Duplex Steel Bars are composed of a variety of elements which give them superior features compared to other pieces of metal. The alloy is made up primarily of two phases: austenite and ferrite. It also typically includes chromium, nickel, molybdenum and nitrogen. This unique combination of components makes Duplex Steel Bars highly resistant to chloride stress corrosion cracking. This issue is often seen in regular stainless steel when exposed to certain environmental conditions. The bars show excellent weldability and a combination of high strength and ductility, making them suitable for many different applications. These properties make Duplex Steel Bars the perfect choice for projects requiring superior corrosion and fatigue protection.
Duplex steel bars are becoming an increasingly popular choice for various applications due to their high strength, excellent corrosion resistance and cost-effectiveness. The combination of ferrite and austenite in the microstructure makes Duplex steels highly resistant to stress corrosion cracking, localised corrosion attacks such as pitting and crevice corrosion, erosion-corrosion, and fatigue performance is superior to other stainless steels. This combination makes it suitable for use in marine environments, acidic attractions, and various pressure vessel applications. In addition, its good weldability by most conventional welding techniques makes it ideal for manufacturing processes requiring high mechanical strength with low roughness factors.
The HSN code for duplex steel bars is 72283020.
Duplex steel bars must be welded with consumable electrodes made from the same material as the bars. It is important to select the appropriate welding process and shielding gas depending on the application and follow proper preheating and inter-pass temperatures.
No, duplex steel bars are not magnetic because they contain austenite which is non-magnetic. This makes them ideal for applications where magnetism needs to be avoided, such as in industrial equipment sensors or medical machines.