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Noun: gamma iron  'ga-mu'I(-u)rn
  1. A nonmagnetic allotrope of iron that is the basis of austenite; stable between 906 and 1403 degrees centigrade
    "Gamma iron is important in the heat treatment of steel"

Derived forms: gamma irons

Type of: atomic number 26, Fe, iron

Part of: austenite

Encyclopedia: Gamma iron