Bakin Karfe - Matsayi 431 (UNS S43100)

Grade 431 bakin karafa ne martensitic, zafi-maki maki tare da kyakkyawan lalata juriya, karfin juyi, high tauri da tensile Properties. Duk waɗannan kaddarorin sun sa su dace don aikace-aikacen ƙusa da shaft. Waɗannan karafa, duk da haka, ba za su iya yin sanyi-aiki ba saboda ƙarfin yawan amfanin ƙasa, don haka sun dace da ayyuka kamar juyi, zane mai zurfi, lanƙwasa ko kan sanyi.

Ana yin ƙera ƙarfe na martensitic gabaɗaya ta amfani da dabarun da ke ba da damar taurin jiyya da rashin ƙarfi da rashin ƙarfi. Abubuwan juriya na lalata na ƙarfe 431 sun yi ƙasa da na maki austenitic. Ayyukan sa na 431 suna iyakance ta hanyar asarar ƙarfi a yanayin zafi mai yawa, saboda yawan zafin jiki, da asarar ductility a yanayin zafi mara kyau.