EN10025 S690Q S690QL S690QL1 High Strength Hot Rolled Steel Plate

EN10025 S690Q S690QL S690QL1 High Strength Hot Rolled Steel Plate

EN10025 S690Q, S690QL, and S690QL1 high strength hot rolled steel plates are designed to meet the needs of industries requiring materials with superior strength and durability. These steel plates are processed through quenching and tempering (Q+T) to enhance their mechanical performance and ensure reliability under heavy loads.

These high strength steel plates are ideal for a wide range of applications, including construction, mining machinery, shipbuilding, and automotive manufacturing. They are particularly valued for their ability to resist deformation under stress and perform well in challenging environments.

The hot rolled steel plates are available in customizable dimensions, with thicknesses ranging from 10mm to 750mm. Meeting EN10025 standards, these plates are suitable for various industrial projects and ensure consistent quality. Their versatility and ease of processing make them reliable choices for engineers and manufacturers.

These steel sheets offer excellent weldability and formability, enabling efficient fabrication and assembly. Whether you need materials for bridge construction, heavy equipment, or structural components, EN10025 S690Q, S690QL, and S690QL1 plates deliver optimal strength and performance for demanding applications.

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Product Features & Highlights

• Ultra-High Strength-to-Weight Ratio: With a minimum yield strength of 690MPa (and tensile strength of 770-940MPa), our steel plate allows engineers to design lighter, more efficient equipment and structures without sacrificing load capacity. For example, replacing conventional steel with S690 series in crane booms or excavator arms reduces overall weight by 15-20%, cutting fuel consumption, lowering transportation costs, and extending the service life of moving parts. This is a game-changer for B2B clients looking to optimize operational efficiency and meet sustainability goals without compromising performance.

• Superior Z-Direction Ductility (Z25/Z35): A standout feature for thick-section weldments, our optional Z25/Z35 grades prevent lamellar tearing—a common failure mode in high-strength steel when subjected to transverse stress. This is critical for large structures like offshore jackets, bridge girders, and pressure vessels, where welding across thick plates can create internal stresses. By choosing S690 with Z-direction performance, clients eliminate the risk of costly rework, structural failures, and project delays, ensuring compliance with strict industry safety standards.

• Exceptional Low-Temperature Toughness: Unlike many high-strength steels that become brittle in cold conditions, S690QL (impact tested at -40℃) and S690QL1 (impact tested at -60℃) deliver minimum impact energy of 40J, maintaining ductility even in Arctic or sub-zero environments. This makes the series ideal for offshore projects in cold seas, mining equipment operating in northern regions, and infrastructure in temperate zones prone to freezing temperatures. Clients no longer need to compromise on strength for cold-weather reliability—our steel performs consistently, regardless of the climate.

• Outstanding Weldability & Fabricability: The controlled chemical composition and QT heat treatment process ensure that S690 series steel plates can be welded using standard methods (MIG, TIG, submerged arc welding) with minimal pre-heating (only 80-120℃ for thick plates). This reduces labor costs, shortens production cycles, and eliminates the need for specialized welding equipment. Additionally, the steel’s uniform grain structure allows for easy cutting, bending, and forming—even for complex shapes—without cracking or loss of strength, giving fabricators the flexibility to bring ambitious designs to life.

• Uncompromising Quality Consistency: Every batch of S690 steel undergoes a rigorous multi-stage testing process to ensure uniformity and performance. From raw material inspection (optical emission spectrometry for chemical composition) to mechanical testing (tensile, impact, bending) and non-destructive testing (ultrasonic flaw detection for internal defects), we leave no room for error. This consistency is critical for B2B clients managing large-scale projects, where even minor variations in material performance can lead to catastrophic consequences. With our steel, you can trust that every plate will meet the same high standards.

Product Specifications

EN10025 S690Q high strength steel plate, S690QL high strength steel plate, and S690QL1 high strength hot rolled steel plate are essential for industries requiring high-performance materials. These steel sheets are suitable for heavy machinery, energy projects, and structural engineering. As a trusted supplier, we ensure timely delivery and quality assurance for all industrial needs.

The EN 10025 standard deals with technical delivery conditions for thermomechanically rolled weldable fine grain structural steels, among others.

S690Q S690QL S690QL1 Chemical Composition and Technical Property is as below:

Applications of S690Q S690QL S690QL1 High Strength Hot Rolled Steel Plate

1. Construction Industry
   S690Q high strength steel plate, S690QL high strength steel plate, and S690QL1 high strength hot rolled steel plate are widely used in structural parts of high-rise buildings, exhibition centers, and other significant constructions. These steel plates enhance the load-bearing capacity and ensure building safety.

   
   

2. Mining Machinery
   These hot rolled steel sheets are applied in manufacturing structural components for mining operations, such as supports, conveyor belts, and scrapers. They are designed to withstand the harsh mining environment and handle heavy loads effectively.

   
   

3. Shipbuilding
   S690QL high strength hot rolled steel plate and related grades are used to build ship decks, hulls, and other critical components. These steel plates improve the strength, durability, and overall performance of ships under demanding conditions.

   
   

4. Wind Energy Industry
   S690QL steel sheet is extensively used in wind power generation equipment, including towers, bases, and other essential parts. These high strength steel plates are designed to endure the combined effects of wind pressure and gravity, ensuring the stability of wind turbines.

These applications highlight the versatility of S690Q, S690QL, and S690QL1 hot rolled steel plates. Their superior strength and durability make them indispensable for industries such as construction, mining, shipbuilding, and renewable energy projects.

FAQ

1. What is the minimum order quantity (MOQ) for S690 series steel plates?

2. What is Z-direction performance (Z25/Z35), and do I need it?

3. Can you provide third-party certification (EN10204 3.2) for my project?

4. What is the lead time for custom Z35-grade S690QL1 plates?

5. Do you provide welding guidelines for S690 series steel?