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Global 企业标准 St12Q and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St12Q / St12Q
Category Grade Standard Region/Area Standard Content
Metals St12Q -- Global

Chemical composition(mass fraction)(wt.%) of the St12Q

Element Min Max Similar
Si - 0.0500 -
S - 0.0250 -
P - 0.0300 -
Mn 0.4000 1.0000 -
C - 0.1000 -
Al 0.0200 - -

Mechanical Properties of steel grade St12Q

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)
794 (≥) 394 (≥) 32 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade St12Q

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 - -     0.34 -  
932 172 - 43.3 232   -  
856 - 22 12.2   324 412

Heat Treatment of steel grade St12Q

Heat treated : 1538°C - 1476°C

Technological Curves of steel grade St12Q

Cross Reference Table (Equivalent Grade) of St12Q

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