Stainless steel
EU
1.4501 | X2CrNiMoCuWN25-7-4
US
SUPER DUPLEX F55 | UNS S32760
Structural stainless steel with chromium, nickel and molybdenum, excellent corrosion resistance in acidic and chloride environments. Mainly used in the chemical and energy industries.
F55 stainless steel - 1.4501 - Available from stock
The 1.4501 alloy, also known under the names X2CrNiMoCuWN25-7-4, F55 and UNS S32760, is a super duplex stainless steel that efficiently combines chromium, nickel and molybdenum, with added tungsten and copper. This make-up gives it both anaustenitic and ferritic structure, offering exceptional corrosion resistance, especially in acidic and chloride environments, as well as superior mechanical properties.
Technical summary of this steel:
- Europe: 1.4501 | X2CrNiMoCuWN25-7-4
- USA: SUPER DUPLEX F55 | UNS S32760
- Europe: EN 10028-7 | EN 10088-2 | EN 10088-3 | EN 10216-5 | EN 10217-7 | EN 10222-5 | EN 10250-4 | EN 10253-3 | EN 10253-4 | EN 10272 | EN 10297-2 | EN 13445-2 | EN 13480-2 | NF S 94-090
- USA: ASTM A182 | A240 | A276 | A314 | A473 | A479 | A815 | A790 | A928
- High corrosion resistance: particularly effective against corrosion in acidic and chloride-rich environments, more than standard duplex stainless steels.
- Superior mechanical characteristics, combining high tensile strength, good ductility and exceptional fatigue strength.
- Stress corrosion resistance higher than that of conventional austenitic and duplex stainless steels.
- The F55/1.4501 alloy is often used in its aged solution state in order to optimise its mechanical properties and corrosion resistance.
- The required heat treatment will depend on your application and manufacturing requirements.
Properties
- High corrosion resistance: particularly effective against corrosion in acidic and chloride-rich environments, more than standard duplex stainless steels.
- Superior mechanical characteristics, combining high tensile strength, good ductility and exceptional fatigue strength.
- Stress corrosion resistance higher than that of conventional austenitic and duplex stainless steels.
Standards and Designations
Heat treatment
- The F55/1.4501 alloy is often used in its aged solution state in order to optimise its mechanical properties and corrosion resistance.
- The required heat treatment will depend on your application and manufacturing requirements.
Special advantages
Conclusion
Application
- This alloy is mainly used in the chemical and energy industry, where high corrosion resistance is necessary. This includes equipment for chemical treatment, seawater desalination systems, and components exposed to harsh marine environments.
- Suitable for applications that require exceptional durability, such as heat exchangers, pumps, valves, and pipes in extreme service conditions.
- The 1.4501/F55/UNS S32760 alloy is known for its excellent performance in extremely corrosive conditions, offering the ideal combination of corrosion resistance, superior mechanical properties and durability for rigorous industrial uses.
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