(1843-1902). Allotrope of iron Above 912°C and up to 1394°C alpha iron undergoes a phase transition from body-centred cubic to the face-centred cubic configuration of gamma iron, also called austenite. This is similarly soft and ductile but can dissolve considerably more carbon (as much as 2.04% by mass at 1146°C). This gamma form of iron is exhibited by the most commonly used type of stainless steel for making hospital and food-service equipment. Austenitization Austenitization… (More on Austenite)