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Home > Our Products > Quenched and Tempered Steel Plates > Grade / Specification > S690QL Plates
S690QL is a high-yield, quenched and tempered structural steel plate that complies with EN 10025-6. With a minimum yield strength of 690 MPa, this grade is widely used in demanding applications where strength, weight reduction, and performance under stress are critical.
S690QL plates are ideal for manufacturers, structural engineers, and EPC contractors working on mobile cranes, bridges, offshore structures, and mining equipment. This grade offers excellent weldability, consistent flatness, and impact toughness down to –40°C, making it a versatile choice for both static and dynamic load-bearing applications.
Hindustan Steel Corporation supplies S690QL plates in India and abroad with complete certification, fast delivery, and custom size options.
S690QL steel plates are trusted by engineers and OEMs across sectors for:
Its high strength-to-weight ratio allows for material savings, leaner designs, and better fuel efficiency.
Compliant with EN 10025-6, S690QL delivers robust mechanical results:
| Property | Typical Value |
|---|---|
| Yield Strength (Min) | 690 MPa |
| Tensile Strength | 770–940 MPa |
| Elongation | ≥14% |
| Impact Toughness | ≥40J at –40°C |
| Hardness (Brinell) | ~220–250 HB |
This combination makes it suitable for cyclic stress, vibration, and fatigue-prone environments, while still maintaining machinability and weldability.
S690QL is alloyed carefully to balance strength, weldability, and toughness:
| Element | Max % |
|---|---|
| Carbon (C) | 0.20 |
| Manganese (Mn) | 1.70 |
| Silicon (Si) | 0.80 |
| Chromium (Cr) | 1.50 |
| Nickel (Ni) | 2.00 |
| Molybdenum (Mo) | 0.70 |
| Phosphorus (P) | 0.020 |
| Sulphur (S) | 0.010 |
| CE (Carbon Equivalent) | ~0.45–0.48 |
This controlled composition ensures excellent weldability even at high strength levels and minimizes risk of cold cracking during fabrication.
S690QL is produced in accordance with EN 10025-6, a European standard for structural steels with improved toughness.
Recognized International Equivalents:
| Standard | Equivalent Grade |
|---|---|
| EN 10025-6 | S690QL |
| Dillinger (Germany) | Dillimax 690T |
| SSAB (Sweden) | Weldox 700 |
| JFE (Japan) | JFE HITEN 780LE |
| ASTM | A514 Grade Q / ASTM A517 (approx.) |
| DIN (Obsolete) | STE 690 (historical reference) |
Note: Always validate design-specific compatibility when substituting.
Hindustan Steel Corporation supplies cut-to-size and full sheet S690QL plates for fabrication-ready use.
Size Range:
We also provide profiling, bending, and drilling as per your CAD drawings.
S690QL undergoes quenching and tempering, giving it:
It’s designed to deliver >40J impact energy at -40°C, making it suitable for cold climates and critical load conditions.
S690QL balances strength and workability:
Cutting:
Welding:
Forming:
We support fabricators with welding procedures (WPS, PQR), inspection documents, and forming guidelines.
With decades of experience in structural steel supply, we bring:
“We’re not just a supplier — we’re your steel solution partner.”
Looking for alternate or equivalent materials? We also supply:
Internal links to these grades recommended for project planners and EPC clients.
Hindustan Steel Corporation is a trusted S690QL plate exporter from India, supplying clients across heavy engineering, marine, and energy sectors.
Export Focus Regions:
Packaging Highlights:
We provide complete documentation: COO, MTC, packing list, invoice, inspection reports, and shipping papers.
S690QL plates are perfect when your project needs a balance of strength and workability.
Selection Tips:
Need help matching steel grade to your engineering load case? Contact our experts — we’ll guide you.
All our S690QL plates come with factory and third-party approvals.
Supplied With:
We also provide IBR approval for projects needing compliance with Indian Boiler Regulations.
Yes, both are equivalent in mechanical properties. Dillimax 690T is a German-manufactured version of S690QL.
It is produced as per EN 10025-6, the European standard for quenched and tempered structural steels.
CE is typically between 0.45 to 0.48, depending on thickness and composition.
Yes, with proper preheat (above 20 mm thickness) and low-hydrogen electrodes, S690QL can be welded safely.
Yes. Hindustan Steel Corporation stocks S690QL plates at our Mumbai and Taloja warehouses.
Prices vary by size, thickness, and quantity. Contact us for the current ₹/kg or export quote.
Absolutely. We offer waterjet, plasma, and laser cutting as per your drawings.
Yes, we export to 40+ countries with full packing, shipping, and inspection support.
Yes, we support TPI from SGS, BV, Lloyds, and more.
Yes, S690QL has nearly double the yield strength of S355, making it ideal for high-performance structures.
Minimum 40 Joules, ensuring excellent toughness in cold environments.
Both are high-yield plates, but S690QL is EN-standardized with better cold impact resistance.
S690QL or Weldox 700 are top choices due to their lightweight and strength combo.
From Hindustan Steel Corporation — with full traceability, mill test certificates, and export packing.
Looking for S690QL plates in stock or a competitive quote?
Contact Hindustan Steel Corporation today to get:
+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com
390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India
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+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com