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SM490A is a kind of welding structural steel in the standard JIS G3106 . SM490A commonly used in the engineering and construction industry, SM490A offers low yield and tensile strength and is supplied with a variety of treatments .SM490A steel plates usual supplied in control rolled delivery condition.
Standard : JIS G3106
Dimension range : 1.5mm -620mm x 1000mm-4000mm x 1000mm-18000m
JIS G3106 SM490A steel platel Mechanical Properties :
Mechanical Properties
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Grade |
Tensile test (transverse) |
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Upper yield strength MPa |
Tensile strength MPa |
Elongation% |
180°Bend test b≥35mm Inner diameter |
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L=50 b=25 |
L=200 b=40 |
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Nominal thickness mm |
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Nominal thickness mm |
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≤16 |
>16 |
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≤5 |
>5~16 |
>16 |
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SM490A |
≥325 |
≥315 |
490~610 |
≥22 |
≥17 |
≥21 |
3a |
SM490A structural steel sheet Chemical composition(%) :
Chemical composition
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Grade |
Thickness mm |
C ≤ |
Si ≤ |
Mn ≤ |
P ≤ |
S ≤ |
SM490A |
≤50 |
0.20 |
0.55 |
1.60 |
0.035 |
0.035 |
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50~200 |
0.22 |
- |
- |
- |
- |
Ceq ≤ 0.44 (≤50mm thickness) 0.47 (50~100mm thickness)
Ceq(%)=C+Mn/6+Si/24+Ni/40+Cr/5+Mo/4+V/14
Delivery Status : Rolling, rolling or normalizing probe
SM490A structural steel sheet application :
SM490A is used for the structure part with high requirement of mechanical property and welding performance in building, bridge, ship , automobile, peritoneum container and construction vehicles.
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