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China GB Q420bz 热轧U型钢板桩 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q420bz / Q420bz
Category Grade Standard Region/Area Standard Content
Metals Q420bz GB/T 20933 China 热轧U型钢板桩

Chemical composition(mass fraction)(wt.%) of the Q420bz

Element Min Max Similar

Mechanical Properties of steel grade Q420bz

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)
257 (≥) 735 (≥) 43 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade Q420bz

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
21 - -     0.43 -  
499 695 - 22.3 321   -  
266 - 23 42.2   131 232

Heat Treatment of steel grade Q420bz

Heat treated : 1214°C - 1954°C

Technological Curves of steel grade Q420bz

Cross Reference Table (Equivalent Grade) of Q420bz

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