Tag: duplex stainless steel

What is duplex stainless steel?

Duplex stainless steel is a type of stainless steel that contains a microstructure of both austenite and ferrite. Austenite and ferrite are two different crystal structures that form when stainless steel is cooled from high temperatures. What makes duplex steel unique is that it combines the benefits of both austenite and ferrite structures. Austenite provides good corrosion resistance and ductility, while ferrite offers higher strength and stress corrosion cracking resistance. This combination of properties makes duplex stainless steel well-suited for applications in environments where both corrosion resistance and strength are important, such as in chemical processing, oil and gas, and marine industries.

Duplex stainles steel advantages

Duplex stainless steel offers several advantages due to its unique microstructure and combination of properties. Some of the key advantages include:

• Corrosion and stress corrosion cracking resistance
• Strength
• Abrasion and erosion resistance
• Good weldability
• High thermal conductivity

The advantages of duplex stainless steel make it a preferred choice in situations where a balance between corrosion resistance, strength, and other mechanical properties is required for optimal performance and durability. Below you can find a selection of articles related to austenitic stainless steels.

Offshore sampling

Stainless Steel World Publisher - February 3, 2003

A Jiskoot fastloop sampling system has been selected for installation at a Shell offshore platform in Malaysia.

Stainless Steel World 2001: day 2

Stainless Steel World Publisher - November 15, 2001

Lively workshops, fascinating papers, a seminar on market research and of course the traditional conference dinner were among the highlights of the Stainless Steel World 2001 Conference and Expo's second day.

Corrosion warning

Stainless Steel World Publisher - August 20, 2001

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

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Applications of duplex stainless steel

Duplex stainless steel is used in various industries, where it unique combination of properties addresses specific challanges and requirements. Some common applications include:

• Chemical and Petrochemical Industry: Duplex stainless steel is widely used in chemical processing equipment, such as reactors, heat exchangers, and pipelines, where it provides excellent resistance to corrosive chemicals and high temperatures.
• Oil and Gas Industry: It is used in offshore and onshore oil and gas platforms, subsea pipelines, and equipment due to its resistance to chloride-induced corrosion, stress corrosion cracking, and high strength properties.
• Heat Exchangers: Its good thermal conductivity and corrosion resistance make it suitable for heat exchangers used in various industries, including chemical, petrochemical, and HVAC.
• Water Treatment: It is used in water treatment plants for components like tanks, piping, and valves that come into contact with chemically aggressive water and treatment chemicals.
• Medical and Pharmaceutical Equipment: Duplex stainless steel is used in medical devices and pharmaceutical equipment that require both corrosion resistance and ease of sterilization.
• Automotive Industry: Some high-performance exhaust systems and components use duplex stainless steel due to its ability to withstand high temperatures and corrosive gases.
• Desalination Plants: Duplex stainless steel is suitable for desalination plants where it can withstand the aggressive seawater environment and corrosive chemicals used in the desalination process.