Tag: duplex

Duplex Stainless Steels

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.

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.

Outokumpu unveils new products, pricing model

Stainless Steel World Publisher -
Outokumpu launched its latest addition to the duplex product family, the FDX platform, and introduced a new pricing model at the Outokumpu Experience in London, UK.

The new FDX product family exhibits a unique combination of price stable alloying with high strength and substantially improved formability.

4th International Separation Technology Symposium

Stainless Steel World Publisher -
This year’s International Separation Technology Symposium will be held in Cologne, Germany on 19 and 20 June. The Lindlar-based stainless steel specialist Schmidt + Clemens is organising the conference for the fourth time and have been able to attract a distinguished panel of engineers.

Outokumpu creates lighter tanks

Stainless Steel World Publisher -
Outokumpu delivers 150 tons of stainless steel sheet to construction of storage tanks by Japrotek. Japrotek is a Finnish-based company that produces agitators, pressure vessels and large tanks, built on site, for the process industries.

Higher profits for Van Leeuwen marks 2012

Stainless Steel World Publisher -
The Van Leeuwen Pipe and Tube Group have reported an increase in sales while maintaining the operating expenses at the same levels despite difficult market conditions. Their market share in existing markets grew and further expanded with the introduction of new products, thanks to their worldwide presence across markets and product and customer groups.

Duplex Stainless Steel of NSSC chosen for shipbuil

Stainless Steel World Publisher -
Nippon Steel & Sumikin Stainless Steel Corporation’s NSSC®2120, a type of duplex stainless steel has been chosen for the construction of two domestic tankers by Sasaki Shipbuilding Co Ltd and Hakata Shipbuilding Co Ltd.

Outokumpu supplies lean duplex for Nevada plant

Stainless Steel World Publisher -
newsitemOutokumpu has won another contract for a pioneering Crescent Dunes solar plant project in Tonopah, Nevada, USA.

Silver-edged fittings

Stainless Steel World Publisher -
The 20th of May marks the 25th anniversary of the inauguration of Tecninox Srl, manufacturer of butt weld fittings in stainless steel, duplex, superduplex and special alloys. Since its foundation in 1988, Tecninox has come a long way in reaching and surpassing the objectives that it originally set out to achieve.

Duplex NSSC®2120 chosen for shipbuilding

Stainless Steel World Publisher -
Nippon Steel & Sumikin Stainless Steel Corporation’s NSSC®2120 has been chosen for the construction of two domestic tankers for the first time in Japan by Sasaki Shipbuilding Co., Ltd.

Superduplex pipes for the Knarr project

Stainless Steel World Publisher -
BG has contracted Subsea 7 to deliver a bundle solution for the development of the Knarr field. The bundle will be installed in 410m of water depth and will include flowlines for water injection, production and service as well as control tubing and electrical cables.

ASTM standard now cover bolting

Stainless Steel World Publisher -
ASTM International standard presently covers bolting used in the oil & gas industries for offshore drilling platforms, sour gas service, in expanders and compressors in pipeline service, in power generation facilities and in heat exchanger and cryogenic applications.
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The advantages of Duplex Stainless Steels

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. There are several variants available, such as Duplex 2205, Superduplex 2507 or lean duplex with lower nickel content.

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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