Alloy tool steel ke mofuta oa tšepe o eketsang chromium, molybdenum, tungsten, vanadium le lisebelisoa tse ling tsa alloy ho tšepe ea sesebelisoa sa carbon ho ntlafatsa ho thatafala, ho tiea, ho hanyetsa le ho hanyetsa mocheso. E sebelisoa haholo-holo ho etsa lisebelisoa tsa ho lekanya, lisebelisoa tsa ho itšeha, lisebelisoa tse thibelang tšusumetso, hlobo e batang le e chesang, le lisebelisoa tse ling tse khethehileng.