austemper

transitive verb
aus·​tem·​per | \ȯs‧ˈtempə(r)\
-ed/-ing/-s

Definition of austemper 

: to quench (steel) from above the transformation temperature in a bath between 350° and 600° F and hold it there until transformation of austenite stops, for rendering it hard and tough

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History and Etymology for austemper

austenite + temper

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