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Russia GOST 12HGFL Cold-resistant and wear-resistant steel castings. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12HGFL / 12HGFL
Category Grade Standard Region/Area Standard Content
Metals 12HGFL GOST 21357 Russia Cold-resistant and wear-resistant steel castings. General specifications

Chemical composition(mass fraction)(wt.%) of the 12HGFL

Element Min Max Similar
V 0.0500 0.1000 -
Si 0.3000 0.5000 -
S - 0.0200 -
RE 0.0200 0.0500 -
P - 0.0200 -
Ni - 0.3000 -
Mn 0.9000 1.4000 -
Cu - 0.3000 -
Cr 0.2000 0.6000 -
C 0.1000 0.1600 -

Mechanical Properties of steel grade 12HGFL

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)
535 (≥) 998 (≥) 11 44 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade 12HGFL

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
21 - -     0.34 -  
253 899 - 31.3 444   -  
869 - 42 22.2   432 242

Heat Treatment of steel grade 12HGFL

Heat treated : 1322°C - 1411°C

Technological Curves of steel grade 12HGFL

Cross Reference Table (Equivalent Grade) of 12HGFL

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