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Global 企业标准 OH258 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: OH258 / OH258
Category Grade Standard Region/Area Standard Content
Metals OH258 -- Global

Chemical composition(mass fraction)(wt.%) of the OH258

Element Min Max Similar
Si - 0.2800 -
Ni - 0.2500 -
Mo - 0.9500 -
Mn - 0.8800 -
Cr - 0.2500 -
C - 0.7000 -

Mechanical Properties of steel grade OH258

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)
545 (≥) 378 (≥) 42 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade OH258

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
44 - -     0.44 -  
754 564 - 13.3 234   -  
571 - 21 12.2   444 132

Heat Treatment of steel grade OH258

Heat treated : 1793°C - 1563°C

Technological Curves of steel grade OH258

Cross Reference Table (Equivalent Grade) of OH258

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