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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Amarinth, a company specialising in the design, application and manufacture of centrifugal pumps and associated equipment to the Oil & Gas, petrochemical, chemical and industrial markets, has launched an innovative range of smaller, lighter, more efficient condensate recovery units optimised for light industrial use to complement its existing range of heavy duty intelligent condensate recovery units (CRUs).
Raccortubi Middle East FZE is continuing to take significant strides forward. It is providing its customers with quality piping solutions in stainless steel, duplex, super duplex, super austenitics and nickel alloys, accompanied by local prices and local availability.
With just a few weeks to go, the final preparations are being made for the 2014 Duplex Seminar & Summit. This is your chance to meet and talk with the world’s leading duplex end users, manufacturers, researchers and suppliers, all in one beautiful location! Whether you want to expand your knowledge on the application of duplex stainless steels, or expand your business in this specialist sector, this highly focused event is for you.
The Duplex Seminar & Summit 2014 is an international platform for materials and corrosion professions specializing in the development and use of duplex stainless steels.
Outokumpu’s lean duplex grades LDX 2101® (EN 1.4162) and LDX 2404® (EN 1.4662) recently received general approval AbZ (Allgemeine bauaufsichtliche Zulassung) by the German national building authority DIBt (Deutsches Institut für Bautechnik).
International metals stockist Broder Metals Group has appointed Mr Dave Smith as UK Sales Executive. He has brought with him significant sales experience gained in various industry sectors.
Smith started his career working for British Steel as a turner and experienced a number of secondments to other companies such as control equipment manufacturer AG Burrell in Chesterfield.
Since its inception in 1979, Voß Edelstahlhandel GmbH & Co. KG has expanded to nine subsidiaries and exports to more than 20 countries.
The basic principles of the company have not been changed since its establishment: an exclusive dedication to trade partners, supplying large range of stainless steel and aluminium products as well as a reliable service through good and bad times.
Known in the UK for supplying cut lengths of welded and seamless nominal bore pipe in 304L and 316L, PipeXtra has announced that the company has added a range of seamless duplex pipe in UNS31803 from ½”NB to 8”NB all of Western European origin to stock.
IPP Group has completed a major new investment as part of its ongoing support for the oil and gas, energy and nuclear industries in the UK and around the globe by installing a new Tee Press, a first of its type in Great Britain.
As well as embarking on a number of significant developments around the world, consisting of new subsidiaries in the Middle East, Brazil and Singapore, Raccortubi continues to focus further efforts on its core strengths.
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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