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Russia GOST 70S3A Spring carbon and alloy steel bars. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 70S3A / 70S3A
Category Grade Standard Region/Area Standard Content
Metals 70S3A GOST 14959 Russia Spring carbon and alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%) of the 70S3A

Element Min Max Similar

Mechanical Properties of steel grade 70S3A

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)
273 (≥) 555 (≥) 42 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade 70S3A

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
12 - -     0.23 -  
813 184 - 44.3 232   -  
233 - 24 44.2   244 143

Heat Treatment of steel grade 70S3A

Heat treated : 1315°C - 1651°C

Technological Curves of steel grade 70S3A

Cross Reference Table (Equivalent Grade) of 70S3A

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