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Japan JIS SM490A 銲接結構用軋鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SM490A / SM 490 A
Category Grade Standard Region/Area Standard Content
Metals SM 490 A JIS G3106 Japan 銲接結構用軋鋼料

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

Element Min Max Similar
Si - 0.5500 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.6000 -
CEV - - -
C - 0.2200 -

Mechanical Properties of steel grade SM 490 A

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)
856 (≥) 933 (≥) 24 43 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade SM 490 A

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 - -     0.12 -  
659 291 - 42.3 324   -  
994 - 33 14.2   443 433

Heat Treatment of steel grade SM 490 A

Heat treated : 1666°C - 1498°C

Technological Curves of steel grade SM 490 A

Cross Reference Table (Equivalent Grade) of SM 490 A

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