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Description

China GBT Q235GJ-D China structural steel and alloy steel and Q235GJ-D Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q235GJ-D
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q235GJ-D GBT China China structural steel and alloy steel
L52350
L52950
L53550
L54600
L52951
L52952
L53451
L53452
L53901
Q235GJ-C

Chemical composition(mass fraction)(wt.%) of the Q235GJ-D

C(%) Si(%) Mn(%) P(%) S(%) Al(%)
Max 0.18 Max 0.35 0.60-1.20 0.025 0.015 0.015

Mechanical Properties of steel grade Q235GJ-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)
149 (≥) 697 (≥) 31 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade Q235GJ-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
21 - -     0.33 -  
982 974 - 34.3 133   -  
356 - 21 44.2   223 434

Heat Treatment of steel grade Q235GJ-D

Heat treated : 1332°C - 1529°C

Technological Curves of steel grade Q235GJ-D

Cross Reference Table (Equivalent Grade) of Q235GJ-D

Grade Standard Country Application
Q235GJ-D GBT China China structural steel and alloy steel

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