Duplex

Click image to download PDF now!

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.

If you wish to include your news release on our website and email newsletter, please feel free to contact the editor.

Tenova secures a contract from Valbruna ASW Inc.

Tenova was awarded a contract by Valbruna ASW Inc. for the supply of a new EAF (Electric Arc Furnace). Valbruna ASW Inc. is a premier specialty steel-maker and the EAF will be installed at its facility located in Welland, Ontario (Canada).

Innovate UK with TWI and Langley support Adv-Flow

The ‘Development of Advanced, Highly Corrosion Resistant Coriolis Mass Flow Meters (Adv-Flow)’ is an innovative research project supported by Innovate UK, led by KROHNE Limited, with TWI and Langley Alloys.

Stainless duplex plates by Industeel for New Slussen

The construction of the New Slussen is the major urban transformation project in Sweden. Working in collaboration with the City of Stockholm, the SEK 12bn project seeks to create a dynamic urban quarter, responding to its historic context and transforming the city centre.

CEVISA launches CHP 60G INV bevelling machine

The Spanish company Castellanos y Echevarria - Vitoria, S.A. continues the development of its chamfering program with the commercialization of its new CHP 60 G INV bevelling machine.

“Niagara Foot” and “All Terrain Knee” for BUMAX

BUMAX has been picked as the sole supplier of screws for advanced and durable prosthetic knees by a German manufacturer of a waterproof and submersible prosthesis knee and foot system, WEIGEL+ medical.

TWI begins Adv-Flow project

TWI announced the start of an Innovate UK funded research project entitled ‘Development of Advanced, Highly Corrosion Resistant Coriolis Mass Flow Meters (Adv-Flow).’ The project is led by KROHNE Limited, with partners TWI and Langley Alloys.

Latest product catalogue from Sankyo

Sankyo & Co., Ltd has just released its latest product catalogue, outlining the extensive product offering the Japanese trading company has on offer.

VDM adopts Henkel’s nitric acid-free pickling process

VDM Metals Group, a German manufacturer of nickel alloys and special stainless steels, has adopted Henkel´s next-generation nitric acid (HNO3) free Bonderite C-CP (Cleanox) pickling process for dedicated wire products.

Stadler signs a framework agreement with ATM

Stadler and Azienda Transporti Milanesi S.p.A. (ATM) have signed a framework agreement for the supply of up to 80 TRAMLINK trams for the city of Milan.

Amarinth succeeds against Covid-19 challenges

Amarinth has succeeded against the many challenges posed by Covid-19 to achieve an on-time delivery of four high-capacity pumps to a producing oil field, Equatorial Guinea.


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.