How super-duplex materials assure high reliability in urea plants

Are you aware about the urea industry’s state-of-the-art construction materials? Nowadays all leading licensors use high-end ferritic-austenitic steels, so-called superduplex or hyperduplex stainless steels, in the urea synthesis section as their material class of choice. This presentation will explain why duplex steels are superior to the previously used austenitic stainless steels and how the corrosion properties of these steels are measured. Especially the correlation of traditional and still commonly used immersion test methods and state-of-the-art electrochemical methods as the Double-Loop – EPR test and their promising applications shall be explained.