Duplex 90 years

Celebrating 90 years of duplex stainless steel.

Duplex stainless steel was developed by Outokumpu in 1930. As we’re marking the 90th anniversary, we collected articles looking back at the big milestones as well as insights from our experts discussing duplex as a material and its future. You can also find articles about duplex in different industries and applications.

Customer education key to adoption duplex grades

Poul-Erik Arnvig tells how duplex grades can be used in a wide variety of applications due to its superior corrosion resistance, strength, and price stability.

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Expert article

Peder Claesson explores how duplex grades can provide new design opportunities.

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Article What is duplex stainless steel
Summary about duplex stainless steel is and how it differs from other stainless steels.
Article History of duplex stainless steel
As we’re marking the 90th anniversary of duplex stainless steel, it’s worth looking back at the big milestones in its development.
Article Sustainability is driving the adoption of duplex stainless steel
Our experts share their thoughts on what the future holds for duplex grades.
Article Customer education key to adoption of duplex grades
Poul-Erik Arnvig tells how duplex grades can be used in a wide variety of applications.
Article Duplex grades provide new design opportunities
Peder Claesson explores how duplex grades can provide new design opportunities.
Article An exhilarating journey in duplex stainless steel
Marie-Louise Falkland answers a few questions about her role in developing duplex grades and educating the market.
Article Expert advice on forming and fabrication of duplex grades
Erik Schedin shares his insight into construction and fabrication of duplex grades as well as developing formable duplex grades.
Article Building the duplex portfolio
Elisabet Alfonsson shares her experience of developing the first lean duplex grade.
Article Duplex in Bridges and structure
Duplex stainless steel is an attractive material for bridges and structures due to its high-strength and extreme corrosion resistance.
Article Duplex in chemical and process industries
The chemical process industry’s use of duplex stainless steel has followed in the footsteps of the pulp and paper industry since the early 1930s when the first duplex grades were developed.
Article Duplex in cleaning up flue gas emissions
Cleaning up flue gas emissions needs a material with excellent corrosion resistance.
Article Duplex in food and beverage industries
Stainless steel is used widely in food and beverage production as it is hygienic and clean.
Article Duplex in heat exchangers
Due to its corrosion resistance duplex stainless steel enables a long life and minimizes process downtime.
Article Duplex in offshore oil and gas
Offshore oil and gas industry needs strong and long-lasting material to carry the flow of oil and gas ashore.
Article Duplex in pulp and paper
Duplex stainless steel has been important to the pulp and paper industry since the early 1930s when the first grades were developed.
Article Duplex in reinforcing bars
Reinforced concrete combines concrete’s ability to withstand compression with steel’s tensile strength.
Article Duplex in transport tankers
Transport tankers need to be reliable and efficient, and duplex stainless steel is often specified because of its high strength and corrosion resistance.