Structural High Strength Steel Plate S690QL: Properties, Specification, Price & Uses
If you are looking for a Structural High Strength Steel Plate S690QL that is strong, light and easy to weld, you are in the right place. S690QL is a quenched and tempered steel used in cranes, bridges, mining machines, heavy trucks and offshore structures. In this guide you will learn what S690QL is, its chemical and mechanical properties, equivalent grades, price in India and where it is used.
Conquest Steel & Alloys is a Mumbai-based supplier of S690QL steel plates, with ready stock and a Mill Test Certificate on every supply.
What is Structural High Strength Steel Plate S690QL?
S690QL is a high-strength structural steel plate made to the EN 10025-6 standard (material number 1.8928). It is supplied in the Quenched and Tempered (Q&T) condition. This heat treatment gives the plate high strength and good toughness together.
What Does S690QL Mean?
| Letter / Number | Meaning |
|---|---|
| S | Structural steel |
| 690 | Minimum yield strength of 690 MPa |
| Q | Quenched and tempered delivery condition |
| L | Impact toughness tested at low temperature (down to -40°C) |
Because of its high yield strength, a designer can use a thinner S690QL plate where a normal grade like S355 would need a thicker section. This reduces the weight of the structure and the cost of welding and handling.
Structural High Strength Steel Plate S690QL Specification
| Parameter | Details |
|---|---|
| Product | Structural High Strength Steel Plate S690QL |
| Grade | EN 10025-6 S690QL |
| Standard | EN 10025-6 |
| Yield Strength | Min. 690 MPa |
| Tensile Strength | 770 – 940 MPa |
| Thickness | 6 mm to 150 mm |
| Width | Up to 3000 mm |
| Length | Up to 12000 mm |
| Impact Test | -40°C |
| Delivery Condition | Quenched and Tempered (Q&T) |
| Availability | Ready stock with Mill Test Certificate |
S690QL Steel Plate Price per Kg in India
| Currency | Minimum | Maximum |
|---|---|---|
| INR | ₹110 per kg | ₹200 per kg |
| USD | $1.25 per kg | $2.28 per kg |
Prices are indicative. The final rate depends on thickness, quantity, origin of the mill and market conditions. Contact us for a latest quotation.
S690QL Chemical Composition
The table below shows the maximum limits (%) for the main elements.
| Element | C | Si | Mn | P | S | B | Cr | Cu | Mo |
|---|---|---|---|---|---|---|---|---|---|
| Max % | 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 1.50 | 0.50 | 0.70 |
| Element | N | Nb | Ni | Ti | V | Zr |
|---|---|---|---|---|---|---|
| Max % | 0.015 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
S690QL Mechanical Properties
| Plate Thickness (mm) | Yield Strength ReH (MPa) | Tensile Strength Rm (MPa) | Elongation A5 (% min) | Impact Energy (J min) |
|---|---|---|---|---|
| 3 to 50 | 690 | 770 – 940 | 14 | 30 J at -40°C |
| Over 50 to 100 | 650 | 760 – 930 | 14 | 30 J at -40°C |
| Over 100 to 150 | 630 | 710 – 900 | 14 | 30 J at -40°C |
V-Notch Impact Test Values
| Orientation | 0°C | -20°C | -40°C |
|---|---|---|---|
| Longitudinal | 50 J | 40 J | 30 J |
| Transverse | 35 J | 30 J | 27 J |
Equivalent Grades of S690QL Steel Plate
| Standard / Brand | Equivalent Grade | Country |
|---|---|---|
| EN 10025-6 | S690QL (1.8928) | Europe |
| ASTM | A709-100 | USA |
| DIN / W.Nr | TStE690V, DILLIMAX 690 | Germany |
| NAXTRA | NAXTRA 70 | Brand grade |
| SS | WELDOX 700 | Sweden |
| ISO 4952 | E690 | International |
| JIS | JFE HITEN 780LE | Japan |
| Other | ALFORM 700 | Austria |
Equivalent grades are close matches, not always identical. Please confirm the exact chemistry and testing requirements before ordering.
Key Features and Benefits of S690QL Plates
1. Very High Strength with Less Weight
With a minimum yield strength of 690 MPa, you can design lighter structures. Lighter equipment means better payload and lower fuel use in transport applications.
2. Good Weldability and Formability
S690QL can be welded by common welding methods and can be cut and bent when the correct procedure is followed. Preheat and heat input should be controlled as per the welding procedure.
3. Toughness at Low Temperature
The “L” in the grade guarantees impact values at -40°C, so the plate is suitable for cold climates and offshore conditions.
