Stainless steel
EU
1.4462 - 329LN - X2CrNiMoN22.5.3 - Z3CND 22-05 Az
US
AISI 318LN - UNS S31803 - F51
Duplex stainless steel, specially designed for use in hostile chloride-rich environments
AISI 318LN stainless steel - 1.4462 - Available from stock
The 1.4462 alloy, also known as 329LN, X2CrNiMoN22-5-3 or UNS S31803, is a duplex stainless steel. This type of steel combines properties of austenitic and ferritic structures, offering the ideal balance between corrosion resistance and superior mechanical properties.
Technical summary of this steel:
- Europe: 1.4462 | 329LN | X2CrNiMoN22.5.3 | Z3CND 22-05 Az
- USA: UNS S31803 | F51
- Europe: EN 10028-7 | EN 10088-2 | EN 10088-3 | EN 10088-4 | EN 10088-5 | EN 10216-5 | EN 10217-7 | EN 10222-5 | EN 10250-4 | EN 10253-3 | EN 10253-4 | EN 10263-5 | EN 10270-3 | EN 10272 | EN 10294-2 | EN 10296-2 | EN 10297-2 | EN 13445-2 | EN 13480-2 | NF S 94-090
- USA: ASTM A240 | A789 | A790 | A928 | A479 | A276 | A182
- Corrosion resistance: excellent resistance in chloride-rich environments, higher than that of standard austenitic stainless steels.
- Superior mechanical properties: higher tensile and yield strength than austenitic steels thanks to its duplex structure.
- Good stress corrosion resistance, particularly in chloride environments, an essential feature for maritime applications and some chemical applications.
- Although duplex stainless steels can undergo heat treatment to enhance their properties, the 1.4462 alloy is generally used in its solution state (heat treating at around 1020-1100°C / 1868-2012°F) to optimise its corrosion resistance and mechanical properties.
Properties
- Corrosion resistance: excellent resistance in chloride-rich environments, higher than that of standard austenitic stainless steels.
- Superior mechanical properties: higher tensile and yield strength than austenitic steels thanks to its duplex structure.
- Good stress corrosion resistance, particularly in chloride environments, an essential feature for maritime applications and some chemical applications.
Standards and Designations
Heat treatment
- Although duplex stainless steels can undergo heat treatment to enhance their properties, the 1.4462 alloy is generally used in its solution state (heat treating at around 1020-1100°C / 1868-2012°F) to optimise its corrosion resistance and mechanical properties.
Special advantages
Conclusion
Application
- 1.4462 stainless steel is specially designed for hostile environments, particularly chloride-rich environments. It is widely used in the chemical industry, water treatment, the oil and gas sectors, as well as maritime applications.
- Used for making pumps, valves, pipes, desalination systems and other critical components often exposed to corrosive conditions.
- The 1.4462/UNS S31803 alloy is known for its corrosion resistance in chloride-rich environments, superior mechanical characteristics, and stress corrosion resistance. This makes it an ideal choice for a variety of applications, especially in hostile environments.
.webp)
