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Q345S Grade D

China GB Q345SGradeD 水电站压力钢管用钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345SGradeD / Q345S Grade D
Category Grade Standard Region/Area Standard Content
Metals Q345S Grade D GB/T 31946 China 水电站压力钢管用钢板

Chemical composition(mass fraction)(wt.%) of the Q345S Grade D

Element Min Max Similar
Al 0.0150 - -
S - 0.0150 -
P - 0.0250 -
B - 0.0020 -
Cu - 0.3000 -
V - 0.0500 -
Nb - 0.0500 -
Ti - 0.0500 -
Mo - 0.0800 -
Cr - 0.1000 -
Ni - 0.2000 -
Mn 1.2000 1.6000 -
Si - 0.5000 -
C - 0.2000 -

Mechanical Properties of steel grade Q345S Grade D

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)
215 (≥) 616 (≥) 33 33 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade Q345S Grade D

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 - -     0.21 -  
536 876 - 11.3 442   -  
271 - 43 32.2   323 342

Heat Treatment of steel grade Q345S Grade D

Heat treated : 1479°C - 1851°C

Technological Curves of steel grade Q345S Grade D

Cross Reference Table (Equivalent Grade) of Q345S Grade D

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