4. Long Service Life
The quenched and tempered structure gives a strong, durable plate that works well under heavy loads and repeated stress.
5. Cost Saving
Thinner sections need less steel, less welding and less transport. This often lowers the total project cost even if the price per kg is higher than mild steel.
Applications of Structural High Strength Steel Plate S690QL
| Industry | Typical Use |
|---|---|
| Cranes & Lifting Equipment | Crane booms, jibs, mobile crane frames |
| Bridges & Infrastructure | Bridge girders and structural components |
| Offshore & Marine | Offshore platforms and support structures |
| Heavy Transport | Truck chassis, dumper bodies, tank trucks, trailers |
| Mining & Earthmoving | Excavator parts, loaders, mining equipment |
| Machine Building | Press frames, heavy fabricated machinery |
| Oil & Gas / Power | Structural supports and heavy fabrication |
Why Buy S690QL Plates from Conquest Steel & Alloys?
- Ready stock in sizes from 6 mm to 150 mm thickness
- Mill Test Certificate with every supply
- Wide range of high strength plates in one place
- Competitive pricing for domestic and export orders
- Experienced team with over 30 years of industry expertise
- Quick quotation and support from our Mumbai office
Other High Strength Steel Plates We Supply
| Grade | Product Page |
|---|---|
| S890QL | EN 10025-6 S890QL |
| S960QL | EN 10025-6 S960QL |
| S1100QL | EN 10025-6 S1100QL |
| S700MC | EN 10149 S700MC |
| A514 | SA 514 / ASTM A514 |
You can also see more S690QL stock details on our group website: S690QL High Strength Steel Plates, CSteel India.
Global Supply of S690QL Steel Plates
We supply S690QL plates across India and export to many countries, including the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Singapore, Malaysia, Vietnam, Germany, the UK, the USA, Canada, Australia, South Africa and Nigeria. Our main supply cities in India include Mumbai, Pune, Ahmedabad, Chennai, Hyderabad, Bengaluru, Kolkata and New Delhi.
Frequently Asked Questions (FAQ)
What is S690QL steel plate used for?
It is used for cranes, bridges, offshore structures, mining machines, dumper bodies and other heavy equipment that needs high strength with lower weight.
What is the yield strength of S690QL?
The minimum yield strength is 690 MPa for plates up to 50 mm thick. It reduces slightly for thicker plates (650 MPa for over 50 to 100 mm and 630 MPa for over 100 to 150 mm).
What is the equivalent grade of S690QL?
Common equivalents include DILLIMAX 690, NAXTRA 70, WELDOX 700, ALFORM 700, JFE HITEN 780LE, E690 and ASTM A709-100.
What is the price of S690QL steel plate per kg in India?
The indicative price is ₹110 to ₹200 per kg, depending on thickness, quantity and market conditions.
Is S690QL weldable?
Yes. It can be welded with standard methods if the correct preheating and heat input are followed.
Do you supply S690QL with a test certificate?
Yes. All supplies come with a Mill Test Certificate.
Contact Conquest Steel & Alloys for S690QL Plates
Need a quotation for Structural High Strength Steel Plate S690QL? Share your thickness, size and quantity, and our team will reply with the best offer.
| Details | Information |
|---|---|
| Company | Conquest Steel & Alloys |
| Address | Shreepati Castle – D1, No.10 & 11, 1st Floor, 11th Khethwadi, Mumbai, Maharashtra – 400004, India |
| Mobile / WhatsApp | +91 9820857494 |
| Alternate Mobile | +91 9619554228 |
| amit.jain@csteel.in, csa@csteel.in | |
| Website | www.steelalloys.co.in |
| Working Hours | Monday to Saturday, 10 am to 6 pm |
Call or WhatsApp today for ready stock, latest price and export quotation of S690QL steel plates.
Structural High Strength Steel Plate S690QL Specification:
| India Price : | Min- 110 INR Per Kg / Max- 200 INR Per Kg |
|---|---|
| USD Price : | Min- 1.25 USD Per Kg / Max- 2.28 USD Per Kg |
| Grade : | EN 10025-6 -S690QL |
| Standard : | EN 10025-6 |
| Yield Strength : | Min. 690 MPa |
| Tensile Strength : | 770 – 940 MPa |
| Thickness : | 6mm to 150mm |
| Width : | Up to 3000mm |
| Length : | Up to 12000mm |
| Impact Test : | -40°C |
| Delivery Condition : | Quenched and Tempered (Q&T) |
| Availability : | Ready Stock with Mill Test Certificate |
