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Russia GOST 38HN3MFA Structural alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 38HN3MFA / 38HN3MFA
Category Grade Standard Region/Area Standard Content
Metals 38HN3MFA GOST 4543 Russia Structural alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 38HN3MFA

Element Min Max Similar
V 0.1000 0.1800 -
Si 0.1700 0.3700 -
S - 0.0350 -
P - 0.0350 -
Ni 3.0000 3.5000 -
N - 0.0080 -
Mo 0.3500 0.4500 -
Mn 0.2500 0.5000 -
Cu - 0.3000 -
Cr 1.2000 1.5000 -
C 0.3300 0.4000 -

Mechanical Properties of steel grade 38HN3MFA

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)
238 (≥) 985 (≥) 21 44 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade 38HN3MFA

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 - -     0.12 -  
487 514 - 12.3 424   -  
799 - 33 21.2   311 234

Heat Treatment of steel grade 38HN3MFA

Heat treated : 1493°C - 1354°C

Technological Curves of steel grade 38HN3MFA

Cross Reference Table (Equivalent Grade) of 38HN3MFA

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