1. Carbon (C): Da ƙaruwar sinadarin carbon a cikin ƙarfe, ƙarfin amfani da ƙarfin tururi yana ƙaruwa, amma ƙarfin tururi da ƙarfin tasiri suna raguwa; Duk da haka, lokacin da sinadarin carbon ya wuce 0.23%, ƙarfin walda na ƙarfe yana raguwa. Saboda haka, yawan sinadarin carbon a cikin ƙarfe mai ƙarancin ƙarfe da ake amfani da shi don walda gabaɗaya bai wuce 0.20%. Ƙara yawan sinadarin carbon zai kuma rage juriyar tsatsa na ƙarfe, kuma yawan sinadarin carbon a cikin ƙarfe yana da sauƙin gurɓatawa a sararin samaniya. Bugu da ƙari, carbon na iya ƙara ƙarfin sanyi da tsufa na ƙarfe.

2. Silicon (Si): Silicon yana da ƙarfi wajen cire sinadarin oxidative a cikin aikin ƙera ƙarfe, kuma yawan sinadarin silicon a cikin ƙarfe da aka kashe gabaɗaya shine 0.12%-0.37%. Idan sinadarin silicon a cikin ƙarfe ya wuce 0.50%, ana kiran silicon da sinadarin alloying. Silicon na iya inganta iyakar roba sosai, ƙarfin samar da ƙarfe da ƙarfin tururi, kuma ana amfani da shi sosai a matsayin ƙarfe na bazara. Ƙara sinadarin silicon 1.0-1.2% a cikin ƙarfen da aka kashe da aka daidaita zai iya ƙara ƙarfi da 15-20%. Idan aka haɗa shi da silicon, molybdenum, tungsten da chromium, zai iya inganta juriyar tsatsa da juriyar oxidation, kuma ana iya amfani da shi don ƙera ƙarfe mai jure zafi. Ana amfani da ƙaramin ƙarfe mai carbon wanda ke ɗauke da silicon 1.0-4.0%, tare da ƙarfin maganadisu mai yawa, a matsayin ƙarfe na lantarki a masana'antar lantarki. Ƙara yawan sinadarin silicon zai rage ƙarfin walda na ƙarfe.

3. Manganese (Mn): Manganese yana da kyau wajen cire sinadarin oxidative da kuma cire sinadarin sulfurizer. Gabaɗaya, ƙarfe yana ɗauke da kashi 0.30-0.50% na manganese. Idan aka ƙara manganese fiye da kashi 0.70% a cikin ƙarfen carbon, ana kiransa "ƙarfe na manganese". Idan aka kwatanta da ƙarfe na yau da kullun, ba wai kawai yana da isasshen ƙarfi ba, har ma yana da ƙarfi da tauri mafi girma, wanda ke inganta ƙarfin tauri da ƙarfin aiki mai zafi na ƙarfe. Karfe mai ɗauke da kashi 11-14% na manganese yana da juriya sosai ga lalacewa, kuma galibi ana amfani da shi a cikin bokitin haƙa ƙasa, layin injin niƙa ƙwallo, da sauransu. Tare da ƙaruwar sinadarin manganese, juriyar tsatsa na ƙarfe yana raguwa kuma aikin walda yana raguwa.

4. Phosphorus (P): Gabaɗaya, phosphorus sinadari ne mai cutarwa a cikin ƙarfe, wanda ke inganta ƙarfin ƙarfe, amma yana rage ƙarfin ƙarfe da tauri, yana ƙara karyewar ƙarfe da sanyi, kuma yana lalata aikin walda da aikin lanƙwasa sanyi. Saboda haka, yawanci ana buƙatar cewa yawan phosphorus a cikin ƙarfe bai wuce 0.045% ba, kuma buƙatar ƙarfe mai inganci ya yi ƙasa.

5. Sulfur (S): Sulfur kuma abu ne mai cutarwa a yanayi na yau da kullun. Sanya ƙarfen ya yi zafi, yana rage juriya da tauri na ƙarfe, kuma yana haifar da tsagewa yayin ƙirƙira da birgima. Sulfur kuma yana da illa ga aikin walda kuma yana rage juriya ga tsatsa. Saboda haka, yawan sinadarin sulfur yawanci ƙasa da 0.055%, kuma na ƙarfe mai inganci ƙasa da 0.040%. Ƙara 0.08-0.20% sulfur ga ƙarfe na iya inganta rashin iyawar injin, wanda galibi ana kiransa ƙarfe mai yankewa kyauta.

6. Aluminum (Al): Aluminum wani abu ne da ake amfani da shi wajen cire sinadarin oxidative a cikin ƙarfe. Ƙara ƙaramin adadin aluminum a cikin ƙarfe na iya ƙara girman hatsi da inganta ƙarfin tasiri; Aluminum kuma yana da juriya ga iskar shaka da juriya ga tsatsa. Haɗin aluminum da chromium da silicon na iya inganta aikin barewa mai zafi da juriya ga tsatsa mai zafi na ƙarfe. Rashin kyawun aluminum shine yana shafar aikin zafi, aikin walda da aikin yanke ƙarfe.

7. Iskar Oxygen (O) da nitrogen (N): Iskar Oxygen da nitrogen abubuwa ne masu cutarwa waɗanda za su iya shiga daga iskar gas ɗin tanderu lokacin da ƙarfen ya narke. Iskar Oxygen na iya sa ƙarfe ya yi zafi ya yi rauni, kuma tasirinsa ya fi na sulfur tsanani. Iskar Oxygen na iya sa ƙarfe ya yi sanyi ya yi kama da na phosphorus. Tasirin tsufa na nitrogen na iya ƙara tauri da ƙarfin ƙarfe, amma yana rage juriya da tauri, musamman idan aka yi la'akari da tsufa.

8. Niobium (Nb), vanadium (V) da titanium (Ti): Niobium, vanadium da titanium duk abubuwa ne masu tace hatsi. Ƙara waɗannan abubuwan yadda ya kamata zai iya inganta tsarin ƙarfe, tsaftace hatsin da kuma inganta ƙarfi da tauri na ƙarfe sosai.