UNS S31803 and UNS S32205 duplex stainless steel pipes and tubes are engineered for demanding applications requiring superior mechanical strength and excellent corrosion resistance. These duplex grades combine ferritic and austenitic phases, offering high resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. They are ideal for use in oil & gas, chemical processing, desalination, and marine environments where durability and performance are critical.
Key Specifications:
| Property | Specification |
|---|---|
| Grades | UNS S31803 (Duplex 2205), UNS S32205 (Enhanced Duplex 2205) |
| Forms | Seamless, welded, and fabricated pipes and tubes |
| Sizes |
|
| Standards | ASTM A790, ASTM A789, ASME SA790, ASME SA789 |
| Corrosion Resistance | High resistance to localized corrosion, including pitting and stress corrosion cracking |
| Mechanical Properties |
|
| Applications | Heat exchangers, pressure vessels, piping systems, desalination equipment, and marine structural components |
Icon Steel is proud to offer UNS S31803 and UNS S32205 duplex stainless steel pipes and tubes, engineered for environments that require superior strength and excellent corrosion resistance. These duplex stainless steel grades combine the best attributes of both austenitic and ferritic stainless steels, making them ideal for demanding applications across a range of industries.
Specifications and Properties
UNS S31803 Duplex Stainless Steel Pipes and Tubes UNS S31803, also known as 2205, is a duplex stainless steel alloy that provides a good balance of excellent corrosion resistance, high strength, and good weldability. It is particularly effective in combating corrosion problems caused by chloride-bearing cooling waters and other aggressive chemical process fluids.
| Property | Specification |
|---|---|
| Standard | UNS S31803 |
| Available Forms | Seamless and welded pipes and tubes |
| Applications | Oil and gas exploration, processing equipment, transport and storage, chemical process industries, pulp and paper manufacturing, and marine environments. |
Specifications and Properties
UNS S32205 Duplex Stainless Steel Pipes and Tubes UNS S32205 is similar to UNS S31803 but has enhanced corrosion resistance and strength due to its higher chromium, molybdenum, and nitrogen content. It is optimized to provide better performance in corrosive environments where resistance to general corrosion and chloride stress corrosion cracking is important.
| Property | Specification |
|---|---|
| Standard | UNS S32205 |
| Available Forms | Seamless and welded pipes and tubes |
| Applications | More demanding environments than S31803, including desalination plants, high-pressure RO plants and seawater piping, and other high-stress applications. |
Dive into our comprehensive product gallery to see the wide range of stainless steel products we offer. Each product is designed to meet the highest standards and cater to various applications across different industries. Below, you will find images and brief descriptions of each product category to help you choose the right one for your project.
Call expert
+971 55 309 9915
Write email
info@iconsteel.ae
Visit office
Burjuman Business Tower BT 20-10, Khalid Bin Walid Road, Dubai, UAE
Why Choose Icon Steel for Duplex Stainless Steel Pipes and Tubes?
Superior Corrosion Resistance
Both UNS S31803 and S32205 offer excellent resistance to a wide range of corrosive environments, significantly outperforming standard austenitic grades like 304 and 316L.
High Strength
These duplex stainless steels provide greater strength, allowing for thinner material usage and resulting in cost savings from reduced material weight without compromising safety or reliability.
Wide Range of Applications
With their balanced properties, these duplex stainless steels are adaptable to numerous industrial challenges, providing versatile solutions across various sectors.
Customization and Technical Support
We offer pipes and tubes in various sizes, thicknesses, and lengths, with custom options available to meet specific project requirements. Our team provides comprehensive support to ensure the best material selection and application success.
FAQ
UNS S32205 is an improved version of UNS S31803, with slightly higher chromium, molybdenum, and nitrogen content, offering better corrosion resistance and strength, especially in chloride-rich and high-stress environments.
Yes, both grades are highly resistant to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments, making them ideal for seawater piping and desalination plant applications.
Yes, UNS S31803 and S32205 can be welded using conventional welding techniques. However, proper care must be taken to maintain the material’s duplex structure and avoid sensitization or heat-affected zone issues.