Bakin karfe farantin surface santsi, high plasticity, tauri da inji ƙarfi, acid, alkaline gas, bayani da sauran kafofin watsa labarai lalata.Karfe ne mai juriya ga tsatsa, amma ba shi da cikakkiyar juriya ga tsatsa.Bakin karfe farantin karfe yana nufin yanayin yanayi, tururi da ruwa da sauran rauni matsakaicin lalata na farantin karfe, kuma farantin karfe mai juriya na acid yana nufin acid, alkali, gishiri da sauran lalatawar sinadarai matsakaicin lalata na farantin karfe.