Duplex 90 years
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.
Duplex 90 Years
Case Stainless Steel Yachts
Maximal performance with duplex stainless steel
As Håkan Rosén examined a sailing yacht of stainless steel, he realized it would be too heavy. Inspired by the Vikings, Håkan started to explore how the Vikings managed to sail the seas in wooden l...
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Building the duplex portfolio
As we celebrate 90 years since the introduction of the first duplex stainless steel grades, Elisabet Alfonsson shares her experience of developing the first lean duplex grade and providing technica...
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Expert advice on forming and fabrication of duplex grades
As we celebrate 90 years since duplex stainless steel was developed, we caught up with Erik Schedin. He recently retired as design and fabrication manager at our Avesta Research Center in Sweden an...
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An exhilarating journey in duplex stainless steel
With 90 years having passed since duplex stainless steel was developed at Avesta in Sweden, Marie-Louise Falkland, Outokumpu’s Senior Technical Manager, answers a few questions about her role in de...
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History of duplex stainless steel
As we’re marking the 90th anniversary of duplex stainless steel in September 2020, it’s worth looking back at the big milestones in its development.
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Sustainability is driving the adoption of duplex steel
Duplex stainless steel was developed by Outokumpu in 1930, giving us 90 years of experience. We asked some of our experts what they think the future holds for duplex grades.
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Duplex grades provide new design opportunities
To mark the 90th anniversary of duplex stainless steel, Peder Claesson, Head of Project Sales, looks at how the high strength and corrosion resistance of duplex stainless steel provide added value ...
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How duplex stainless steel helped industry react to world events
Although it was the time of the Great Depression, the 1930s were also a time of technological developments that brought new opportunities. Skyscrapers like the Chrysler building were springing up, ...
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Customer education key to adoption of duplex grades
Duplex stainless steel offers superior corrosion resistance, strength, and price stability that makes it an attractive alternative to the popular austenitic stainless steel grades of 304 and 316. I...
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Duplex in bridges and structures
Although duplex stainless steel was developed in 1930, structural engineers and architects didn’t discover its potential for bridges until the late 1990s, when architect Estudio Guadiana designed t...
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Duplex in cleaning up flue gas emissions
Burning of fossil fuels in power stations and on board ships produces sulfur dioxide, a major pollutant. Therefore, flue gas desulfurization (FGD) units are needed to clean up their emissions.
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Duplex in food and beverage industry
Stainless steel is used widely in food and beverage production as it is hygienic and clean. However, although duplex stainless steel was developed in 1930, it wasn’t widely adopted by the food and ...
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What is duplex stainless steel
Here is short summary about duplex stainless steel is and how it differs from other stainless steels.
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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 by Outokumpu. It is used in many applications from preparation of...
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Duplex in heat exchangers
Manufacturers of tube heat exchangers have used duplex grades since the 1960s and 1970s due to their corrosion resistance. Duplex stainless steel enables a long life and minimizes process downtime....