alloy steel
noun
carbon steel to which various elements, as chromium, cobalt, copper, manganese, molybdenum, nickel, tungsten, or vanadium, have been added in sufficient amounts to obtain desirable physical and chemical properties.
Origin of alloy steel
First recorded in 1900–05
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019