Performance of S690QL1 high-strength steel plate
S690QL1 high strength steel plate is a high performance quenched and tempered high strength steel plate, which complies with European standard EN 10025-6 standard 12. The chemical composition of S690QL1 low alloy steel sheet mainly includes carbon, silicon, manganese, phosphorus, sulfur and other elements, and a small amount of alloying elements such as chromium, molybdenum, nickel, copper, etc. are added to improve the performance.
Performance characteristics of S690QL1 low alloy structural steel
Good processing performance : It has good plasticity and toughness, and is easy to perform processing operations such as cutting, bending, and drilling.
Excellent corrosion resistance : The added alloying elements improve the corrosion resistance of the steel plate and are suitable for harsh working environments.
Stable performance : After strict heat treatment process (quenching + tempering), the performance is stable and reliable.
Application areas of S690QL1 low alloy steel plate
Engineering machinery : Manufacturing key components such as lifting machinery, excavators, bulldozers, and road rollers.
Mining machinery: manufacturing key components such as mining excavators, loaders, crushers, etc.
Construction machinery: manufacturing key components such as concrete pump trucks, mixer trucks, tower cranes, etc.
Bridge construction: used to manufacture key components of steel bridges, cable-stayed bridges, suspension bridges, etc.
Pressure vessels: manufacturing pressure vessels and pipelines for industries such as oil, natural gas, and chemicals.
Chemical composition % of steel S690QL1 high tensile steel
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Cu | Zr | B | CEV |
| max 0.2 | max 0.8 | max 1.7 | max 2 | max 0.02 | max 0.01 | max 1.5 | max 0.7 | max 0.12 | max 0.015 | max 0.06 | max 0.05 | max 0.5 | max 0.15 | max 0.005 | max 0.83 |
Mechanical properties of steel S690QL1 high strength alloy steel
| Nominal thickness (mm): | 3 - 50 | 50 - 100 | 100 - 150 |
| Rm - Tensile strength (MPa) | 770-940 | 760-930 | 710-900 |
| Nominal thickness (mm): | 3 - 50 | 50 - 100 | 100 - 150 |
| ReH - Minimum yield strength (MPa) | 690 | 650 | 630 |
| KV - Impact energy (J) longitud., | 0° 60 |
-20° 50 |
-40° 40 |
-60° 30 |
| A - Min. elongation Lo = 5,65 √ So (%) | 14 |
