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Duplex

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. They 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.

Strategic partnership Kanthal/HYBRIT

Sandvik has announced a strategic partnership between Kanthal and HYBRIT, aiming at revolutionizing the steelmaking technology by developing an electric gas heating solution for the hydrogen used to make fossil-free sponge iron.

Sizeable Hasselmus project awarded

Subsea 7 S.A. has announced the awarded of a sizeable contract by OKEA to Subsea Integration Alliance for the Hasselmus project, seven kilometres north west of the Draugen platform in the southern Norwegian Sea.

Experimenting with welding superduplex without filler metal

The main reason for using lean duplex is its significant resistance to chloride stress corrosion cracking because of its dual phases.

NORSOK-M650 qualification of manufacturers

Highland Foundry Ltd, Surrey, BC Canada, is pleased to announce the successful completion of updating the 22Cr (MDS D46) Duplex and 25Cr (MDS D56) Super Duplex casting Qualification Test Records (QTR’s) to the current Rev.5 for NORSOK M-630 Edition 6 and M-650 Edition 4.

Sydney cyclist bridge

Duplex stainless steel forms an integral part in creating one of Sydney’s most exciting new structures. Located in Macquarie Park, the cyclist bridge provides visual flair, safe accessibility, and excitement to the area.

Posco wins bronze for laser welded tubes

Posco won a bronze prize in the annual ISSF Awards for its laser welded duplex stainless (329J4L) tube for gas gas heaters.

Stamicarbon signs licensing contract with Abu Qir

Stamicarbon has signed a contract with Abu Qir Fertilizers Co., in Alexandria, Egypt, for the revamp of one of their urea melt plants (known as Abu Qir 3).

Amarinth deliver API 610 VS4 and OH2 pumps to Bu Haseer

Amarinth has delivered two API 610 VS4 vertical pumps and two API 610 OH2 horizontal pumps to the ADNOC Bu Haseer full field development project.

Sandvik wins coiled tubing contract in Central America

Sandvik has won a contract to supply seamless coiled tubing made from its SAF 2507®super duplex stainless steel to a geothermal plant in Central America.

Duplex World Virtual Conference; 3 afternoons, 3 themes

Did you know that Duplex World Virtual Conference 2021 will run over three afternoons (1-3 June), each with a different theme?