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China 舞钢Q/WTB Q345qD 关于 WJX 024-2012 《港珠澳用钢板技术条件》的补充规定 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345qD / Q345qD
Category Grade Standard Region/Area Standard Content
Metals Q345qD WJX 024-1 China 关于 WJX 024-2012 《港珠澳用钢板技术条件》的补充规定

Chemical composition(mass fraction)(wt.%) of the Q345qD

Element Min Max Similar

Mechanical Properties of steel grade Q345qD

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)
489 (≥) 127 (≥) 43 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade Q345qD

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
31 - -     0.22 -  
757 376 - 33.3 143   -  
237 - 32 14.2   223 213

Heat Treatment of steel grade Q345qD

Heat treated : 1371°C - 1924°C

Technological Curves of steel grade Q345qD

Cross Reference Table (Equivalent Grade) of Q345qD

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