SN490B High Strength Low Alloy Steel Plates (HSLA)
SN490B hsla structural steel belongs to the Japanese standard low-alloy high-strength construction steel plate. SN490B not only has very high strength, but also has certain toughness, wear resistance, fatigue resistance, earthquake resistance and impact resistance, easy welding processability, cold formability, and durability. Wear and acid resistance, etc.
SN490B low alloy steel plates are generally used in landmark buildings, office building construction, nuclear power plant construction, steel structure engineering, factory construction, scenic spot construction, etc. They are widely used in the construction industry.
SN490B High Strength Steel Sheet Chemical Composition :
| C | Si | Mn | P | S |
| ≤0.2 | ≤0.55 | ≤1.65 | ≤0.03 | ≤0.015 |
SN490B High Tensile Steel Plate Mechanical Property:
|
Grade |
Tensile test (transverse) |
V notch impact test |
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|
Upper yield strength MPa |
Tensile strength MPa |
Elongation% |
180°Bend test b≥35mm Inner diameter |
Temperature °C |
Energy |
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|
L=50 |
L=200 |
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|
Nominal thickness mm |
Nominal thickness mm |
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|
≤16 |
＞16 |
|
≤5 |
＞5~16 |
＞16 |
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|
SN490B |
≥235 |
≥235 |
400~510 |
≥17 |
≥17 |
≥21 |
2a |
20 |
- |
|
low alloy structural steel
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