Ikhabhoni (C): Okuqukethwe kwekhabhoni ensimbi kuyanda, iphuzu lesivuno, amandla aqinile nobulukhuni kuyakhula, kodwa izakhiwo zepulasitiki nomthelela ziyehla. Lapho okuqukethwe kwekhabhoni kudlula u-0.23%, ukusebenza kokushisela kwensimbi kuyawohloka, ngakho-ke uma isetshenziselwa ukushisela Okuqukethwe kwekhabhoni yensimbi yesakhiwo esine-alloy ephansi ngokuvamile akudluli ku-0.20%. Okuqukethwe kwekhabhoni ephezulu kuzophinde kunciphise ukumelana nokugqwala komkhathi kwensimbi, futhi insimbi enekhabhoni ephezulu egcekeni lesitoko esivulekile kulula ukugqwala; ngaphezu kwalokho, ikhabhoni ingandisa ukuqina okubandayo nokuzwela ukuguga kwensimbi.
I-silicon (Si): I-silicon yengezwa njenge-ejenti yokunciphisa kanye ne-deoxidizer enqubweni yokwenza insimbi, ngakho insimbi ebulewe iqukethe i-silicon engu-0.15-0.30%. I-silicon ingathuthukisa kakhulu umkhawulo wokunwebeka, iphuzu lokukhiqiza namandla ensimbi eqinile, ngakho-ke isetshenziswa kabanzi njengensimbi enwebekayo. Ukwenyuka kwenani le-silicon kuzonciphisa ukusebenza kwe-welding yensimbi.
I-Manganese (Mn). Enqubweni yokwenza insimbi, i-manganese iyi-deoxidizer enhle ne-desulfurizer. Ngokuvamile, insimbi iqukethe 0.30-0.50% manganese. I-Manganese ingakhuphula amandla nobulukhuni bensimbi, ikhulise ukuqina kwensimbi, ithuthukise ukusebenza okushisayo kwensimbi, futhi inciphise ukusebenza kokushisela kwensimbi.
I-Phosphorus (P): Ngokuvamile, i-phosphorus iyinto eyingozi ensimbi, ekhuphula ukubola okubandayo kwensimbi, yonakalise ukusebenza kokushisela, inciphise ubupulasitiki, futhi yonakalise ukusebenza kokugoba okubandayo. Ngakho-ke, okuqukethwe kwe-phosphorus ensimbi ngokuvamile kuyadingeka ukuba kube ngaphansi kuka-0.045%, futhi imfuneko yensimbi yekhwalithi ephezulu iphansi.
Isibabule (S): Isibabule futhi siyisici esiyingozi ngaphansi kwezimo ezijwayelekile. Yenza insimbi ishise ibe brittle, yehlise ukuduka kwensimbi nokuqina, futhi ubangele ukuqhekeka ngesikhathi sokubumba nokuginqika. Isibabule siphinde sibe yingozi ekusebenzeni kokushisela, sinciphisa ukumelana nokugqwala. Ngakho-ke, okuqukethwe kwesibabule ngokuvamile kuyadingeka ukuba kube ngaphansi kuka-0.045%, futhi imfuneko yensimbi yekhwalithi ephezulu iphansi. Ukwengeza i-0.08-0.20% sulphur ensimbi kungathuthukisa ukusebenza kahle, futhi ngokuvamile kubizwa ngokuthi insimbi yokusika mahhala.
I-Vanadium (V): Ukwengeza i-vanadium ensimbi kungacwenga izinhlamvu zesakhiwo futhi kuthuthukise amandla nokuqina.
I-Niobium (Nb): I-Niobium ingacwenga okusanhlamvu futhi ithuthukise ukusebenza kwe-welding.
Ithusi (Cu): I-Copper ingathuthukisa amandla nokuqina. Okubi ukuthi kujwayele ukuba nokushisa okushisa ngesikhathi sokusebenza okushisayo, futhi okuqukethwe kwethusi kunsimbi ye-scrap kuvame ukuba phezulu.
I-Aluminium (Al): I-Aluminium iyi-deoxidizer evame ukusetshenziswa ensimbi. Inani elincane le-aluminium lifakwa ensimbi ukuze kucwengwe okusanhlamvu futhi kuthuthukiswe ukuqina komthelela.