SM490 High Strength Low Alloy Steel Plate
SM490 steel plate is a Japanese standard low alloy high strength steel, the implementation of the Japanese standard JISG3106 special technical conditions, SM490 model SM is expressed in the meaning of the Japanese standard high-strength version, and 490 indicates the strength of the steel plate. SM490 steel plate with high strength, high toughness, fatigue resistance, impact resistance, wear resistance, corrosion resistance, seismic welding, and easy to process performance and other characteristics, often used in buildings, bridges, ships, rail vehicles, oil storage tanks and other buildings requiring advanced weldability. SM490 steel plate is often used in buildings, bridges, ships, rail vehicles, petroleum storage tanks, containers and other buildings that require advanced weldability.
SM490 Series low alloy steel chemical composition
| Grade | Thickness mm | C | Si | Mn | P | S |
| SM490A | t≤50mm | ≤0.20 | ≤0.55 | ≤1.65 | ≤0.035 | ≤0.035 |
| 50 | ≤0.22 | |||||
| SM490B | t≤50mm | ≤0.18 | ≤0.55 | ≤1.65 | ≤0.035 | ≤0.035 |
| 50 | ≤0.20 | |||||
| SM490C | t≤100mm | ≤0.18 | ≤0.55 | ≤1.65 | ≤0.035 | ≤0.035 |
SM490 Series high strength low alloy steel mechanical property
| Grade | Yield point or yield strength,N/m㎡ | Tensile strength | ||||||
| Thickness mm | Thickness mm | |||||||
| ≤16 | 16 | 40 | 75 | 100 | 100 | ≤100 | 100 | |
| SM490A | ≥325 | ≥315 | ≥295 | ≥295 | ≥285 | ≥275 | 490-610 | 490-610 |
| SM490B | ≥325 | ≥315 | ≥295 | ≥295 | ≥285 | ≥275 | 490-610 | 490-610 |
| SM490C | ≥325 | ≥315 | ≥295 | ≥295 | - | - | 490-610 | 490-610 |
SM490 Series high strength low alloy hSLA steel product details
SM490A is a Japanese industrial standard grade, belonging to the welded structural steel, suitable for construction, bridges, ships, vehicles, construction machinery and other structural components requiring excellent welding performance.
SM490B is a structural steel produced according to the Japanese standard JIS G3106, with a strength of σb of 490MPa. It is mainly used for buildings, bridges, ships, rail vehicles, petroleum storage tanks, containers and other structures that require advanced weldability.
SM490C belongs to the low alloy high strength structural steel plate, SM490C steel plate implementation standard for JISG3106 special technical conditions. SM490C steel plate itself with high strength, high toughness, fatigue resistance, impact resistance, abrasion resistance, corrosion resistance, seismic and welding easy to process and some of the steel plate comprehensive quality performance.
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