The market of super duplex steels is constantly growing and boosting the demand for super duplex scrap and turnings. F53 alloy, (also classified as UNS S32750 – 2507 – 1.4410 – X2CrNiMoN25.7.4.), belongs to the family of duplex or austenoferritics and it is by far the most widespread among these alloys. Just as all duplex steels, it is characterised by high resistance to corrosion and oxidation.