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Description

China CNS SM490YA China Taiwan Structural steel and SM490YA Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SM490YA
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SM490YA CNS China China Taiwan Structural steel
SS34
SS400
SS490
SS540
SM400A
SM400B
SM400C
SM490A
SM490B
SM490C

Chemical composition(mass fraction)(wt.%) of the SM490YA

C(%) Si(%) Mn(%) P(%) S(%)
Max 0.20 Max 0.55 Max 1.60 0.035 0.035

Mechanical Properties of steel grade SM490YA

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)
167 (≥) 778 (≥) 41 13 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade SM490YA

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
44 - -     0.14 -  
643 941 - 12.3 221   -  
685 - 33 23.2   321 441

Heat Treatment of steel grade SM490YA

Heat treated : 1372°C - 1162°C

Technological Curves of steel grade SM490YA

Cross Reference Table (Equivalent Grade) of SM490YA

Grade Standard Country Application
SM490YA CNS China China Taiwan Structural steel

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