Duplex Stainless Steels
Duplex stainless steels have a ferritic-austenitic microstructure, in roughly equal proportions 50% ferrite and 50% austenite. Duplex combines many of the attractive properties of ferritic and austenitic stainless steels into one.
Different variants for Duplex
Duplex stainless steels are designed to provide better corrosion resistance, in particular to stress corrosion and pitting corrosion. The microstructure leads to higher strength than standard austenitic stainless steels such as Type 304 or 316. Duplex stainless steels have become more and more popular in recent years. There are several variants available, such as Duplex 2205, Superduplex 2507 or lean duplex with lower nickel content.
Slovenian steelmaker Acroni has commissioned a new 2.6-m X-Roll heavy-plate mill stand from SMS Innse, Italy, and a new roller-type quench supplied by Drever International, Belgium, two subsidiaries of SMS Siemag as part of modernising its heavy-plate mill.
Acroni, a company of the Slovenian Steel Group (SIJ), is a highly specialised niche supplier with a focus on plates and strips of stainless steel grades, tool steels, abrasion-resistant steels and HSLA grades.