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Product Overview
EN 10025-6 S690QL is a high-strength structural steel plate with a minimum yield strength of 690 MPa, designed for heavy-load-bearing applications requiring strength, toughness, and weight efficiency. Supplied in a quenched and tempered condition, S690QL provides excellent impact resistance, formability, and weldability, even at low temperatures.
These plates are used in engineering structures, lifting equipment, bridges, cranes, mining and earthmoving machinery, and offshore platforms, where performance under stress is critical.
Key FeaturesMinimum yield strength: 690 MPa
Excellent strength-to-weight ratio
Good formability and weldability
Guaranteed toughness at -40°C
Ideal for high-load, low-weight structural components
| Grade | S690QL (Q+T) |
| Thickness | 6 mm – 150 mm |
| Width | 1000 mm – 3000 mm |
| Length | 3000 mm – 12000 mm |
| Condition | Quenched and Tempered |
| Surface Finish | Mill Finish / Shot Blasted / Painted |
| MOQ | 10 Metric Tons |
| Delivery Time | 7 – 15 Working Days |
| Yield Strength | ≥ 690 MPa |
| Tensile Strength | 770 – 940 MPa |
| Elongation (L0 = 5d) | ≥ 14% |
| Impact Energy | ≥ 27 J at -40°C (Charpy V-notch) |
| 0.20 | 1.70 | 0.80 | 0.020 | 0.010 | 0.50 | 0.70 | 2.00 | 0.005 |
(Actual values vary with plate thickness and origin)
Testing & Quality ControlUltrasonic Testing (UT) – EN 10160
Charpy Impact Test – -40°C guaranteed
Mechanical & Chemical Testing
Hardness Testing
Third-Party Inspection – TUV, DNV, Lloyds, SGS, etc. (on request)
Heavy equipment frames and booms
Mobile cranes and lifting systems
Bridges and high-rise structures
Offshore platforms and modules
Trailer manufacturing and pressure parts (upon qualification)
Mill Test Certificate – EN 10204 3.1 / 3.2
Ultrasonic & Impact Test Reports
Mechanical and Chemical Analysis
Full Traceability and QA/QC documentation
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