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Global 企业标准 ST31 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ST31 / ST31
Category Grade Standard Region/Area Standard Content
Metals ST31 -- Global

Chemical composition(mass fraction)(wt.%) of the ST31

Element Min Max Similar

Mechanical Properties of steel grade ST31

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)
779 (≥) 311 (≥) 23 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 231

Physical Properties of steel grade ST31

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
22 - -     0.32 -  
338 552 - 41.3 344   -  
228 - 41 23.2   132 424

Heat Treatment of steel grade ST31

Heat treated : 1134°C - 1315°C

Technological Curves of steel grade ST31

Cross Reference Table (Equivalent Grade) of ST31

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