Hot birgima karfe ne zuwa kashi tsarin karfe, m karfe da welded kwalban karfe.Sa'an nan kuma, bisa ga nau'i-nau'i daban-daban, nemo karfen da kuke buƙata, kuma ku duba yawa da abun da ke cikin takamaiman karfe.Hot birgima karfe farantin yana da low taurin, sauki aiki da kuma mai kyau ductility.Cold birgima farantin taurin ne high, aiki ne in mun gwada da wuya, amma ba sauki nakasawa, high ƙarfi.Hot birgima karfe faranti suna da in mun gwada da low ƙarfi da matalauta surface quality (low hadawan abu da iskar shaka gama), amma mai kyau plasticity.Gabaɗaya don matsakaicin kauri farantin, sanyi birgima, babban ƙarfi, high taurin, high surface gama, gaba ɗaya ga bakin ciki farantin, za a iya amfani da matsayin naushi farantin.Tsarin samar da farantin karfe mai zafi ya bambanta da na farantin karfe mai sanyi.Hot birgima karfe farantin ne high zazzabi mirgina, sanyi birgima karfe farantin ne dakin zafin jiki soya