duplex Archives - Page 57 of 70 - Stainless Steel World

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.

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.

Quality Stainless tubes

Stainless Steel World Publisher - March 18, 2008

Quality Stainless (India) (QSPL) is an integrated manufacturer of welded stainless steel tubes/pipes from its own cold rolled stainless steel coils.

Duplex LNG road tankers

Stainless Steel World Publisher - March 10, 2008

Spain-based INDOX has switched to duplex LDX 2101® in the outer hulls of tankers used to transport LNG.

Moly & duplex pipe order

Stainless Steel World Publisher - February 25, 2008

Sitindustrie has started 2008 by increasing its market position in the business of stainless steel tube, pipes and fittings for the oil & gas application with two orders in Qatar and Malaysia for a total amount of EUR 16.5 million.

New stainless grades at Tube 2008

Stainless Steel World Publisher - February 21, 2008

Sandvik will be showing examples of its comprehensive range of tubular and bar products at Tube 2008 (31 March – 4 April 2008, Dusseldorf, Germany).

Pulp mill duplex packages

Stainless Steel World Publisher - February 19, 2008

Outokumpu has introduced a new service concept for pulp-mill machinery and equipment manufacturers, supplying an optimized package of prefabricated duplex 2205 plate sections for Metso ND to build digesters and reactors for the chemical cellulose producer Sappi Saiccor, both of South Africa.

Sandmeyer adds LDX 2101®

Stainless Steel World Publisher - February 4, 2008

Sandmeyer Steel Co. has added LDX 2101® (UNS-S-32101, EN1.4162) to its extensive line of corrosion resistant stainless steel and nickel alloy plate and plate products.

Special seamless tube mill

Stainless Steel World Publisher - January 28, 2008

Baosteel is planning to build a special seamless steel pipe factory in 2009, with a designed capacity of 23,000tpy at an estimated investment of USD 37.5 million.

Duplex plate heat exchangers

Stainless Steel World Publisher - January 25, 2008

Gansu Lanke Petrochemical Equipment (Lanke), has successfully replaced conventional austenitic stainless steel of type 316L (1.4404) in plate air-cooler and plate shell heat exchangers with duplex 2205 (1.4462) from Outokumpu.

BUTTING contract completed

Stainless Steel World Publisher - January 15, 2008

BUTTING has recently completed the largest single order for risers, wellheads and associated components for a longstanding customer in the well construction industry, for whom BUTTING supplied 8 wellheads and 408 risers.

LDX 2101® for road tankers

Stainless Steel World Publisher - December 11, 2007

Three separate fabricators in Italy make road tankers for bitumen and other loads using Outokumpu’s duplex grade LDX 2101®.

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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. There are several variants available, such as Duplex 2205, Superduplex 2507 or lean duplex with lower nickel content.

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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