Kabhoni (C): Kabhoni yemukati musimbi inowedzera, goho poindi, kusimba kwesimba uye kuoma kunowedzera, asi plastiki uye hunhu hwekuita hunodzikira.Kana iyo kabhoni yemukati ichipfuura 0.23%, iyo welding yesimbi inodzikira, saka kana ikashandiswa kushinha Iyo kabhoni yemukati yepasi-alloy structural simbi kazhinji haipfuure 0.20%.Yakakwira kabhoni yemukati inoderedzawo kushomeka kwemuchadenga kwesimbi, uye simbi yakakwira-kabhoni muyadhi yakashama iri nyore kuita ngura;uyezve, kabhoni inogona kuwedzera kutonhora brittleness uye kuchembera kunzwa kwesimbi.
Silicon (Si): Silicon inowedzerwa sechinhu chinoderedza uye deoxidizer mukugadzirwa kwesimbi, saka simbi yakaurayiwa ine 0.15-0.30% silicon.Silicon inogona kuvandudza zvakanyanya muganho elastic, goho poindi uye tensile simba resimbi, saka inoshandiswa zvakanyanya sesimbi elastic.Kuwedzera kwehuwandu hwesilicon kunoderedza kushanda kwesimbi.
Manganese (Mn).Mukugadzira simbi, manganese yakanaka deoxidizer uye desulfurizer.Kazhinji, simbi ine 0.30-0.50% manganese.Manganese inogona kuwedzera kusimba uye kuoma kwesimbi, kuwedzera kuoma kwesimbi, kunatsiridza kupisa kushanda kwesimbi, uye kuderedza kushanda kwesimbi.
Phosphorus (P): Kazhinji, phosphorous chinhu chinokuvadza musimbi, iyo inowedzera kutonhora brittleness yesimbi, inokanganisa welding performance, inoderedza plasticity, uye inokanganisa kutonhora kwekukotama kuita.Naizvozvo, iyo phosphorus yemukati musimbi inowanzodikanwa kuti ive isingasviki 0.045%, uye chinodiwa chemhando yepamusoro simbi yakaderera.
Sarufa (S): Sulfur zvakare chinhu chinokuvadza mumamiriro ezvinhu akajairika.Gadzira simbi inopisa brittle, kuderedza simbi ductility uye kuoma, uye kukonzera makatsemuka panguva yekugadzira nekukunguruka.Sulfur zvakare inokuvadza kune welding performance, inoderedza corrosion resistance.Naizvozvo, iyo sulfur yemukati inowanzodiwa kuti ive isingasviki 0.045%, uye chinodiwa chemhando yepamusoro simbi yakaderera.Kuwedzera 0.08-0.20% sulfur kune simbi inogona kuvandudza machinability, uye inowanzonzi simbi yemahara.
Vanadium (V): Kuwedzera vanadium kune simbi kunogona kunatsa chimiro zviyo uye kugadzirisa kusimba uye kuoma.
Niobium (Nb): Niobium inogona kunatsa zviyo uye kunatsiridza welding kuita.
Mhangura (Cu): Mhangura inogona kuvandudza simba uye kuoma.Izvo zvisingabatsiri ndezvokuti zvinowanzoita brittleness inopisa panguva yekushanda kunopisa, uye mhangura yemhangura musimbi yakarasika inowanzokwirira.
Aluminium (Al): Aluminium inowanzoshandiswa deoxidizer musimbi.Chidimbu chidiki chealuminium chinowedzerwa kune simbi yekunatsa zviyo uye kunatsiridza kusimba kwekukanganisa.