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China GB R235 钢筋混凝土用热轧光圆钢筋 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: R235 / R235
Category Grade Standard Region/Area Standard Content
Metals R235 GB 13013 China 钢筋混凝土用热轧光圆钢筋

Chemical composition(mass fraction)(wt.%) of the R235

Element Min Max Similar
C 0.1400 0.2200 -
Si 0.1200 0.3000 -
Mn 0.3000 0.6500 -
S - 0.0500 -
P - 0.0450 -
Cr - 0.3000 -
Ni - 0.3000 -
Cu - 0.3000 -
N - 0.0080 -

Mechanical Properties of steel grade R235

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)
429 (≥) 473 (≥) 42 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade R235

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
24 - -     0.44 -  
778 936 - 42.3 413   -  
852 - 14 32.2   224 323

Heat Treatment of steel grade R235

Heat treated : 1664°C - 1696°C

Technological Curves of steel grade R235

Cross Reference Table (Equivalent Grade) of R235

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