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China YB 12MnVq 桥梁用碳素钢及普通低合金钢 钢板技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12MnVq / 12MnVq
Category Grade Standard Region/Area Standard Content
Metals 12MnVq YB 168 China 桥梁用碳素钢及普通低合金钢 钢板技术条件

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

Element Min Max Similar
Cu - 0.2500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Cr - 0.2500 -
Mn 0.5000 0.8000 -
Si 0.1700 0.3700 -
C 0.4200 0.4800 -

Mechanical Properties of steel grade 12MnVq

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)
142 (≥) 913 (≥) 41 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade 12MnVq

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
22 - -     0.12 -  
929 692 - 14.3 223   -  
325 - 13 11.2   242 332

Heat Treatment of steel grade 12MnVq

Heat treated : 1671°C - 1329°C

Technological Curves of steel grade 12MnVq

Cross Reference Table (Equivalent Grade) of 12MnVq

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