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Germany DIN St70.2 普通结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St70.2 / St70.2
Category Grade Standard Region/Area Standard Content
Metals St70.2 DIN 17100 Germany 普通结构钢

Chemical composition(mass fraction)(wt.%) of the St70.2

Element Min Max Similar
N - 0.0090 -
P - 0.0500 -
S - 0.0500 -
C - 0.5000 -

Mechanical Properties of steel grade St70.2

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)
123 (≥) 897 (≥) 31 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade St70.2

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
31 - -     0.34 -  
249 938 - 12.3 234   -  
426 - 33 43.2   132 241

Heat Treatment of steel grade St70.2

Heat treated : 1716°C - 1257°C

Technological Curves of steel grade St70.2

Cross Reference Table (Equivalent Grade) of St70.2

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