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

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

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

Element Min Max Similar
V 0.1000 0.1800 -
Si 0.1700 0.3700 -
Mn 0.5000 0.8000 -
Cr 0.8000 1.1000 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade 40HFA

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)
413 (≥) 175 (≥) 33 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade 40HFA

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
12 - -     0.42 -  
688 473 - 13.3 333   -  
367 - 43 11.2   332 323

Heat Treatment of steel grade 40HFA

Heat treated : 1594°C - 1691°C

Technological Curves of steel grade 40HFA

Cross Reference Table (Equivalent Grade) of 40HFA

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