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Duplex Stainless Steel Sheets and Plates
Duplex stainless steel sheets and plates are known for their exceptional strength and resistance to corrosion, making them ideal for use in harsh environments such as marine, chemical processing, and oil and gas industries. Combining the properties of both austenitic and ferritic stainless steels, duplex grades provide superior performance in terms of durability, stress resistance, and cost efficiency.
Key Benefits of Duplex Stainless Steel Sheets and Plates
- Superior Corrosion Resistance: Duplex stainless steel has excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich and acidic environments.
- High Strength and Durability: Duplex grades offer nearly double the yield strength of conventional austenitic stainless steels, making them suitable for heavy-duty applications.
- Cost-Effectiveness: With a lower nickel content than other high-performance stainless steels, duplex grades are more economical, especially in large-scale industrial applications.
- Excellent Weldability: Duplex stainless steel plates and sheets offer good weldability with minimal risk of intergranular corrosion, ensuring durability in welded structures.
- Improved Fatigue Resistance: Duplex steels are less prone to fatigue, making them ideal for dynamic and high-stress environments.
Grades for Duplex Stainless Steel Sheets and Plates
- Duplex 2205 (UNS S32205): Known for excellent corrosion resistance and high strength, 2205 is one of the most widely used duplex grades, ideal for chemical processing and marine applications.
- Super Duplex 2507 (UNS S32750): Super duplex 2507 offers higher strength and even better corrosion resistance, suitable for offshore, petrochemical, and other highly demanding applications.
- Lean Duplex 2101 (UNS S32101): With lower nickel and molybdenum content, Lean Duplex 2101 provides cost-effective corrosion resistance and is suitable for general industrial applications.
- Other Duplex Grades: Duplex 2304, 329, and other specialized duplex alloys are available for specific applications requiring a balance of corrosion resistance and strength.
Applications of Duplex Stainless Steel Sheets and Plates
- Marine and Offshore: Duplex plates and sheets are used in seawater cooling systems, desalination plants, and offshore oil rigs due to their high resistance to corrosion.
- Chemical Processing: Ideal for tanks, heat exchangers, and piping in chemical processing plants due to their resistance to aggressive chemicals and corrosion.
- Oil and Gas Industry: Widely used in pipelines, pressure vessels, and separators, duplex grades withstand the harsh, corrosive environments of oil and gas extraction and refining.
- Paper and Pulp Industry: Duplex stainless steel resists acidic substances and chloride-rich environments, making it suitable for digesters, bleaching equipment, and processing tanks.
- Architectural Applications: Duplex sheets and plates offer strength and aesthetic appeal, making them a popular choice for building facades, handrails, and structural components.
Manufacturing Standards for Duplex Stainless Steel Sheets and Plates
Our duplex stainless steel sheets and plates meet international standards to ensure quality and performance:
- ASTM A240: Standard for chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels.
- ASTM A480: General requirements for flat-rolled stainless steel and heat-resisting steel plate, sheet, and strip.
- ASME SA240: Pressure vessel specification for duplex stainless steel plates and sheets.
- EN 10088-2: European standard for stainless steels for general purposes, including duplex stainless steel.
- ISO 15156/NACE MR0175: Duplex grades meeting these standards are suitable for sour service applications in oil and gas industries.
Surface Finishes for Duplex Stainless Steel Sheets and Plates
We provide duplex stainless steel sheets and plates in a variety of finishes to meet specific project needs:
- No.1 Finish (Hot Rolled): Mill-finished surface suitable for high-strength industrial applications.
- 2B Finish (Cold Rolled): Smooth, matte finish commonly used for general-purpose applications.
- No.4 Finish (Brushed): Popular for architectural and decorative applications, providing a satin, brushed look.
- BA (Bright Annealed): Reflective finish for aesthetic and sanitary applications.
- Polished: Custom polishing options available to achieve specific surface smoothness or reflectivity for specialized uses.
Customization Options
- Thickness and Width: Available in a wide range of thicknesses from 0.5 mm to 100 mm and widths up to 2000 mm.
- Cut-to-Size and Shaping: Custom cutting, bending, and shaping options are available to meet project specifications.
- Edge Preparation: Choose from various edge finishes such as smooth, deburred, or rounded for ease of installation and enhanced safety.
Quality Assurance
Each duplex stainless steel sheet and plate undergoes comprehensive testing to ensure quality and reliability:
- Mechanical Testing: Includes tensile strength, hardness, and impact resistance to verify durability.
- Corrosion Testing: Conducted to meet standards for chloride and acid resistance.
- Dimensional Accuracy: Precision cutting and shaping to ensure seamless integration in industrial systems.
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Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry