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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Further to the development of Fusion XP™ precision manufactured welded fittings range, Hydrasun has recently secured almost GBP 1m of new business from key customers who are working on a number of new major subsea projects.
Raccortubi Group will be showcasing its fastest delivery possibilities at TUBE 2018 in Düsseldorf. In addition, the extensive availability of raw material in sheets and plates in duplex, super duplex and 6mo up to 50mm, and in titanium up to 15mm, allows for fulfilling deliveries in 4-6 weeks thanks to a dedicated production line at Petrol Raccord called Fast Track.
DoPent features pentagonal, double-sided inserts with 10 effective cutting edges for reduced cost per edge. The new C-class insert helps minimize the axial runout when mounted on the cutter for superior surface finish quality.
Gazprom and ChelPipe, have signed a roadmap for the development and batch production of pipes for offshore projects. In accordance with the document, ChelPipe will adopt the technology to produce pipes from the 25Cr super duplex steel and the UNS N06625 nickel alloy.
A commitment to following American Society of Mechanical Engineers (ASME) standards is the first step in achieving a high level of safety in pressure vessel performance.
Sverdrup Steel have opened new subsidiary company in Busan, Korea. Sverdrup Steel Korea Ltd will be managed by GM Min-young Jung, who has vast experience within the domestic Korean high performance steel market.
Nickel Institute is pleased to announce that it has published a fully revised second edition of Stainless Steels and Specialty Alloys for Pulp, Paper and Biomass Conversion a popular and practical guide for mill and project engineers within the pulp, paper and biomass sector.
The new face of oil and gas discovery will be with deep wells. As compared to shallow wells, deep wells normally need high performance nickel based alloys.
BUMAX AB has introduced many new and unique products to the market during the last years. The most recent addition is BUMAX® DX 129 which is a duplex stainless steel product (1.
The organizers of the Duplex World Seminar & Summit are pleased to announce that the 2018 Chairman is Mr David Barber, Global Improvement Leader of the Materials Engineering Discipline at The Dow Chemical Company.
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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