Idan aka kwatanta da austenitic bakin karfe bututu, duplex bakin karfe bututu ta shortcomings ne kamar haka:
1) da duniya na aikace-aikace da Multi-faceted kamar austenitic bakin karfe, misali, da amfani da zafin jiki dole ne a sarrafa a 250 digiri Celsius.
2) Ƙarfinta na filastik fiye da austenitic bakin karfe low, sanyi, fasahar sarrafa zafi da samar da aikin kamar bakin karfe austenitic.
3) kasancewar matsakaicin zafin jiki gaggautsa, da bukatar tsananin kula da zafi magani da walda tsarin tsarin don kauce wa bayyanar cutarwa lokaci, lalacewa yi.