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Russia GOST 20H2G2SR Hot-rolled steel for reinforcement of ferroconcrete structures. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20H2G2SR / 20H2G2SR
Category Grade Standard Region/Area Standard Content
Metals 20H2G2SR GOST 5781 Russia Hot-rolled steel for reinforcement of ferroconcrete structures. Specifications

Chemical composition(mass fraction)(wt.%) of the 20H2G2SR

Element Min Max Similar
Ti 0.0200 0.0800 -
Si 0.7500 1.5500 -
S - 0.0400 -
P - 0.0400 -
Ni - 0.3000 -
Mn 1.4000 1.8000 -
Cu - 0.3000 -
Cr 1.4000 1.8000 -
C 0.1600 0.2600 -
B 0.0010 0.0070 -
Al - 0.0500 -

Mechanical Properties of steel grade 20H2G2SR

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)
769 (≥) 895 (≥) 41 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 20H2G2SR

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 - -     0.12 -  
467 251 - 24.3 242   -  
948 - 13 23.2   322 131

Heat Treatment of steel grade 20H2G2SR

Heat treated : 1192°C - 1419°C

Technological Curves of steel grade 20H2G2SR

Cross Reference Table (Equivalent Grade) of 20H2G2SR

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