Manufacturers of centrifugal separators and decanters want to maximize the separation efficiency of their machines, so the fabrication materials of critical components, such as the rotation cylinder or the conveyor hub have to exhibit very high tensile strength and corrosive resistance, but at the same time remain cost effective. Not an easy goal to achieve. However, Dr Frank Wischnowskii & Dipl.-Ing. Andre Kuhn of Klaus Kuhn Edelstahlgiesserei GmbH, Germany, believe their duplex centrifugal cast stainless steel grades may well be the answer.