ATX

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.

Sandvik duplex and super duplex used for drilling

Pioneering development by Sandvik Steel and by key customers in the offshore oil and gas industries has seen Sandvik's duplex and super duplex stainless steels become the industry standard for hydraulic tubes in drilling risers, which provide the link between drilling platforms and equipment on the seabed.

Sandvik develops new filler material for 13Cr pipe

Sandvik Steel has developed a super duplex filler metal which matches the properties of 13% chromium super martensitic stainless steel used for pipelines in the oil and gas industries.

Stainless strainers

Nicholson Steam Trap, Walden, NY is offering a broad new line of strainers designed to suit most applications. Its line of Y Strainers line in cast iron, bronze, steel and stainless steel.

Stainless steel: future for architecture

The Lowry arts complex in Salford, UK, contains over 22,000 m2 of stainless steel manufactured by AvestaPolarit.

Corrosion warning

A series of accidents has recently been affecting swimming pools all over Europe, with lampposts, air conditioners, ceilings and other suspended objects falling.

Duplex bridge in Bilbao, Spain

A bridge using duplex stainless steel as the main structural element is being constructed in Bilbao, Spain.

Cummins engine available on Lincoln welder

The Lincoln Electric Company’s Commander™ 500 multi-process, engine-driven welder/generator now offers contractors the choice of the Cummins engine.

Hoke Gyrolok range available in stainless

The Hoke Gyrolok range of instrumentation fittings is now available from Circor in a new line including 316 stainless steel, brass, carbon steel, Monel, Carpenter 20, Hastelloy C276, Inconel, Titanium, 254 SMO, Duplex 2205 and Super Duplex.

Alloy integrated fluid system solution

A challenge posed by the oil and gas industry and an ambitious product development relationship between Sandvik Steel AB and Swagelok Company has led to a new SAF 2507 alloy integrated fluid system solution that performs in highly corrosive, chloride-containing environments, such as oil and gas exploration and production activities.

On-site lock re-coding for valve interlocks

Smith Flow Control has introduced a new series of valve interlocks made of stainless steel.