What are Duplex Steel Round Bars?

As the name suggests, Duplex Steel Round Bars are made up of stainless steel round bars enriched with molybdenum and chromium. This combination provides excellent corrosion resistance and stress cracking resistance. This alloy is also exceptionally tough and strong under high temperatures. The Super Duplex Round Bar is designed to offer better corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, while also providing a higher degree of strength than standard austenitic stainless steels like Type 304 or 316. In the case of a 22%Cr duplex stainless steel round bar, the minimum strength is 0.2%, which is about 450N/mm2, while a super duplex steel bar has a minimum strength of 550N/mm2. There are three main groups of duplex steel round bars; they include lean duplex round bars, duplex steel hex bars with 22% Cr, super duplex round bars with 25% Cr, and even higher alloyed, hyper duplex grades that have been developed. This division is primarily ...