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China 宝钢Q/BQB St33 结构用热连轧钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St33 / St33
Category Grade Standard Region/Area Standard Content
Metals St33 Q/BQB 303 China 结构用热连轧钢板及钢带

Chemical composition(mass fraction)(wt.%) of the St33

Element Min Max Similar
P - 0.0400 -
S - 0.0400 -

Mechanical Properties of steel grade St33

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)
355 (≥) 383 (≥) 33 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade St33

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 - -     0.21 -  
857 764 - 21.3 113   -  
387 - 31 23.2   124 411

Heat Treatment of steel grade St33

Heat treated : 1517°C - 1338°C

Technological Curves of steel grade St33

Cross Reference Table (Equivalent Grade) of St33

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