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S690QL1 steel plate belongs to quenched and tempered high yield strength structural steel, S stands for structural steel, 690 stands for yield value, unit MPa, Q stands for delivery condition, L1 stands for the specified minimum value of impact energy when the temperature is not lower than -60℃, S690QL1 is a special alloy steel according to European designation.
S690QL1 steel plate delivery status: quenched and tempered.
Smelting analysis of chemical composition of S690QL1 steel plate:
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Nb | V | Ti | N | Zr | B |
| ≤0.2 | ≤0.8 | ≤1.7 | ≤0.02 | ≤0.010 | ≤2 | ≤1.5 | ≤0.7 | ≤0.5 | ≤0.06 | ≤0.12 | ≤0.05 | ≤0.015 | ≤0.15 | ≤0.005 |
Mechanical properties of S690QL1 steel plate:
| Thickness | Mechanical properties | |
| 3-50mm | ReH(MPa) | ≥690 |
| Rm(MPa) | 770-940 | |
| A(%) | ≥14 | |
| Impact temperature | -60 | |
| Longitudinal Akv (J) | ≥30 | |
| >50-100mm | ReH(MPa) | ≥650 |
| Rm(MPa) | 760-930 | |
| A(%) | ≥14 | |
| Impact temperature | -60 | |
| Longitudinal Akv (J) | ≥30 | |
| >100-150mm | ReH(MPa) | ≥630 |
| Rm(MPa) | 710-900 | |
| A(%) | ≥14 | |
| Impact temperature | -60 | |
| Longitudinal Akv (J) | ≥30 | |
