Riton Metal Industries

DUPLEX STAINLESS STEEL

Riton metal industries is well known for the high-quality Duplex products that we source and stock for our discerning clients around the world.  We can provide a whole range of different products in duplex, including specialist fittings & flanges, pipe, plate, sheet, tube and bar.

For more information about our Duplex Stainless-Steel range of products, please contact your local Special Piping Materials sales adviser today.

DUPLEX FROM SPECIAL PIPING MATERIALS

Duplex stainless steel is a very useful metal that is used the world over. It gets its name from the fact that it consists of two different grades of metal.

Essentially, Duplex is a Fe-Ni-Cr alloy that has a two-phase ferritic-austenitic stainless-steel microstructure when it is at room temperature.

Duplex steels are characterised by high chromium (19–28%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels. The most used duplex stainless steels are the 2205 (22% Chromium, 5% Nickel) and the 2507 (25% Chromium, 7% Nickel); 2507 is known as “super duplex” due to its higher resistance to corrosion.

The advantage of combining ferritic and austenitic grades is that the resultant metal has a metallurgical structure that consists of two phases and therefore benefits from the properties of both microstructures.

These properties make duplex steel highly sought after in heavy industries, like oil and gas nuclear and chemical processing.

Applications of Duplex

The extensive benefits of Duplex stainless-steel mean that it can be used in many different applications such as:

Chemical processing, transport and storage

Pipes for production and transportation of oil and gas

Oil and gas exploration and offshore rigs

Oil and gas refining

Marine environments

Pollution control equipment

Pulp & paper manufacturing

Chemical process plant

Structural and mechanical components

Heat exchangers

Cooling pipes