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Duplex Stainless Steel Bars and Rods
Duplex stainless steel bars and rods are essential for industries requiring high strength, excellent corrosion resistance, and long-term durability. With a unique two-phase microstructure that combines both austenitic and ferritic stainless steel, duplex stainless steel offers enhanced performance characteristics, making it a cost-effective choice for applications exposed to harsh environments, including offshore, chemical processing, and marine industries.
Key Benefits of Duplex Stainless Steel Bars and Rods
- Exceptional Corrosion Resistance: Duplex stainless steel resists pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich and acidic environments.
- High Strength: Duplex rods and bars are nearly twice as strong as standard austenitic stainless steels, providing a robust solution for high-stress applications.
- Cost-Effectiveness: With a lower nickel and molybdenum content than other high-performance alloys, duplex stainless steel is an economical choice without compromising quality.
- Excellent Weldability and Formability: Duplex stainless steel is easy to weld and form, making it ideal for customized parts and assemblies.
- Increased Fatigue Resistance: Duplex steels offer excellent fatigue resistance, ideal for dynamic environments where parts are under constant stress.
Grades of Duplex Stainless Steel Bars and Rods
- Duplex 2205 (UNS S32205): The most widely used duplex grade, known for its corrosion resistance and high strength, suitable for marine and chemical processing industries.
- Super Duplex 2507 (UNS S32750): Super duplex 2507 provides even greater resistance to corrosion and is used in highly demanding environments such as offshore oil and gas platforms.
- Lean Duplex 2101 (UNS S32101): With lower nickel and molybdenum content, Lean Duplex 2101 is a cost-effective solution for general-purpose applications with moderate corrosion resistance needs.
- Other Grades: Grades like Duplex 2304 and 329 offer specialized performance attributes for specific applications that require a balance of corrosion resistance and strength.
Applications of Duplex Stainless Steel Bars and Rods
- Oil and Gas Industry: Duplex bars and rods are widely used in drilling equipment, valves, pipelines, and offshore rigs due to their corrosion resistance and strength.
- Marine and Shipbuilding: Withstanding the corrosive effects of seawater, duplex stainless steel is used in shafts, propellers, fasteners, and marine hardware.
- Chemical Processing: Duplex bars and rods are ideal for tanks, reactors, and equipment exposed to aggressive chemicals.
- Pulp and Paper Industry: Duplex stainless steel resists acidic and chloride-rich environments, making it ideal for pulp and paper manufacturing equipment.
- Construction and Infrastructure: Duplex rods provide strength and corrosion resistance, making them suitable for bridges, structural supports, and rebar in coastal construction.
Manufacturing Standards for Duplex Stainless Steel Bars and Rods
Our duplex stainless steel bars and rods are manufactured to meet global standards for quality and performance:
- ASTM A276: Standard specification for stainless steel bars and shapes.
- ASTM A479: For stainless steel bars used in high-temperature or pressure applications.
- ASME SA182: Specification for forged or rolled alloy and stainless steel for piping components.
- DIN EN 10088-3: European standard for stainless steels, including duplex grades.
- ISO 15156/NACE MR0175: Ensures suitability for sour service applications in the oil and gas industry.
Customization Options
- Diameter and Length: Available in a range of diameters from 5 mm to 500 mm and custom lengths to meet project requirements.
- Cut-to-Length: Custom cutting and shaping options to meet precise specifications.
- Edge Preparation: Deburred, chamfered, or rounded edges for easier handling and installation.
Quality Assurance
Each duplex stainless steel bar and rod undergoes rigorous quality testing to ensure top performance:
- Mechanical Testing: Tensile strength, hardness, and impact resistance tests are conducted to ensure durability.
- Corrosion Testing: Ensures material meets standards for pitting, crevice, and stress corrosion resistance.
- Dimensional Accuracy: Precision machining and finishing guarantee compatibility with various applications.
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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