Duplex and Super Duplex Stainless Steel and Their Welding
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Abstract
Materials and weldments used in severe environments, specially involving chloride containing aequeous fluids, require improved corrosion resistance properties and/or higher strength properties compared to stainless steel grades, say AISI 316L. To meet this need a stainless steel grade with two phases was commercially first introduced in 1970s which had high ferrite (30-70%) and austenite.
