Alloy karfewani nau'i ne na ƙarfe da aka haɗa tare da abubuwa da yawa kamar molybdenum, manganese, nickel, chromium, vanadium, silicon, da boron.Ana ƙara waɗannan abubuwan haɗin gwiwa don ƙara ƙarfi, taurin, da juriya.Alloy karfe ne yawanci amfani da Injin CNCsassa saboda karfinsa da taurinsa.Abubuwan na'ura na yau da kullun waɗanda aka yi daga gami da ƙarfe sun haɗa dagears, shafts,sukurori, kusoshi,bawuloli, bearings, bushings, flanges, sprockets, kumafasteners.”