Bakin Karfe gajere ne don bakin karfe mai juriya. Ana kiransa Bakin Karfe mai rauni mai rauni ko Bakin Karfe, kamar iska, tururi da ruwa. Nau'in karfen da ke lalata matsakaicin sinadari mai lalata (acid, alkali, gishiri, da sauransu) ana kiransa karfen mai jurewa acid.
Dangane da matsayin kungiyar, ana iya raba shi zuwa karfe na martensitic, karfe na ferritic, karfe austenitic, austenite - ferrite (lokaci biyu) bakin karfe da hazo hardening bakin karfe. Bugu da kari, za a iya raba shi zuwa chromium bakin karfe, chromium nickel bakin karfe da chromium manganese nitrogen bakin karfe bisa ga abin da ya ƙunshi.
Kalmar “Bakin Karfe” ba wai kawai ana magana da ita ga bakin karfe zalla ba amma fiye da nau'ikan masana'antar bakin karfe fiye da dari. Kuma ci gaban kowane bakin karfe yana da kyakkyawan aiki a cikin takamaiman aikace-aikacen su. Don haka, mataki na farko shine gano yadda ake amfani da shi, sannan a tantance daidai nau'in karfe gwargwadon halayen kowane nau'in bakin karfe.
Saboda kyakkyawan juriya na lalata, dacewa da ƙarfi mai ƙarfi a cikin kewayon zafin jiki mai faɗi, bakin karfe shima kyakkyawan ɗanyen abu ne don masu siyar da hatimi.
