Ho na le likete tsa li-iel tsa allow steel tsa allow le li-steel le tse mashome a tšeletseng a litlhaloso tse sebelisoang lefatšeng ka bophara. Tlhahiso ea li-account tsa alloy Steel bakeng sa ka 10% ea tlhahiso ea tšepe. Ke lintho tsa bohlokoa tsa lebello tse sebelisoang haholo kahong ea naha ea moruo le ts'ireletso ea naha.
Ho tloha ka 1970, nts'etsopele ea alloyli-steel tse matla tse phahamengLefatšeng ka bophara ho se ke ka kena mehleng e ncha. Ho ipapisitsoe le Theknoloji e laoloang le minilinglory ea metallirgy, mahlaseli a sejoale-joale a nang le matla a mangata a nang le matla a mangata, a bolokiloeng hantle, mohopolo o ngotsoeng ka letsoho.
Ka bo-1980, nts'etsopele ea mefuta e fapaneng e kenyelletsang likarolo tse fapaneng tsa liindasteri le karolo ea lisebelisoa tse khethehileng li fihlile tlhōrōng ea "metjeko ea metalterig" ea tšepe, boemo bo hlahelletseng ba sebopeho sa tšepe le sebopeho se nepahetseng se totobatsoa ka lekhetlo la pele. E boetse e bontša hore lipatlisiso tsa mantlha tsa tšepe tse tlase li fetohile tsebong ebile e sentsoe. Mohopolo o mocha oaMoqapi oa alloy.