Carbon karfe shine gami da carbon da ƙarfe, tare da abun ciki na carbon har zuwa 2.1% ta nauyi.Ƙaruwar kashi na carbon zai ɗaga taurin karfe da ƙarfinsa, amma zai zama ƙasa da ductile.Carbon karfe yana da kyawawan kaddarorin a cikin taurin da ƙarfi, kuma ba shi da tsada fiye da sauran karafa.
Carbon sanyi birgima karfe coils da tube da aka samar da wani sosai daidaita masana'antu tsari, wanda ake amfani da yawa a mota, wanki, firiji, lantarki kayan da kuma karfe ofishin kayan aiki.Ta hanyar bambanta kashi a cikin ƙarfe na carbon, yana yiwuwa a samar da karfe tare da halaye iri-iri.Gabaɗaya, mafi girman abun ciki na carbon a cikin ƙarfe yana sa ƙarfe ya fi ƙarfi, gaggautsa da ƙarancin ductile.