structural alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20H2N4A / 20H2N4A
Category Grade Standard Region/Area Standard Content
Metals 20H2N4A GOST 4543 Russia Structural alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 20H2N4A

Element Min Max Similar

Mechanical Properties of steel grade 20H2N4A

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)
731 (≥) 877 (≥) 12 44 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade 20H2N4A

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
32 - -     0.14 -  
735 393 - 13.3 143   -  
231 - 33 32.2   211 323

Heat Treatment of steel grade 20H2N4A

Heat treated : 1657°C - 1535°C

Technological Curves of steel grade 20H2N4A

Cross Reference Table (Equivalent Grade) of 20H2N4A

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