S690QL material is a grade of high-strength low-alloy structural steel produced compliance with European standard EN 10025-6.S690QL steel plate is quenched and tempered to provide exceptional strength in different structural steel applications.
S690QL is a special low-alloy high-strength structural steel used in buildings, bridges, ships, vehicles, pressure vessels and other structures. The carbon content (melting analysis) is generally not more than 0.20%, and the total alloying element content is generally not greater than 2.5%. The minimum yield strength is 690MPa, and it has good impact toughness and welding properties.
S690QL Material Specification
S = Structural Steel
690 = minimum yield strength (MPa)
Q = Quenching & Tempering
L = Low notch toughness testing temperature
S690QL Steel Feature
- High strength: S690QL material has high yield and tensile strength, which is higher than ordinary carbon steel, can withstand greater loads in engineering structures.
- Excellent toughness:In addition, S690QL steel also has good toughness and ductility, even under low temperature or high stress conditions,it can maintain its toughness.
- Good welding properties: S690QL material has good welding performance, can be processed by conventional welding methods, and the welded connection has high strength.
S690QL Material Properties
|
C |
SI |
Mn |
P |
S |
N |
B | Cr | Cu | Mo | Nb | Ni | Ti | V | Zr |
| 0.2 | 0.80 | 1.70 | 0.025 | 0.015 | 0.015 | 0.005 | 1.50 | 0.50 | 0.70 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
S690QL Mechanical Properties
| Designation | Mechanical Properties (ambient temperature) | |||||||
| Steel Name | Steel Number | Min. Yield Strength ReH MPa | Tensile Strength Rm MPa | Min. & elongation after fracture | ||||
| Nominal thickness (mm) | Nominal thickness (mm) | |||||||
| >3 <50 | >50 <100 | >100 <150 | >3 <50 | >50 <100 | >100 <150 | |||
| S690QL | 1.8931 | 690 | 650 | 630 | 770/940 | 760/930 | 710/900 | 14 |
S690QL Steel Properties
| V notch impact testing | |||||
|
Grade |
Sample Orientation |
at 0°C |
at -20°C |
at -40°C |
at -60°C |
| S690QL | Longitudinal | 50J | 40J | 30J | |
| S690QL | Transverse | 35J | 30J | 27J | |
