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.

Smith as Broder’s new UK Sales Executive

Stainless Steel World Publisher -
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.

Outokumpu delivers 4,000tns to Husab mine

Stainless Steel World Publisher -
newsitemOutokumpu delivers about 4,000tns of LDX 2404 duplex stainless steel for the Husab uranium mine project in Namibia, Africa.

Voss Edelstahl celebrates its 35th year

Stainless Steel World Publisher -
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.

IPP supports UK industries with Tee Press

Stainless Steel World Publisher -
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.

PipeXtra adds seamless duplex pipe to stock range

Stainless Steel World Publisher -
 
Photo courtesy of PipeXtra 
 
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.

Expanding stock at Raccortubi

Stainless Steel World Publisher -
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.

TR launches new A4 sealed blind rivet

Stainless Steel World Publisher -
newsitemTR Fastenings Norway offers a wide variety of both standard and special fasteners from approved vendors, which are quality assured and compliant with the required legislation, to offshore customers.

Chusovoy shuts down last open-hearth furnace

Stainless Steel World Publisher -
Chusovoy Metallurgical Works, part of United Metallurgical Company, OMK CJSC, and based in the Perm Region, stopped producing steel through its open-hearth furnaces this March. The halt of the open-hearth furnace is the next stage of the company’s large-scale reconstruction that includes rejecting old and unprofitable technologies and turning to market-dictated production, namely the production of casing pipes and high-durability oil well tubing with premium threads.

Outokumpu wins duplex stainless steel contract

Stainless Steel World Publisher -
Outokumpu secured a contract to deliver 22,000t of Outokumpu Duplex 2205 stainless steel to a natural gas field project in Oman. Deliveries will start during the first half of 2014 and continue until 2016.

Steel Dynamics reduces costs in supply chain

Stainless Steel World Publisher -
In addition to industry-standard thickness plate, Steel Dynamics is now stocking some unusual thicknesses, including 16mm, 18mm, 22mm, 28mm and 32mm thick plates across 3 grades of material: 304, 316 and Duplex UNS31803.
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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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