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Japan JIS STKR490 通用结构碳钢方管,矩形管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STKR490 / STKR 490
Category Grade Standard Region/Area Standard Content
Metals STKR 490 JIS G3466 Japan 通用结构碳钢方管,矩形管

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

Element Min Max Similar
Si - 0.5500 -
S - 0.0400 -
P - 0.0400 -
Mn - 1.5000 -
C - 0.1800 -

Mechanical Properties of steel grade STKR 490

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)
847 (≥) 963 (≥) 14 12 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade STKR 490

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 - -     0.32 -  
547 992 - 13.3 132   -  
314 - 31 32.2   443 132

Heat Treatment of steel grade STKR 490

Heat treated : 1134°C - 1246°C

Technological Curves of steel grade STKR 490

Cross Reference Table (Equivalent Grade) of STKR 490

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