Duplex

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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.

Discover the latest innovations in duplex technology with our exclusive Duplex World Update. Download this comprehensive 3-part series now and gain valuable insights from industry experts on groundbreaking applications and developments in duplex material science.

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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SAF 2507® for Mero and Buzios oilfields offshore Brazil

The Mero and Buzios oilfields in the pre-salt Santos Basin are two of the most high-profile and challenging ultra-deepwater projects offshore Brazil and super-duplex stainless steel umbilical tubes were selected for both prestigious projects.

Oregon Dragon Bench in duplex 2209

MX3D has successfully delivered 'Oregon Dragon Bench' designed by Joris Laarman Lab in collaboration with Nike’s Beaverton-based Advanced Innovation Centre. The duplex 2209 sculpture...

Kizomba celebrates 1000th offload

Highland Foundry Ltd in Canada recently congratulated the team of the ExxonMobil Angola on celebrating an important milestone -  the Kizomba A FPSO achieved...

What makes duplex ideal for storage tanks?

Outokumpu’s Duplex Guide for Storage Tanks provides all key information on duplex stainless steel as a storage tank material, from mechanical strength to corrosion...

Download now: Duplex World Update Nr 2

The Duplex World Update series are collections of technical articles about duplex steels, and event updates for the Duplex World Seminar & Summit which...

Piping packages in super duplex stainless steel

Super duplex stainless steels are now widely used in a variety of challenging applications where their strength and resistance to corrosion are well suited....

Kingston components for a Water Treatment Facility in Dubai

The precision components that Kingston Engineering manufacture play a critical role in many varied industry applications right across the globe. Its expertise in machining...

Stronger stainless, lighter structures with duplex grades

Duplex and lean duplex meet the most demanding needs by offering a superior combination of high strength, corrosion resistance, and lowered life cycle costs....

Duplex steel D 6-100 in the product range

Reyher's product range includes numerous stainless steel items in stock. These articles are ready for delivery. The products comprise of austenitic steels made of...

GN Solids Control decanter centrifuges for Dewatering

GN Solids Control is an enterprise that has been committed to the R&D and manufacturing of solid-liquid separation equipment for many years. The company...


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.

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.