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Russia GOST 25H2NML Cold-resistant and wear-resistant steel castings. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25H2NML / 25H2NML
Category Grade Standard Region/Area Standard Content
Metals 25H2NML GOST 21357 Russia Cold-resistant and wear-resistant steel castings. General specifications

Chemical composition(mass fraction)(wt.%) of the 25H2NML

Element Min Max Similar

Mechanical Properties of steel grade 25H2NML

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)
851 (≥) 968 (≥) 22 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 25H2NML

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
23 - -     0.11 -  
891 996 - 32.3 231   -  
235 - 32 12.2   332 132

Heat Treatment of steel grade 25H2NML

Heat treated : 1642°C - 1726°C

Technological Curves of steel grade 25H2NML

Cross Reference Table (Equivalent Grade) of 25H2NML

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