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.

Hyundai-Wison JV wins contract refinery project

Stainless Steel World Publisher -
newsitemWison Engineering Ltd. has been officially awarded an EPC contract by PDVSA Petroleo, S.A. (PDVSA), at the Puerto la Cruz oil refinery.

Outokumpu LDX 2101® receives EAM standard

Stainless Steel World Publisher -
Outokumpu LDX 2101® material has been officially approved for use when building pressure equipment. Fabricators can refer to the European Approval of Material (EAM) to show conformity with the European Pressure Equipment Directive (PED) when using flat LDX 2101® ≤10 mm.

Shipbuilding growth boosts steel consumption

Stainless Steel World Publisher -
newsitemArab Steel reported that a boost in orders for new ships and offshore oil rigs in 2012 will result in greater steel consumption at two of the largest shipbuilding yards in the Gulf Cooperation Council.

Nippon Pipeline & Sumitomo Pipeline merger

Stainless Steel World Publisher -
Nippon Steel Pipeline Co., Ltd. and Sumitomo Metal Pipeline and Piping, Ltd. have agreed to merge on 1 October 2012.

Jacobs receives NASA contract

Stainless Steel World Publisher -
Jacobs Engineering Group Inc. has been awarded an indefinite delivery/indefinite quantity (IDIQ) contract to support the design and implementation of soil and groundwater cleanups at Kennedy Space Center (KSC) and Cape Canaveral Air Force Station (CCAFS) in Florida.

Subsea 7 S.A. awarded SURF contract

Stainless Steel World Publisher -
newsitemSubsea 7 S.A. has received a SURF contract valued at approximately USD 400 million from BG Norge Limited, for the development of the Knarr field, in the Norwegian Sector of the North Sea.

Technip wins subsea contract

Stainless Steel World Publisher -
newsitemTechnip was awarded an engineering, procurement, installation and commissioning (EPIC) contract by Dubai Petroleum.

Shell Development awards subsea contract

Stainless Steel World Publisher -
newsitemTechnip has been awarded a large subsea installation contract by Shell Development (Australia) Pty Ltd for the Prelude Floating Liquefied Natural Gas (FLNG) facility moored some 200 kilometers off the north west coast of Australia, in the Browse Basin, at a water depth of approximately 240m.

Wallis new CEO of ThyssenKrupp Stainless USA

Stainless Steel World Publisher -
newsitemThe Board of Managers of ThyssenKrupp Stainless USA, LLC has announced the appointment of Michael Wallis, as Chief Executive Officer of the company, effective 15 June 2012.

New CFO for Sandvik Group

Stainless Steel World Publisher -
newsitemEmil Nilsson has been appointed Executive Vice President & CFO of Sandvik Group and member of Group Executive Management.
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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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