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China GB Q370qC 桥梁用结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q370qC / Q370q C
Category Grade Standard Region/Area Standard Content
Metals Q370q C GB/T 714 China 桥梁用结构钢

Chemical composition(mass fraction)(wt.%) of the Q370q C

Element Min Max Similar
C - 0.1800 -
Si - 0.5000 -
Mn 1.2000 1.6000 -
S - 0.0350 -
P - 0.0350 -
V - 0.0800 -
Ti - 0.0300 -
Si - 0.5500 -
S - 0.0250 -
P - 0.0300 -
Ni - 0.5000 -
Nb - 0.0600 -
N - 0.0120 -
Mo - 0.2000 -
Mn 1.0000 1.7000 -
Cu - 0.5500 -
Cr - 0.8000 -
C - 0.1800 -
B - 0.0040 -
Al 0.0150 - -

Mechanical Properties of steel grade Q370q C

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)
257 (≥) 193 (≥) 14 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade Q370q C

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
23 - -     0.11 -  
245 338 - 32.3 412   -  
553 - 22 44.2   141 121

Heat Treatment of steel grade Q370q C

Heat treated : 1795°C - 1313°C

Technological Curves of steel grade Q370q C

Cross Reference Table (Equivalent Grade) of Q370q C

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