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Global 企业标准 ST-70 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ST-70 / ST-70
Category Grade Standard Region/Area Standard Content
Metals ST-70 -- Global

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

Element Min Max Similar
Ti - - -
O - 0.3000 -
N - 0.0700 -
H - 0.0130 -
Fe - 0.3000 -
C - 0.1000 -

Mechanical Properties of steel grade ST-70

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)
133 (≥) 939 (≥) 41 13 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade ST-70

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 - -     0.11 -  
316 559 - 12.3 142   -  
444 - 34 42.2   113 423

Heat Treatment of steel grade ST-70

Heat treated : 1144°C - 1296°C

Technological Curves of steel grade ST-70

Cross Reference Table (Equivalent Grade) of ST-70

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