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STKN 490 B

Japan JIS STKN490B 建筑结构能用碳钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STKN490B / STKN 490 B
Category Grade Standard Region/Area Standard Content
Metals STKN 490 B JIS G3475 Japan 建筑结构能用碳钢管

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

Element Min Max Similar

Mechanical Properties of steel grade STKN 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)
575 (≥) 936 (≥) 12 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade STKN 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
11 - -     0.31 -  
258 253 - 12.3 424   -  
878 - 33 13.2   142 221

Heat Treatment of steel grade STKN 490 B

Heat treated : 1778°C - 1873°C

Technological Curves of steel grade STKN 490 B

Cross Reference Table (Equivalent Grade) of STKN 490 B

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