|1.||a solid solution of carbon in face-centred-cubic gamma iron, usually existing above 723°C|
|2.||the gamma phase of iron, stabilized at low temperatures by the addition of such elements as nickel|
|[C20: named after Sir William C. Roberts-Austen (1843--1902), English metallurgist]|
solid solution of carbon and other constituents in a particular form of iron known as gamma (gamma) iron. This is a face-centred cubic structure formed when iron is heated above 910 C (1,670 F); gamma iron becomes unstable at temperatures above 1,390 C (2,530 F). Austenite is an ingredient of a kind of stainless steel used for making cutlery, hospital and food-service equipment, and tableware.
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