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Russia GOST 55S2GF Spring carbon and alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 55S2GF / 55S2GF
Category Grade Standard Region/Area Standard Content
Metals 55S2GF GOST 14959 Russia Spring carbon and alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 55S2GF

Element Min Max Similar
V 0.1000 0.1500 -
Si 1.5000 2.0000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.9500 1.2500 -
Cr - 0.3000 -
C 0.5200 0.6000 -

Mechanical Properties of steel grade 55S2GF

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)
165 (≥) 988 (≥) 33 43 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade 55S2GF

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
33 - -     0.12 -  
456 755 - 32.3 143   -  
447 - 32 24.2   123 323

Heat Treatment of steel grade 55S2GF

Heat treated : 1918°C - 1933°C

Technological Curves of steel grade 55S2GF

Cross Reference Table (Equivalent Grade) of 55S2GF

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