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Global 企业标准 Grade12 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Grade12 / Grade 12
Category Grade Standard Region/Area Standard Content
Metals Grade 12 -- Global

Chemical composition(mass fraction)(wt.%) of the Grade 12

Element Min Max Similar
Ti - - -
O - 0.2500 -
Ni 0.6000 0.9000 -
N - 0.0300 -
Mo 0.2000 0.4000 -
H - 0.0150 -
Fe - 0.3000 -
C - 0.0800 -

Mechanical Properties of steel grade Grade 12

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)
454 (≥) 893 (≥) 34 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade Grade 12

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 - -     0.23 -  
511 766 - 14.3 231   -  
773 - 42 13.2   112 442

Heat Treatment of steel grade Grade 12

Heat treated : 1689°C - 1484°C

Technological Curves of steel grade Grade 12

Cross Reference Table (Equivalent Grade) of Grade 12

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