Stainless Steel Duplex Round Bar

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Stainless Steel 32205, also known as Duplex Stainless Steel or UNS S32205, is a duplex stainless steel alloy with a combination of austenitic and ferritic microstructures. It offers excellent corrosion resistance, high strength, and good weldability, making it suitable for various applications in industries such as chemical processing, oil and gas, marine engineering, and more. Duplex Stainless Steel round bars, including those made from Stainless Steel 32205, are commonly used where corrosion resistance, strength, and durability are crucial. Here's a detailed description:

1. Composition: Stainless Steel 32205 Duplex round bars typically contain about 22% chromium, 5-6% nickel, 3% molybdenum, and 0.15-0.20% nitrogen, along with balanced amounts of iron and other alloying elements. This dual-phase microstructure of austenite and ferrite contributes to its exceptional corrosion resistance and mechanical properties.

2. Corrosion Resistance: Stainless Steel 32205 Duplex exhibits excellent corrosion resistance in various environments, including seawater, chloride-containing solutions, acids, and alkaline media. It offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking compared to standard austenitic stainless steels.

3. High Strength: Stainless Steel 32205 Duplex round bars offer high strength, with significantly higher yield strength and tensile strength compared to conventional austenitic stainless steels. This high strength makes it suitable for structural components and equipment subjected to heavy loads and high-stress conditions.

4. Weldability: Stainless Steel 32205 Duplex round bars have good weldability when appropriate welding procedures and filler materials are used. However, care should be taken to control heat input and interpass temperature to minimize the risk of sensitization and preserve the corrosion resistance of the welded joints.

5. Applications: Stainless Steel 32205 Duplex round bars find use in various industries and applications, including:

   • Chemical processing: Heat exchangers, pressure vessels, and piping systems handling corrosive chemicals.
   • Oil and gas: Pipelines, subsea equipment, offshore platforms, and components exposed to aggressive environments.
   • Marine engineering: Shipbuilding, desalination plants, and marine structures requiring high corrosion resistance and strength.
   • Pulp and paper industry: Digesters, evaporators, and bleach plants in pulp and paper processing facilities.

6. Surface Finish: Stainless Steel 32205 Duplex round bars are available in various surface finishes, including black finish (as hot rolled), pickled, bright annealed, and polished finishes, depending on the application requirements.

7. Customization: Stainless Steel 32205 Duplex round bars can be custom-cut to specific lengths and diameters according to customer requirements. They are available in different sizes and grades to suit various applications.

8. Standards and Specifications: Stainless Steel 32205 Duplex round bars are typically manufactured to meet industry standards such as ASTM A276, ASTM A479, and ASTM A182, ensuring quality and consistency.

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SS DUPLEX AND SUPER DUPLEX AVAILABLE READY STOCK MATERIAL

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