Duplex & Super Duplex Stainless Steels
Duplex and super duplex steels are formed from an approximately 50/50 mixture of austenitic and ferritic phases and are sometimes referred to as austenitic-ferritic stainless steels
Duplex Stainless Steel
Duplex stainless steels combine the best attributes of both austenitic and ferritic stainless steels and provide high strength/ductility with good corrosion resistance to corrosion (including stress corrosion cracking). This gives them a significant advantage over 300 and 400 series stainless steels.
Super Duplex Stainless Steel
Super duplex stainless steels are generally more complex, more highly alloyed materials with PREN (Pitting Resistance Equivalent number) >= 40.0 and offer even higher strength and corrosion resistance making them suitable for very demanding applications such as offshore marine engineering.
A range of duplex and super duplex stainless steels are stocked and released to various specifications (including NORSOK) in a variety of forms. Bar (stocked from ½” to 10” diameter), Forgings (blocks, rings and stepped forgings), Sheet, Plate, Pipe, Tube, Closed die forgings, Castings, Flanges, Bolting, Welding Consumables. Super duplex wire, strand and wire rope available under the trade name AMINOX® 255 (UK Patent 2354264B).
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To find out more about Smiths Metal Centres extensive range of duplex & super duplex stainless steels, click on one of our products on the side menu of this web page.