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.

Sulzer improves energy efficiency

Stainless Steel World Publisher -
Sulzer’s Customer Support Services in Leeds (UK) and Sulzer Pumps Norway AS has won a contract for a retrofit-upgrade programme in Statoil’s Sleipner gas field based on their ability to achieve a much higher performance in a series of replacement cartridge pumps.

Flashback:

Stainless Steel World Publisher -
From materials selection for Kokkola in 1999 to conducting a safety analysis in 2011, Mr Rune Strahl is the man to interview!

Amsterdam hosts a world of water:

Stainless Steel World Publisher -
Check out who our video crew met during the recent Aquatech event.

Nebraska Legislature begins Keystone XL session

Stainless Steel World Publisher -
Nebraska lawmakers began a special session on Tuesday to consider legislation that could affect regulation of TransCanada Corp.'s (TRP) Keystone XL pipeline and other pipeline projects that cross the state.

New duplex filter

Stainless Steel World Publisher -
Schroeder Industries has released its RLD Series Top-ported duplex filter for return line applications. Certain hydraulic systems require continuous, uninterrupted operation. In this situation, shutting down the system to change the filter element is not an option.

Expertise from leading AREVA experts offered

Stainless Steel World Publisher -
A team of leading AREVA experts has confirmed that they will attend the upcoming Nuclear Exchange conference & networking event, which focuses on flow control and corrosion issues in nuclear power generation.

New World Trade Center to use Outokumpu stainless

Stainless Steel World Publisher -
Outokumpu will deliver special stainless quarto plates to the new World Trade Center transit terminal, in New York at Ground zero. The company will deliver around 340mt of stainless steel quarto plates to Cimolai Spa of Italy, one of the main steel manufacturers for the new World Trade Center transit terminal.

Castle Metals UK appoints Phillips

Stainless Steel World Publisher -
Castle Metals UK Limited has appointed James Phillips as their new Managing Director. James will succeed Ian Griffiths, the previous founder and Managing Director; Ian established Metals UK Limited in 2002 and sold the Metals UK Group of businesses to the US based AM Castle Group in 2007 after a rapid period of both organic and acquisitive growth.

Avesta reveals new super duplex wire

Stainless Steel World Publisher -
Avesta Welding has expanded its already extensive duplex product range by introducing a new super duplex flux cored wire: Avesta FCW 2507/P100-PW. The wire is of the rutile type and has been specially developed for the positional welding of steels such as 2507, 1.

Outotec to supply ferrochrome plant

Stainless Steel World Publisher -
Outotec, a Finland based plantmaker, has won a contract from China based Mintal Group Co. (Mintal), a large manufacturer of ferrochrome and stainless steel.
1...383940...71Page 39 of 71


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.

© Copyright 2026 - KCI Media Group - Stainless Steel World