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Global 企业标准 OH257 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: OH257 / OH257
Category Grade Standard Region/Area Standard Content
Metals OH257 -- Global

Chemical composition(mass fraction)(wt.%) of the OH257

Element Min Max Similar

Mechanical Properties of steel grade OH257

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)
858 (≥) 587 (≥) 34 13 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade OH257

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 - -     0.11 -  
246 154 - 11.3 434   -  
766 - 31 12.2   412 442

Heat Treatment of steel grade OH257

Heat treated : 1575°C - 1539°C

Technological Curves of steel grade OH257

Cross Reference Table (Equivalent Grade) of OH257

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