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.

Garrison Crossing built with UR duplex stainless steel

Stainless Steel World Publisher -
As the city of Toronto keeps expanding, accessibility and connectivity are becoming key topics. To ensure a connection between downtown Toronto and the neighborhood of Fort York, the Garrison Crossing was built with UR 2205 Duplex stainless steel from ArcelorMittal Industeel.

Next generation duplex stainless steel

Stainless Steel World Publisher -
NIPPON STEEL Stainless Steel Corporation has developed as a commemorative product of the merger the unique duplex stainless steel “NSSTS2351â€? (23Cr-5Ni-1Mo-N) which is the upper grade for SUS316/316L (hereinafter the “SUS316 seriesâ€?) and able to replace the SUS316 series.

TISCO duplex stainless steel applied to Slowson bridge

Stainless Steel World Publisher -
TISCO duplex stainless steel has been successfully applied to the Slowson steel structure bridge project in Sweden. Sweden's Slowson Bridge is located in the Slowson District of Stockholm, Sweden.

Duplex forgings & tubes in chemical process industries: cautions to be...

Stainless Steel World Publisher -
While duplex stainless steels are the ideal material of choice for process equipment in the chemical process industries, care must be taken during specification, fabrication and storage. The next three issues of Stainless Steel World will present case studies conducted by Dr. Elayaperumal which illustrate the importance of these steps to be able to take advantage of the properties of duplexes in service.

Safer seas with stainless steel

Stainless Steel World Publisher -
Chemical tankers are specialized ships carrying liquid cargoes that may be environmentally hazardous, flammable or highly reactive. They are designed and operated under special rules, and increasingly have built-in molybdenum-containing stainless steel tanks. Sailing around the world, they transport liquid goods safely over long distances. They also represent a significant market for duplex stainless steels and molybdenum.

2205 Duplex Stainless Steel Mesh

Stainless Steel World Publisher -
2205 Duplex Stainless Steel Mesh includes wire mesh, perforated metal and expanded metal. It is known for providing excellent mechanical and anti-corrosive features.

Outokumpu wins duplex stainless steel contract

Stainless Steel World Publisher -
Outokumpu secured a contract to deliver 22,000t of Outokumpu Duplex 2205 stainless steel to a natural gas field project in Oman. Deliveries will start during the first half of 2014 and continue until 2016.

Duplex Stainless Steel of NSSC chosen for shipbuil

Stainless Steel World Publisher -
Nippon Steel & Sumikin Stainless Steel Corporation’s NSSC®2120, a type of duplex stainless steel has been chosen for the construction of two domestic tankers by Sasaki Shipbuilding Co Ltd and Hakata Shipbuilding Co Ltd.

Duplex stainless steels brochure

Stainless Steel World Publisher -
Sandvik has used its extensive metallurgic experience and research and development to produce and publish a new brochure which outlines the company's extensive steel products and capabilities.

Duplex stainless steel rebars

Stainless Steel World Publisher -
Outokumpu has introduced corrosion resistance duplex stainless steel reinforcing bars into the Indian market for the first time.
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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.
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