Babban fasali na 310 bakin karfe bututu ne: high zafin jiki juriya, kullum amfani a boilers da mota shaye bututu, da sauran kaddarorin ne talakawan.
303 bakin karfe bututu: Ta ƙara ƙaramin adadin sulfur da phosphorus, yana da sauƙin yankewa da aiwatarwa fiye da 304. Sauran kaddarorin suna kama da bututun bakin karfe 304.
302 bakin karfe bututu: 302 bakin karfe sanda ne yadu amfani a auto sassa, jirgin sama, Aerospace hardware kayan aikin, da kuma sinadaran masana'antu. Cikakkun bayanai sune kamar haka: kayan aikin hannu, bearings, tsarin zamewa, kayan aikin likitanci, kayan lantarki, da dai sauransu Halaye: 302 bakin karfe ball ne austenitic karfe, wanda yake kusa da 304, amma taurin 302 ya fi girma, HRC≤28, kuma yana da kyau tsatsa da juriya na lalata.
301 bakin karfe welded bututu: mai kyau ductility, amfani da kafa kayayyakin. Hakanan ana iya taurare shi da sauri ta hanyar sarrafa injina kuma yana da kyakkyawan walƙiya. Wear juriya da gajiya ƙarfi sun fi 304 bakin karfe bututu.
202 bakin karfe bututu: Yana da chromium-nickel-manganese austenitic bakin karfe da mafi kyau yi fiye da 201 bakin karfe.