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China GB Q345HD1 核电站用碳素钢和低合金钢钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345HD1 / Q345HD1
Category Grade Standard Region/Area Standard Content
Metals Q345HD1 GB 30814 China 核电站用碳素钢和低合金钢钢板

Chemical composition(mass fraction)(wt.%) of the Q345HD1

Element Min Max Similar
Al - - -
B - - -
Ti - - -
V - - -
Nb - - -
Cu - 0.3500 -
Ni - 0.3000 -
Cr - 0.3000 -
Mo - 0.1200 -
S - 0.0200 -
P - 0.0200 -
Mn - 1.3500 -
Si 0.1500 0.4000 -
Si - 0.4000 -
C - 0.2300 -

Mechanical Properties of steel grade Q345HD1

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)
282 (≥) 182 (≥) 31 32 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade Q345HD1

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
13 - -     0.43 -  
359 525 - 44.3 141   -  
492 - 33 42.2   443 344

Heat Treatment of steel grade Q345HD1

Heat treated : 1557°C - 1332°C

Technological Curves of steel grade Q345HD1

Cross Reference Table (Equivalent Grade) of Q345HD1

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