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China YB 12LW 汽车车轮轮辋用热轧型钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12LW / 12LW
Category Grade Standard Region/Area Standard Content
Metals 12LW YB/T 5227 China 汽车车轮轮辋用热轧型钢

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

Element Min Max Similar
Cu - 0.3000 -
Ni - 0.3000 -
Cr - 0.3000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.2500 0.5500 -
Si - 0.2200 -
C - 0.1400 -
P - 0.0400 -
S - 0.0400 -
Mn 0.2500 0.5500 -
Si 0.1200 0.2200 -
C 0.0800 0.1400 -

Mechanical Properties of steel grade 12LW

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)
867 (≥) 691 (≥) 24 43 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade 12LW

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
14 - -     0.32 -  
723 179 - 11.3 411   -  
962 - 34 33.2   112 214

Heat Treatment of steel grade 12LW

Heat treated : 1553°C - 1918°C

Technological Curves of steel grade 12LW

Cross Reference Table (Equivalent Grade) of 12LW

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