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Germany DIN St70-2 Bright steel made from structural steel; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St70-2 / St 70-2
Category Grade Standard Region/Area Standard Content
Metals St 70-2 DIN 1652-2 Germany Bright steel made from structural steel; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the St 70-2

Element Min Max Similar
S - 0.0600 -
P - 0.0600 -
C - 0.5000 -
S - 0.0600 -
P - 0.0600 -
N - 0.0100 -
S - 0.0500 -
P - 0.0600 -
C - - 0.5000

Mechanical Properties of steel grade St 70-2

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)
717 (≥) 291 (≥) 23 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade St 70-2

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
34 - -     0.33 -  
579 343 - 13.3 211   -  
793 - 12 32.2   413 141

Heat Treatment of steel grade St 70-2

Heat treated : 1367°C - 1678°C

Technological Curves of steel grade St 70-2

Cross Reference Table (Equivalent Grade) of St 70-2

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