Ferritic-austenitic steel

was developed in search of steel properties that have the characteristics of these two types of stainless steel, ferritic steel, i.e. good mechanical properties, and austenitic steel, i.e. high corrosion resistance. It is called DUPLEX steel because it combines the properties of two types of steel. With high resistance to intercrystalline, stress, corrosion and pitting corrosion, it exhibits very good strength properties, as well as abrasion and erosion resistance. It is increasingly used in the petrochemical, mining, shipbuilding and aerospace industries. Bolts, valves, pump shafts, agitators, etc. are made from this type of steel.

Ferritic-austenitic DUPLEX and SUPER DUPLEX steels