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China 首钢Q/SG SS490B 结构用热连轧钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SS490B / SS490B
Category Grade Standard Region/Area Standard Content
Metals SS490B Q/SGZGS 316 China 结构用热连轧钢板和钢带

Chemical composition(mass fraction)(wt.%) of the SS490B

Element Min Max Similar
C - 0.2000 -
Si - 0.3500 -
Mn - 1.6000 -
P - 0.0350 -
S - 0.0350 -
Cu - 0.3000 -
Cr - 0.3000 -
Ni - 0.3000 -
N - 0.0080 -
B 0.0008 0.0020 -

Mechanical Properties of steel grade SS490B

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)
296 (≥) 791 (≥) 14 11 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade SS490B

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
14 - -     0.44 -  
844 829 - 14.3 414   -  
751 - 43 42.2   114 322

Heat Treatment of steel grade SS490B

Heat treated : 1423°C - 1164°C

Technological Curves of steel grade SS490B

Cross Reference Table (Equivalent Grade) of SS490B

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