UNS S32205 Super Duplex Stainless Steel Pipe

​Introduction
UNS S32205, commonly known as Super Duplex Stainless Steel, is a high-performance alloy that offers exceptional corrosion resistance, strength, and weldability. It's widely used in various industrial applications due to its unique combination of properties. This article aims to provide a detailed overview of the chemical composition, mechanical properties, heat treatment state, primary applications, and relevant supply cases from TJC Steel.
Chemical Composition
The chemical composition of UNS S32205 is tailored to provide its superior properties. It contains approximately 22% chromium, 3% molybdenum, and 5-6% nickel. Additionally, it has a significant amount of nitrogen added to enhance its mechanical properties. The low carbon content (<0.03%) minimizes the risk of carbide precipitation and subsequent corrosion.
Mechanical Properties
The mechanical properties of UNS S32205 make it stand out among other stainless steel grades. It exhibits high yield strength, tensile strength, and elongation at break. The super duplex structure also confers excellent fatigue resistance and impact toughness, making it suitable for demanding applications.
Heat Treatment State
UNS S32205 is typically supplied in the annealed condition, which ensures optimal corrosion resistance and mechanical properties. Annealing involves heating the material to a specific temperature, holding it for a period, and then cooling it slowly. This process removes internal stresses, improves ductility, and ensures uniform microstructure.
Primary Applications
UNS S32205 finds widespread use in various industries due to its corrosion resistance, strength, and weldability. It's commonly used in offshore oil and gas applications, chemical processing equipment, desalination plants, and seawater systems. Its resistance to chloride-ion stress corrosion cracking (SCC) and crevice corrosion makes it particularly suitable for use in marine environments.
TJC Steel Supply Cases
TJC Steel has a longstanding commitment to supplying high-quality UNS S32205 super duplex stainless steel pipe to its customers. They offer a wide range of sizes and thicknesses, meeting international standards such as ASTM, ASME, and EN. Their pipes are used in various industries, including oil and gas, chemicals, and marine applications.
One notable supply case involves the provision of UNS S32205 pipes for a major offshore oil and gas project. The pipes were required to withstand extreme corrosive environments and meet strict quality standards. TJC Steel delivered the pipes on time, ensuring the smooth execution of the project.
In another case, TJC Steel supplied UNS S32205 pipes for a desalination plant. The plant required pipes that could withstand the corrosive effects of seawater and produce high-quality drinking water. The pipes supplied by TJC Steel performed reliably, meeting the plant's operational requirements.
Conclusion
UNS S32205 super duplex stainless steel pipe is a versatile material with exceptional properties. Its chemical composition, mechanical properties, and heat treatment state contribute to its suitability for a wide range of applications. TJC Steel's commitment to quality and timely delivery ensures that their pipes meet the highest standards, making them a reliable partner for industries seeking superior stainless steel solutions.