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Russia GOST 25HGM Structural alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25HGM / 25HGM
Category Grade Standard Region/Area Standard Content
Metals 25HGM GOST 4543 Russia Structural alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 25HGM

Element Min Max Similar
Si 0.1700 0.3700 -
Mo 0.2000 0.3000 -
Mn 0.9000 1.2000 -
Cr 0.9000 1.2000 -
C 0.2300 0.2900 -

Mechanical Properties of steel grade 25HGM

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)
965 (≥) 869 (≥) 23 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade 25HGM

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 - -     0.12 -  
319 364 - 11.3 313   -  
175 - 23 32.2   411 314

Heat Treatment of steel grade 25HGM

Heat treated : 1666°C - 1717°C

Technological Curves of steel grade 25HGM

Cross Reference Table (Equivalent Grade) of 25HGM

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