A rayuwa ta gaske, yawancin mutane suna tunanin hakabakin karfe ba maganadisu ba ne, kuma ba kimiyya ba ne don amfani da maganadisu don gano bakin karfe.Sau da yawa mutane suna tunanin cewa maganadisu suna ɗaukar kayan bakin karfe don tabbatar da ingancinsu da amincin su.Ba su da ban sha'awa kuma marasa maganadisu.Ana la'akari da su masu kyau da gaske;idan Magnetic ne, ana tsammanin samfuran jabu ne.Wannan hanya ce ta musamman mai gefe ɗaya kuma wacce ba ta dace ba don gano kurakurai.Akwai nau'ikan baƙin ƙarfe da yawa, wanda za'a iya raba shi zuwa nau'ikan da yawa bisa ga tsarin yanayin dakin da yake

1. Nau'in Austenite kamar 304, 321, 316, 310, da dai sauransu;

2. Martensite ko nau'in ferrite kamar 430, 420, 410, da dai sauransu;Nau'in Austenitic ba maganadisu ba ne ko kuma mai rauni mai rauni, kuma martensite ko ferrite magnetic ne.Yawancin bakin karfe da aka saba amfani da su don ado bututu zanen gado ne austenitic 304, wanda shi ne kullum ba Magnetic ko weakly Magnetic.Duk da haka, saboda jujjuyawar sinadarai ko yanayi daban-daban na sarrafawa ta hanyar narkewa, magnetism na iya bayyana, amma wannan ba za a iya tunanin menene dalilin jabu ko rashin cancanta ba?Kamar yadda aka ambata a sama, austenite ba Magnetic bane ko rauni mai rauni, yayin da martensite ko ferrite shine Magnetic.Saboda rarrabuwar kawuna ko rashin kula da zafi lokacin da ake narkewa.Ƙananan adadin martensite ko ferrite a cikin austenitic 304 bakin karfe za a haifar.Naman jiki.Ta wannan hanyar, 304 bakin karfe zai sami raunin magnetic Properties.Har ila yau, bayan 304 bakin karfe yana aiki mai sanyi, za a canza tsarin zuwa martensite.Mafi girman digiri na nakasar aikin sanyi, mafi girman canji na martensite kuma mafi girman halayen magnetic na karfe.Kamar gunkin bel na karfe,ΦAna samar da bututu 76 ba tare da induction na maganadisu ba, kumaΦAna samar da bututu 9.5.Saboda nakasar lankwasawa ta fi girma, shigar da maganadisu ya fi fitowa fili, kuma nakasar bututun murabba'i rectangular ya fi girma fiye da na bututun zagaye, musamman bangaren kusurwa, nakasar ta fi tsanani kuma magnetism ya fi fitowa fili.Don kawar da kaddarorin hypnotic na karfe 304 da aka haifar da dalilan da ke sama, ana iya dawo da tsarin austenite kuma a daidaita shi ta hanyar maganin zafi mai zafi, ta hanyar kawar da kaddarorin magnetic.Musamman ma, magnetism na bakin karfe 304 da abubuwan da ke sama ke haifarwa ba daidai ba ne da sauran kayan bakin karfe, kamar 430 da carbon karfe.Wannan kawai ya ce, maganadisu na karfe 304 koyaushe yana nuna raunin maganadisu.Wannan yana nuna mana cewa idan bakin karfe yana da rauni sosai ko kuma a'a, ya kamata a tantance shi a matsayin 304 ko 316;idan ya kasance daidai da carbon karfe, yana nuna ƙarfin maganadisu, saboda an yi masa hukunci ba 304 ba. Dukansu 304 da 316 sune bakin karfe na austenitic kuma suna da lokaci-lokaci.Yana da rauni mai ƙarfi.