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

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

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

Element Min Max Similar
V 0.0600 0.1200 -
Si 0.2000 0.4000 -
S - 0.0300 -
P - 0.0300 -
Ni 0.7000 1.0000 -
Mo 0.1500 0.2500 -
Mn 0.7000 1.2000 -
Cr - 0.3000 -
C 0.1400 0.2200 -

Mechanical Properties of steel grade 20GNMFL

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)
118 (≥) 559 (≥) 41 23 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 20GNMFL

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
31 - -     0.24 -  
963 746 - 34.3 111   -  
147 - 11 34.2   243 123

Heat Treatment of steel grade 20GNMFL

Heat treated : 1356°C - 1289°C

Technological Curves of steel grade 20GNMFL

Cross Reference Table (Equivalent Grade) of 20GNMFL

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