Duplex 2205 Pipes & Tubes, offered by Neonox Overseas, are among the most reliable and versatile stainless steel solutions used across industries that demand both strength and corrosion resistance. Duplex 2205 is a nitrogen-enhanced duplex stainless steel with a balanced microstructure of austenite and ferrite, giving it superior mechanical properties compared to conventional stainless steels. It delivers nearly double the strength of austenitic grades like 304 and 316, while also providing improved stress corrosion cracking resistance. This unique combination makes Duplex 2205 an ideal choice for chemical processing, oil and gas, marine, pulp and paper, desalination, and structural applications where exposure to harsh environments is constant.
Our Duplex 2205 Pipes & Tubes are manufactured in both seamless and welded forms, conforming to ASTM, ASME, and international standards. They are available in round, square, rectangular, hydraulic, and instrumentation tubing forms, giving industries multiple options based on project requirements. These pipes and tubes are offered in standard schedules (SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, and XXS) with outer diameters ranging from 6 mm to 610 mm and wall thicknesses from 0.5 mm to 50 mm. Customers can choose cut lengths or long random lengths up to 12 meters, ensuring flexibility in application.
The chemical composition of Duplex 2205 (22% Chromium, 5–6% Nickel, 3% Molybdenum, and Nitrogen) offers excellent resistance to chloride-induced stress corrosion cracking and pitting, which is a common problem in aggressive chloride environments such as seawater and brine solutions. Its high tensile strength (≥ 620 MPa) and yield strength (≥ 450 MPa) make it suitable for high-pressure and high-temperature applications. Duplex 2205 maintains good impact toughness even at sub-zero temperatures, making it suitable for cryogenic applications.
Neonox Overseas ensures that all Duplex 2205 Pipes & Tubes are tested for quality through destructive and non-destructive testing, including PMI, hydrostatic tests, ultrasonic tests, and third-party inspection, ensuring complete compliance with international standards. Our commitment to high-quality finishing, dimensional accuracy, and on-time delivery has made us a trusted supplier across global markets.
Applications of Duplex 2205 Pipes & Tubes include heat exchangers, pressure vessels, condensers, pipelines, offshore oil platforms, seawater equipment, chemical storage tanks, food processing equipment, and architectural structures. The excellent weldability and formability of this grade also make it adaptable for fabrication and custom engineering projects.
In industries where both strength and corrosion resistance are critical, Duplex 2205 remains the material of choice. Neonox Overseas supplies these pipes and tubes worldwide, catering to industries in Asia, Europe, Africa, the Middle East, and the Americas. With a wide stock range and export capability, we ensure our customers receive durable, high-performing Duplex 2205 Pipes & Tubes at competitive prices.
| Property | Duplex 2205 |
|---|---|
| UNS Number | S32205 / S31803 |
| EN Number | 1.4462 |
| Equivalent Standards | ASTM A790 / A789 / A928 | ASME SA790 / SA789 |
| Available Types |
Seamless Pipes & Tubes Welded Pipes & Tubes ERW Pipes Fabricated Pipes Round Pipes Square Pipes Rectangular Pipes Hydraulic Tubes Instrumentation Tubes Heat Exchanger Tubes Condenser Tubes Boiler Tubes Capillary Tubes Electropolished Tubes U-Bend Tubes |
| Outer Diameter (OD) | 6 mm to 610 mm |
| Wall Thickness | 0.5 mm to 50 mm |
| Length | Single Random, Double Random, Cut Lengths up to 12 Meters |
| Density (g/cm³) | 7.8 |
| Melting Point (°C) | 1350 – 1450 |
| Tensile Strength (MPa) | ≥ 620 |
| Yield Strength (0.2% MPa) | ≥ 450 |
| Elongation (%) | 25 |
| Hardness (HB) | ≤ 290 |
| Corrosion Resistance | Excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking |
| Weldability | Good (recommended solution annealing after welding) |
| Applications | Heat Exchangers, Pressure Vessels, Chemical Processing, Oil & Gas Pipelines, Marine Equipment, Food Processing, Structural Applications, Desalination Plants |
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