Tag: duplex

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.

Norsok Approves Sandvik Super-Duplex Solid Bar

Stainless Steel World Publisher -
Sandvik has achieved NORSOK® certification for its duplex and new super-duplex solid bar opening up greater application opportunities as they all meet the exacting demands and standards of the oil & gas industry. Extensive work by Sandvik has resulted in the new NORSOK® M-630, Edition 6 accreditation being secured for duplex solid bar grades Sandvik SAF 2205™ and Sandvik SAF 2507™.

New superduplex from Ugitech meets NORSOK standards

Stainless Steel World Publisher -
Ugitech, part of the SCHMOLZ + BICKENBACH Group, has expanded its product portfolio to include the UGI® 4410 superduplex stainless steel.

Sandvik launches Pressurfect for GDI tubing

Stainless Steel World Publisher -
Sandvik is launching the next generation of gasoline direct injection (GDI) engine components for lighter, more energy efficient cars with low emission engines.

Langley Alloys shifts to new premises in Singapore

Stainless Steel World Publisher -
Langley Alloys South East Asia, recently relocated to 9B Jalan Ampas, Singapore, as part of its strategic development plan. The company is expanding its operations rapidly in South East Asia and has now installed cutting facilities to support local customers.

Sun Valley selects Axium Process’ filters

Stainless Steel World Publisher -
Sun Valley, supplier of quality processed and raw nuts to European retailers and major blue chip manufacturers, recently purchased a number of bespoke filter systems designed and manufactured by filtration specialist Axium Process. The company, which traditionally used a sheet filter system for removing nutshell debris from oils, was looking for a flexible system capable of filtering from 2000micron down to 50micron that would require only a small footprint as well as being easy to maintain and clean.

NORSOK M-650 Ed. 4 for Petrol Raccord

Stainless Steel World Publisher -
Under Raccortubi ownership, Petrol Raccord has renewed its commitment to the most up-to-date quality standards, adding NORSOK M-650 Ed.

Sandvik’s express delivery for heat exchanger tubes

Stainless Steel World Publisher -
In 2014, several heat exchangers at an Egyptian Propane Dehydrogenation plant failed unexpectedly and caused a production shutdown.

New pipes by CENTRAVIS for chemical plants

Stainless Steel World Publisher -
In order to improve performance of the existing heat exchanger tubes, CENTRAVIS has developed a novel technology of double quenching of the material (02Ð¥22Ð?5Ð?М3, a Russian analogue to duplex 1.4462/UNS S31803), and in 2014 initiated five-months long corrosion testing, which has proven that the material has superior performance against all types of corrosion, as well as excellent mechanical properties. Heat exchanger tubes of this duplex steel manufactured by CENTRAVIS allows customers to decrease both direct (regular replacement of the tubes) and indirect (repairs and idle times affecting productivity) costs due to significantly higher corrosion resistance of the material of up to 2.8 to 2.9 times.

Tecninox obtains OHSAS 18001:07 certification

Stainless Steel World Publisher -
Tecninox is proud to announce the addition of OHSAS 18001:07 to its already wealthy array of certifications and qualifications.

Abbey forges ahead

Stainless Steel World Publisher -
Family run company, Abbey Forged Products based in Sheffield at the heart of the stainless steel industry in the UK, have enjoyed a very successful time in the last year.
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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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