Intsimbi engatyiwayo liqela lealloys eneferrous equlathe ubuncinci obumalunga ne 11% yechromium, ukwakheka okunqanda i-iron ekurusini kwaye ikwabonelela ngeempawu ezikwaziyo ukumelana nobushushu.Iindidi ezahlukeneyo zensimbi engenasici ziquka izinto zekhabhoni (ukusuka kwi-0.03% ukuya kwi-1.00%), i-nitrogen, i-aluminium, i-silicon, isulfure, i-titanium, i-nickel, ithusi, i-selenium, i-niobium, kunye ne-molybdenum.Iindidi ezithile zensimbi engenasici zidla ngokutyunjwa ngenombolo ye-AISI enamanani amathathu, umzekelo, i-304 engenasici.