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China 宝钢Q/BQB Q235 一般结构用焊管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q235 / Q235
Category Grade Standard Region/Area Standard Content
Metals Q235 Q/BQB 290 China 一般结构用焊管

Chemical composition(mass fraction)(wt.%) of the Q235

Element Min Max Similar

Mechanical Properties of steel grade Q235

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)
336 (≥) 637 (≥) 31 32 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade Q235

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
23 - -     0.33 -  
751 897 - 41.3 112   -  
372 - 43 22.2   122 414

Heat Treatment of steel grade Q235

Heat treated : 1688°C - 1656°C

Technological Curves of steel grade Q235

Cross Reference Table (Equivalent Grade) of Q235

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