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China 唐山国丰Q/TGF SM490YB 结构用热轧钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SM490YB / SM490YB
Category Grade Standard Region/Area Standard Content
Metals SM490YB Q/TGF 303 China 结构用热轧钢带

Chemical composition(mass fraction)(wt.%) of the SM490YB

Element Min Max Similar
C - 0.2000 -
Si - 0.5500 -
Mn - 1.6000 -
P - 0.3500 -
S - 0.3500 -
Cu - 0.2000 -
Cr - 0.1500 -
Ni - 0.1500 -

Mechanical Properties of steel grade SM490YB

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)
533 (≥) 835 (≥) 31 42 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade SM490YB

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 - -     0.23 -  
859 252 - 24.3 242   -  
745 - 21 33.2   124 432

Heat Treatment of steel grade SM490YB

Heat treated : 1634°C - 1811°C

Technological Curves of steel grade SM490YB

Cross Reference Table (Equivalent Grade) of SM490YB

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