Duplex stainless steels have a ferritic-austenitic microstructure, in roughly equal proportions 50% ferrite and 50% austenite. Duplex combines many of the attractive properties of ferritic and austenitic stainless steels into one.
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Different variants for Duplex
Duplex stainless steels are designed to provide better corrosion resistance, in particular to stress corrosion and pitting corrosion. The microstructure leads to higher strength than standard austenitic stainless steels such as Type 304 or 316. Duplex stainless steels have become more and more popular in recent years. There are several variants available, such as Duplex 2205, Superduplex 2507 or lean duplex with lower nickel content.
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Daniel Ambrose has joined the Sverdrup Steel UK team as Head of Sales UK – Flat Products.
Daniel has extensive knowledge of the duplex/stainless steel...
Special Quality Alloys Ltd is celebrating the announcement that they will be honored with the coveted Queen’s Award for Enterprise in the category of...
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MX3D has successfully delivered 'Oregon Dragon Bench' designed by Joris Laarman Lab in collaboration with Nike’s Beaverton-based Advanced Innovation Centre. The duplex 2209 sculpture...
Highland Foundry Ltd in Canada recently congratulated the team of the ExxonMobil Angola on celebrating an important milestone - the Kizomba A FPSO achieved...
Outokumpu’s Duplex Guide for Storage Tanks provides all key information on duplex stainless steel as a storage tank material, from mechanical strength to corrosion...
Corrosion Resistance: Duplex stainless steel has excellent corrosion resistance due to its high chromium and molybdenum content. It is particularly resistant to stress corrosion cracking and pitting, which makes it suitable for use in harsh environments.
Strength: Duplex stainless steel is much stronger than conventional austenitic stainless steels, which allows for thinner and lighter constructions without sacrificing durability.
Toughness: Duplex stainless steel has a high toughness, which means it is resistant to brittle fracture and impact. This property makes it suitable for use in cryogenic applications.
Cost-effectiveness: Although duplex stainless steel is more expensive than conventional austenitic stainless steels, its superior properties can lead to cost savings in the long run by reducing maintenance and downtime.
Versatility: Duplex stainless steel can be used in a wide range of applications, including chemical processing, oil and gas, marine, and pulp and paper industries. It is also used in construction and architecture due to its aesthetic appeal.
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