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A Special Introduction to Super Duplex

Special Piping Materials is known for the high volume of Duplex and Super Duplex products that it stocks.

Our staff are extremely knowledgeable about these material grades, the benefits and the numerous situations they can be used in. Here we explain the science behind the steel.

The Duplex and Super Duplex material grades have only started to become widely used in the past 30 years and, consequently, many people are still unclear on the benefits.

Duplex stainless steels appeared in the marketplace due to the need to combat the shortcomings of austenitic and ferritic steels. It was found that a mixture of these two materials resulted in advantages such as higher strength, reduced weight, good weldability and increased resistance to stress corrosion cracking. These characteristics mean that Duplex steels have naturally become popular in applications such as pressure vessels, cooling pipes and storage tanks.

As fantastic as Duplex steel is, people still saw room for development and this resulted in Super Duplex being created. Super Duplex alloys have a high chromium and molybdenum content which allow it to have an even better resistance to corrosion cracking and erosion, as well as having a high thermal conductivity and a low thermal expansion.

The unique properties of Super Duplex mean that it is in high demand for a wide range of scenarios such as pipes in the oil and gas industry, cargo vessels and heat exchangers.

Les Buckley, Founder and Group Managing Director of Special Piping Materials, said: “Special Piping Materials has always been at the forefront of the piping world due to our determination to supply our clients with the materials grades that best suit their requirements. We recognised early on that ensuring we have a large stock of Super Duplex and Duplex products mean that we are able to accommodate a vast array of different projects.

“Over the years we have developed relationships with some of the best mills around the globe who have the same commitment to excellence that we have. This means that we are confident in the products that we supply and know we can rely on their performance when they are put to test in the field.”

Special Piping Materials can supply many different products in both Super Duplex and Duplex such as welded pipes, butt weld fitting, flanges, forged fittings, seamless pipes and much more. They are available to buy from any of the company’s offices across the world.

Fast, efficient delivery to your exact specification. Special Piping Materials is as committed to your project as you are.

Speak to one of our seven worldwide
offices today


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