S32750/2507 Duplex Steel Stainless Steel Strip From China

Surface Description of Stainless Steel Plate

Zhongzheng International embarked on its illustrious stainless steel journey in 2003. With over two decades of dynamic growth and groundbreaking innovation, it has risen to the pinnacle of the industry, firmly establishing its esteemed reputation in stainless steel materials and advanced processing.

With an illustrious history in international business, Zhongzheng's 2023 export revenue surged past US$100 million. By strategically establishing three export service bases in China, the company has forged robust alliances with engineering firms, steel mills, and global trading entities. This extensive collaborative network continually enhances service capabilities and ambitiously expands Zhongzheng's footprint in overseas markets.

Zhongzheng International redefines stainless steel services with its innovative 'supermarket' model, partnering globally with renowned steel mills. With an impressive inventory of 160,000 tons-comprising 20,000 tons of diverse metals, including ordinary stainless steel plates, duplex steel plates, nickel-based alloy plates, and heat-resistant steel plates-Zhongzheng ensures reliability, unparalleled quality, and strict adherence to specifications and delivery standards.

Equipped with cutting-edge steel processing equipment and professional testing centers, Zhongzheng excels in cutting, grinding, forming, beveling, welding, heat treatment, machining, spraying, and beyond. Serving over 30 diverse industries-including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/biofermentation, petrochemicals, and energy equipment-Zhongzheng's expertise is unrivaled.

Zhongzheng's extensive service experience is reflected in its wide range of offerings. With a client base exceeding 70,000 across 30 industries and 30,000+ active customers, Daxun's industry recognition and service excellence are well-established.

Zhongzheng guarantees prompt and efficient delivery of stainless steel products through an integrated system that merges information flow, logistics, and capital flow. Real-time order data seamlessly links to the logistics system, ensuring swift delivery. Strategically positioned processing centers near highways, rivers, and oceans facilitate efficient scheduling, rapid response, and smooth transportation.

Dedicated to quality and integrity, Zhongzheng introduces 'Performance Excellence Management' and adopts 'PDCA+Lean' management principles, ensuring 'Zhongzheng = assured quality' becomes synonymous with trust. The implementation of a sophisticated ERP system allows full traceability of each steel plate, reinforcing the industry's anti-counterfeiting efforts.

Zhongzheng prioritizes time, material, and stress savings for customers, ultimately reducing costs. By offering cost-optimized material recommendations and streamlined processing services, Zhongzheng enhances material utilization. Continuous lean improvement activities enable Daxun to minimize its own costs and pass on savings to customers. Additionally, a comprehensive product traceability system and prompt resolution of quality concerns provide customers with unparalleled peace of mind.

Duplex 2507 (UNS S32750) is a super duplex stainless steel with a composition of 25% chromium, 4% molybdenum, and 7% nickel. Designed for high-demand applications requiring exceptional strength and corrosion resistance, it is ideal for chemical processes, petrochemical, and seawater equipment. This steel exhibits outstanding resistance to chloride stress corrosion cracking, high thermal conductivity, and a low thermal expansion coefficient. Its rich chromium, molybdenum, and nickel content provides excellent resistance to pitting, crevices, and general corrosion.

• Oil and gas industry equipment

• Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems

• Chemical process industries, heat exchangers, vessels, and piping

• Desalination plants, high pressure RO-plant, and seawater piping

• Mechanical and structural components, high-strength, corrosion-resistant parts

• Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping

ASTM/ASME ...…. A240 - UNS S32750
EURONORM...... 1.4410 - X2 Cr Ni MoN 25.7.4

GENERAL CORROSION

• The high chromium and molybdenum content of 2507 renders it highly resistant to uniform corrosion by organic acids like formic and acetic acid.

• It offers excellent resistance to inorganic acids, particularly those with chlorides.

• It can be effectively used in dilute hydrochloric acid.

• Pitting is not a concern in areas below the borderline in this figure, though crevices should be avoided.

• Its low carbon content significantly reduces the risk of carbide precipitation at grain boundaries during heat treatment.

• The alloy is highly resistant to carbide-related intergranular corrosion.

• The duplex structure of our 2507 Stainless Steel Plate offers unparalleled resistance to chloride stress corrosion cracking (SCC), ensuring durability and reliability in even the harshest marine environments.

• Elevate your marine applications with 2507 Stainless Steel, a material that surpasses 2205 in both corrosion resistance and strength, providing unmatched performance.

• The 2507 Stainless Steel Plate is an ideal choice for offshore oil and gas industries. Its exceptional resistance to high brine levels, whether naturally occurring or injected, enhances recovery and ensures longevity.

• Utilize varied testing methods to accurately determine the pitting resistance of our 2507 stainless steel in chloride-containing solutions, ensuring optimal performance.

• Experience superior protection with our highly resistant 2507 stainless steel, engineered to withstand crevice corrosion effectively.

For hot working, 2507 should be processed between 1875°F and 2250°F. Follow this with a solution anneal at a minimum of 1925°F, completed by a rapid air or water quench to ensure peak performance.

2507 Stainless Steel is designed to be compatible with most standard forming processes for stainless steel. Given its higher yield strength and lower ductility compared to austenitic steels, fabricators may require increased forming forces, larger bending radii, and allowances for springback. While procedures like deep drawing and stretch forming are more challenging, a solution anneal and quench are recommended for deformations exceeding 10%.

Post hot or cold forming, 2507 should be solution annealed and quenched at a minimum of 1925°F, followed by a rapid air or water quench. For optimal corrosion resistance, heat-treated products should undergo pickling and rinsing.

2507 Stainless Steel boasts excellent weldability and can be joined to itself or other materials using SMAW, GTAW, PAW, FCW, or SAW methods. Utilize 2507/P100 filler metal for achieving the desired duplex weld structure.
2507 Stainless Steel typically does not require special measures, except to prevent condensation on cold metal surfaces.

Discover our range of stainless steel sheets, available in exquisite finishes: brushed, 2B smooth, or 8K mirror finish, each designed to meet the highest standards of aesthetic and functionality.

Each stainless steel sheet we supply is protected with a film on the finished side, which can be easily peeled off post-fabrication or installation, ensuring a pristine, mark-free surface. The back side remains unfinished.

2205 Grade Stainless Steel Sheet is a versatile and widely used option, known for its excellent weldability, formability, and corrosion resistance.