air-hardening

[air-hahr-dn-ing]

adjective Metallurgy.

noting any metal, especially alloy steel, that can be hardened from above its transformation point by cooling in air.

Origin of air-hardening

First recorded in 1905–10

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for air hardening

air hardening

noun

a process of hardening high-alloy steels by heating and cooling in a current of airCompare oil hardening

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