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Japan JIS SN490B 建筑结构用轧制钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SN490B / SN 490 B
Category Grade Standard Region/Area Standard Content
Metals SN 490 B JIS G3136 Japan 建筑结构用轧制钢

Chemical composition(mass fraction)(wt.%) of the SN 490 B

Element Min Max Similar
Si - 0.5500 -
S - 0.0150 -
P - 0.0300 -
Other - - -
Mn - 1.6500 -
C - 0.1800 -

Mechanical Properties of steel grade SN 490 B

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)
339 (≥) 319 (≥) 34 13 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade SN 490 B

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
22 - -     0.34 -  
543 658 - 14.3 213   -  
371 - 22 23.2   423 233

Heat Treatment of steel grade SN 490 B

Heat treated : 1359°C - 1567°C

Technological Curves of steel grade SN 490 B

Cross Reference Table (Equivalent Grade) of SN 490 B

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