Bakin karfe farantin gaba ɗaya kalma ce ta bakin karfe da farantin karfe mai jure acid.Bakin karfe farantin yana da m surface, high plasticity, tauri da kuma inji ƙarfi, kuma yana da resistant zuwa lalata ta acid, alkaline gas, mafita da sauran kafofin watsa labarai.Karfe ne na gami wanda ba shi da sauƙin tsatsa, amma ba shi da cikakkiyar tsatsa.Bakin karfe yana nufin farantin karfe mai jure lalata ta hanyar watsa labarai masu rauni kamar yanayi, tururi da ruwa, yayin da farantin karfe mai jure rashin acid yana nufin farantin karfe mai jure lalata ta hanyar sinadarai masu lalata kamar acid, alkali da gishiri.Bakin karfe farantin karfe yana da tarihin sama da karni tun da ya fito a farkon karni na 20.
