S550QL high strength plate
S550QL high strength steel plate belongs to the European standard low alloy high strength structural steel plate. The implementation standard of S550QL high tensile steel is: EN10025 special technical conditions.
S550QL low alloy steel material is not easy to become brittle in low temperature environment, has good ductility and toughness, can effectively absorb the impact energy generated by natural disasters such as earthquakes, and improve the seismic performance of the structure.
In addition, S550QL high strength low alloy steel plate is also easy to process and shape, has excellent weldability, and the quality of the welded joint is stable and reliable, which can meet the requirements of various welding processes.
High Strength Low Alloy Steel Plate Chemical Composition
| C | Si | Mn | P | S | N | B | Cr |
| 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.015 | 0.005 | 1.50 |
| Cu | Mo | Nb | Ni | Ti | V | Zr | |
| 0.50 | 0.70 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 | |
HSLA Low Alloy High Strength Steel Plate mechanical property
| Thickness (mm) | |||
| S550QL | ≥ 3 ≤ 50 | > 50 ≤ 100 | > 100 |
| Yield strength (≥Mpa) | 550 | 530 | 490 |
| Tensile strength (Mpa) | 640-820 | 640-820 | 590-770 |
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