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Description

China Q345q C Bridge structure with steel and Q345q C Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q345q C
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q345q C China Bridge structure with steel
Q235
Q235 B
Q235 C
Q235 D
Q255 A
Q255 B
Q275
Q235q C
Q235q D
Q345q E

Chemical composition(mass fraction)(wt.%) of the Q345q C

C(%) Si(%) Mn(%) P(%) S(%)
≤0.20 ≤0.60 1.00~1.60 ≤0.035 ≤0.035

Mechanical Properties of steel grade Q345q 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)
638 (≥) 629 (≥) 24 21 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade Q345q 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
43 - -     0.22 -  
535 916 - 23.3 413   -  
528 - 42 41.2   313 424

Heat Treatment of steel grade Q345q C

Heat treated : 1498°C - 1593°C

Technological Curves of steel grade Q345q C

Cross Reference Table (Equivalent Grade) of Q345q C

Grade Standard Country Application
Q345q E China Bridge structure with steel
Q345q C China Bridge structure with steel
Q345q GBT China China structural steel and alloy steel
Q345q GBT China China structural steel and alloy steel
Q345q GBT China China structural steel and alloy steel

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