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Russia GOST 20H5ML Steel castings. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20H5ML / 20H5ML
Category Grade Standard Region/Area Standard Content
Metals 20H5ML GOST 977 Russia Steel castings. General specifications

Chemical composition(mass fraction)(wt.%) of the 20H5ML

Element Min Max Similar
Si 0.3500 0.7000 -
S - 0.0400 -
P - 0.0400 -
Mo 0.4000 0.6500 -
Mn 0.4000 0.6000 -
Cr 4.0000 6.5000 -
C 0.1500 0.2500 -

Mechanical Properties of steel grade 20H5ML

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)
971 (≥) 251 (≥) 42 32 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade 20H5ML

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
41 - -     0.24 -  
511 447 - 34.3 241   -  
536 - 13 33.2   231 213

Heat Treatment of steel grade 20H5ML

Heat treated : 1324°C - 1461°C

Technological Curves of steel grade 20H5ML

Cross Reference Table (Equivalent Grade) of 20H5ML

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