The application of EN 10025-6 S690Q strength steel sheet

S690Q is a hot-rolled hardened structural steel that has undergone subsequent tempering treatment and conforms to the EN 10025-6, DSTU EN 10025-6 standard.

Standard: Hot-rolled product made from structural steel. EN 10025-6: Technical delivery conditions for high-tensile structural steel post-tempering and quenching.

Classification: High-grade structural steel.

Product:Fine-grain steel post-quenching and tempering.

Due to its high strength, high toughness and excellent welding performance, S690Q steel plates are widely used in the following fields:

Heavy Machinery: Used to manufacture parts and structural components for lifting machinery and mining machinery (such as excavators and loaders).

Bridge Engineering: Applied in the production of key load-bearing components of bridges, including main girders and bridge piers, to improve load-bearing capacity and seismic performance.

Building Structures: Used to make key load-bearing members (such as columns and beams) in high-rise buildings and large stadiums, enhancing overall stability.

Marine Engineering: Utilized in offshore platforms, subsea pipelines and other marine facilities, leveraging its high strength and corrosion resistance.

Shipbuilding: Employed in the manufacturing of hull structures and decks to enhance the load-bearing capacity and durability of ships.

Petrochemical Industry: Used to produce oil storage tanks, oil refining equipment and other facilities, meeting the requirements of high temperature resistance and corrosion resistance.

Ultra-High Yield Strength: These steel grades exhibit extremely high minimum yield strengths, with S690Q starting at 690 MPa, S690QL at 770 MPa, and S690QL1 at 890 MPa. This makes them ideal for load-bearing structures, such as bridges, cranes, and offshore platforms.

Low-Temperature Toughness: S690QL1 steel, in particular, is designed to maintain its high strength even at low temperatures, making it suitable for applications in Arctic or cold environments.

Fine-Grained Structure: These grades often have a fine-grained microstructure, which enhances their mechanical properties, including impact toughness and fatigue resistance.

Weldability: Despite their high strength, S690Q/QL/QL1 steel grades are known for their good weldability. However, special precautions and welding procedures may be required to ensure high-quality welded joints.

Versatility: These steel grades are versatile and find applications in a variety of industries, including construction, mining, and heavy machinery manufacturing. They are used for critical structural components, such as crane booms, pressure vessels, and support structures.

Compliance with Standards: S690Q/QL/QL1 steel complies with European standards (EN 10025-6), ensuring consistent quality and performance in demanding structural applications.

Quality Assurance: Manufacturers of these steel grades follow stringent quality control procedures to ensure the material's reliability and safety, especially in critical load-bearing applications.

Request A Quote

If you want to learn about or purchase other ship plates from GNEE, you can send an email to alloy@gneesteelgroup.com. We will be very happy to serve you.

FAQ

What is the difference between S690Q and S690QL?

S690Q: Minimum impact toughness tested at -20°C (30J average). → Typical Use: Cranes in temperate climates, quarry equipment. S690QL: Certified for -40°C and below (≥40J impact toughness). → Critical Use: Arctic pipelines, offshore platforms, mining vehicles in Siberia.

What grade is S690QL material?

S690QL is a high strength quenched and tempered steel grade that complies to steel specification EN 10025. The designation S690QL refers to a minimum yield strength of 690 MPa.

What is S690 grade steel?

S690 high yield & fine grain steel plate is a high strength, quenched and tempered fine-grain structural steel. Structural steel S690 is used in structures that must withstand very heavy loads. This grade is meant for structures where weight savings is important.

What is the equivalent of S690 steel?

Approximate equivalents
ASTM A514, EN 10149-2 Grade S700MC, AS/NZS 3579 Grade 700, AM 700, Bisalloy 80.

What is the price of S690QL material?

S690QL High Strength Steel Plates, Thickness: 5mm to 150mm at 5,600-13,500 CNY per tonne (approx. 5.6-13.5 CNY per kilogram)/440-900 USD per tonne (approx. 0.44-0.90 USD per kilogram)

What is the hardness of S690 QL steel?

S690QL steel stockholders and suppliers. S690QL is a quenched and tempered high strength steel supplied in full plates or cut pieces with delivery to the whole of the UK. With its high yield of minimum 690MPa it offers better strength than standard carbon steel grades.

What is the effective use of high strength S690 steel in construction?

The high strength S690 steels have an excellent strength-to-self-weight ratio, and they are highly efficient to be used in heavily loaded structures. Typical applications include piles and columns in buildings and supporting members in bridges.

What is the difference between S890QL and S690QL?

S690QL, S890QL, and S960QL are all water quenched and tempered steels that comply with the EN10025:6:2004 specification. These ultra high strength steels have a minimum yield strength of 690 MPa, 890 MPa, and 960 Mpa respectively, making them ideal for use in the haulage sector.

What is the difference between S700MC and S690ql?

The S700MC Steel is basically a structural steel plate developed especially for applications requiring high yield strength. They are used for several load bearing applications. The S690ql is a low alloy structural steel which is high in strength and comes with good weldability.

What is the yield strength of s690 steel?

690 MPa.

Yield strength of 690 MPa. Used in structures bearing extremely heavy loads, such as bridges, offshore drilling rigs and buildings, as well as in heavy construction equipment and cranes.