alloy
al·loy
/ˈæˌloı/ noun , pl -loys
: a metal made by melting and mixing two or more metals or a metal and another material together
[ count ] testing the properties of various alloys
[ noncount ] a part made of aluminum alloy
al·loy /əˈloı/ verb , -loys, -loyed, -loy·ing [ + obj ]
Stainless steel is made by alloying steel with chromium.