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China GB Q345FTD 风力发电塔用结构钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345FTD / Q345FT D
Category Grade Standard Region/Area Standard Content
Metals Q345FT D GB/T 28410 China 风力发电塔用结构钢板

Chemical composition(mass fraction)(wt.%) of the Q345FT D

Element Min Max Similar
W 1.7000 2.2000 -
V 0.1000 0.2000 -
Si 0.7000 1.0000 -
S - 0.0200 -
P - 0.0300 -
Mn 0.1500 0.4500 -
Cr 0.9000 1.2000 -
C 0.4500 0.5500 -

Mechanical Properties of steel grade Q345FT 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)
979 (≥) 424 (≥) 13 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade Q345FT 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
14 - -     0.32 -  
825 154 - 31.3 424   -  
611 - 24 21.2   414 341

Heat Treatment of steel grade Q345FT D

Heat treated : 1287°C - 1282°C

Technological Curves of steel grade Q345FT D

Cross Reference Table (Equivalent Grade) of Q345FT D

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