BS 960 D/E

BS960 High-Strength Low-Alloy Structural Steel Plate

BS960 steel plate is a high-strength low-alloy structural steel that serves as a critical material in the engineering machinery sector. It exhibits excellent mechanical properties and weldability, making it widely applicable in fields such as engineering machinery, mining equipment, bridge construction, and heavy-duty vehicles.

BS 960 D/E is a high-performance structural steel, designed to deliver a minimum yield strength of 960 MPa, varying with the steel's thickness. This material fully meets the stringent criteria for S960QL as outlined in EN 10025-6.

Its execution standard may reference GB/T 16270-2009 or specific technical agreements. The delivery condition is typically quenching and tempering. Depending on requirements, it may be classified into different grades, such as BS960D and BS960E, with corresponding international designations like Q960E, S960QL, and STRENX 960. The product can also undergo Z15, Z25, and Z35 through-thickness performance tests as per contract specifications.

This steel is particularly well-suited for applications that demand robust load-bearing capabilities, such as in critical structural components.

The benefits of BS 960 D/E are notable:

• It offers exceptional consistency across each plate, ensured by stringent tolerances.
• It boasts high impact toughness, which translates to a strong resistance against fractures.
• It features superior bendability and maintains excellent surface quality.
• It is highly weldable, with the heat-affected zone (HAZ) maintaining excellent strength and toughness.

Equivalent Grade of BS 960 D/E

Mechanical Properties of BS 960 D/E

Chemical Composition of BS 960 D/E

Production Process and Technical Challenges

The production of BS960 relies on advanced metallurgical equipment and precise process control:

• Smelting and Continuous Casting: Basic oxygen or electric arc furnace smelting is employed, followed by LF refining and VD vacuum degassing to ensure high purity of the molten steel. Electromagnetic stirring during continuous casting reduces segregation.
• Thermomechanical Controlled Processing: Multi-pass rolling is conducted in the austenite non-recrystallization region, accompanied by laminar cooling to form a fine bainite/martensite multiphase structure. This process requires precise control of the final rolling temperature and cooling rate.
• Heat Treatment: Offline quenching and tempering processes are adopted to further enhance uniformity and toughness, ensuring the steel is delivered in a tempered condition.

Why Choose BS960E for High-end Equipment?

High Strength & Light Weight, Higher Effective Load

BS960E achieves an optimal balance between strength and weight. While maintaining the original bearing capacity, it can reduce the structural weight by 25%–35%. It lowers overall equipment weight and energy consumption, and significantly increases effective load capacity, fully conforming to the lightweight and high-efficiency development trend of the industry.

Excellent Process Adaptability, Simplified Manufacturing

Supported by Baosteel's strict narrow tolerance and high flatness quality control, BS960E steel plates deliver high incoming precision, eliminating extensive post-leveling and correction procedures. Meanwhile, its low welding preheating requirement and stable forming performance shorten processing cycles, reduce scrap rates, and comprehensively improve manufacturing efficiency.

Ultra-low Temperature Resistance, Global Working Condition Adaptability

Most commercial high-strength steels suffer from sharp toughness decline and brittle fracture risks in low-temperature environments. In contrast, BS960E guarantees stable impact toughness at -40℃, enabling reliable outdoor operation in global ultra-cold regions and eliminating potential structural safety hazards in low-temperature working conditions.

Full-process Technical Support & Worry-free After-sales Service

Backed by Baosteel's original core technology and professional technical & sales teams, we provide full-chain services including material selection guidance, processing technical support and on-site solution assistance, responding quickly to customer needs and supporting project implementation throughout the whole process.

Professional Processing Guidelines for Mass Production

BS960E features excellent comprehensive processing performance and strong stability for mainstream industrial production processes:

Thermal Cutting: Compatible with oxy-fuel, plasma and laser cutting. For thick plates, preheating and post-heat treatment shall be conducted in accordance with official manuals to prevent cracks.

Bending Processing: Officially warranted bending performance by Baosteel. It is recommended to arrange the bending line perpendicular to the rolling direction for better forming effect and higher stability.

Machining: Applicable for HSS cutters and carbide cutters with stable cutting performance and high processing efficiency.

​Applications​

BS960 steel plate, with its high strength and good toughness, plays a key role in various heavy industries:

Engineering Machinery Manufacturing: BS960 steel plate is particularly prominent in this field. Modern engineering machinery requires materials with extremely high strength for working devices and critical load-bearing components. The high strength of BS960 enables significant reduction in steel usage under equivalent load conditions, facilitating lightweight design of equipment.

Mining Equipment: The harsh mining environment subjects equipment to high-intensity impact and wear. BS960 steel plate not only offers high strength but also exhibits excellent impact resistance and wear resistance, making it ideal for manufacturing key components such as dump truck bodies and crusher liners.

Special Vehicle Manufacturing: BS960 steel plate is widely used in military armored vehicles and firefighting ladder trucks, where strict requirements for body material strength and weight exist. BS960 ensures lightweighting while meeting protection or operational performance requirements.

Shipbuilding and Offshore Engineering: The demand for BS960 steel plate in shipbuilding and offshore engineering is growing. Load-bearing structures of large vessels require high-strength steel to reduce weight and increase load-bearing capacity. The good low-temperature toughness of BS960 makes it particularly suitable for polar vessels and offshore structures.

Energy Equipment Manufacturing: BS960 steel plate is used in wind turbine towers and large pressure vessels. As the single-unit capacity of wind turbines continues to increase, the height and diameter of towers also grow, demanding higher material strength.

Other Potential Applications: BS960 series steel can also be applied in deep-sea engineering and aerospace for extreme working conditions that require extremely high strength, fatigue resistance, and corrosion resistance.

BS960 steel plate has become an indispensable key material in modern industrial manufacturing. From engineering machinery to mining equipment, and from special vehicles to energy equipment, the applications of BS960 continue to expand. With ongoing advancements in materials science and manufacturing processes, BS960 steel plate is poised to demonstrate its unique value in even broader fields.

Fabrication and Delivery Conditions

For these aspects, they depend on your specific requirements. Please contact us and we will provide you with professional advice and services.

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