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Russia GOST 45H Structural alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 45H / 45H
Category Grade Standard Region/Area Standard Content
Metals 45H GOST 4543 Russia Structural alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 45H

Element Min Max Similar
Si 0.1700 0.3700 -
Mn 0.5000 0.8000 -
Cr 0.8000 1.1000 -
C 0.4100 0.4900 -
Si 0.1700 0.3700 -
Mn 0.5000 0.8000 -
Cr 0.8000 1.1000 -
C 0.4100 0.4900 -

Mechanical Properties of steel grade 45H

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)
342 (≥) 546 (≥) 41 33 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade 45H

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 - -     0.43 -  
355 116 - 43.3 443   -  
431 - 41 22.2   424 441

Heat Treatment of steel grade 45H

Heat treated : 1538°C - 1493°C

Technological Curves of steel grade 45H

Cross Reference Table (Equivalent Grade) of 45H

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