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China 唐山国丰Q/TGF DD12 冷轧及冷成型用热轧钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DD12 / DD12
Category Grade Standard Region/Area Standard Content
Metals DD12 Q/TGF 302 China 冷轧及冷成型用热轧钢带

Chemical composition(mass fraction)(wt.%) of the DD12

Element Min Max Similar
Ni - 0.1500 -
Cr - 0.1500 -
Cu - 0.2000 -
C - 0.0900 -
Si - 0.0700 -
Mn - 0.4000 -
P - 0.0300 -
S - 0.0300 -
Als 0.0200 - -

Mechanical Properties of steel grade DD12

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)
883 (≥) 754 (≥) 21 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade DD12

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
34 - -     0.12 -  
219 591 - 13.3 233   -  
956 - 21 11.2   412 213

Heat Treatment of steel grade DD12

Heat treated : 1596°C - 1887°C

Technological Curves of steel grade DD12

Cross Reference Table (Equivalent Grade) of DD12

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