Austenite, also known as gamma-phase iron (γ-Fe), is a metallic, non-magnetic allotrope of iron or a solid solution of iron, with an alloying element.[1] In plain-carbon steel, austenite exists above the critical eutectoid temperature of 1000 K (727 °C); other alloys of steel have different eutectoid temperatures. The austenite allotrope is named after Sir William Chandler Roberts-Austen (1843–1902);[2] it exists at room temperature in some stainless steels due to the presence of nickel stabilizing the austenite at lower temperatures.
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https://en.wikipedia.org/wiki/Austenite
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