Duplex
AI Materials can supply F44, F51, F53 and F55 Duplex/Super-duplex in Pipe, Plate and Rings as well as round bar from 10 mm through to 462 mm please contact us with your requirements.
- F44 Duplex - An austenitic stainless steel used in seawater and other aggressive chloride bearing media. This grade has excellent resistance to pitting and crevice corrosion, high resistance to general corrosion and stress corrosion cracking, with a higher strength than conventional austenitic stainless steels, and good weldability.
Specifications – 254SMO, UNS S31254; EN 1.4547 - F51 Duplex - Combines improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys. F51 resists chloride environments and sulphide stress corrosion.
Specifications – UNS S31803; EN 1.4462 - F53 Super-Duplex - Ideal for use in highly corrosive conditions, F53 has excellent resistance to stress corrosion cracking in chloride bearing environments, excellent resistance to pitting , crevice and general corrosion, high mechanical strength, and good weldability.
Specifications – SAF 2507 / UNS S32750 / EN1.4410 - F55 Super-Duplex - With additions of chromium, molybdenum, and nitrogen F55 has enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types.
Specifications – UNS S32760; EN 1.4501
