Stainless Steel - Grade 2205/1.4462
Description
Duplex Stainless Steel 2205/1.4462, also known as UNS S32205, is a nitrogen-enhanced duplex stainless steel characterized by its unique microstructure, which consists of approximately 40-50% ferrite and the remainder as austenite. This combination provides excellent mechanical properties and corrosion resistance, making it suitable for various demanding applications.
Chemical Composition
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 21.0 - 23.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 2.5 - 3.5 |
| Carbon (C) | ≤ 0.030 |
| Nitrogen (N) | 0.08 - 0.20 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.020 |
| Iron (Fe) | Balance |
Mechanical Properties
Duplex 2205 exhibits superior mechanical properties compared to standard austenitic stainless steels:
Thermal & Physical Properties
Other Designations
Duplex 2205 is recognized by several designations, including:
Fabrication and Heat Treatment
Duplex 2205 can be fabricated using standard techniques, including welding, machining, and forming. It is weldable with appropriate filler materials (e.g., ER2209). Heat treatment is not typically required for this grade, but if necessary, it should be performed at temperatures below 300 °C to avoid embrittlement.
Applications
Duplex 2205 is widely used in various industries due to its excellent corrosion resistance and mechanical strength. Common applications include:
Supplied Forms
Duplex 2205 is available in several forms, including:
Features
This datasheet provides a comprehensive overview of Duplex Stainless Steel 2205, highlighting its properties and applications in various industries.