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431 babban babban chromium ne, low niklel, babban ƙarfi na Martensitic bakin karfe tare da babban ƙarfi da kyawawan ƙarfi da kuma kyawawan iko da kyawawan juriya. Idan aka kwatanta da sauran maki 400 na bakin ciki, 431 bakin karfe an tsara su ne don inganta juriya da lalata lalata da wahala da wahala, musamman a quench taurare bakin karfe. 431 zai yi rijiya a cikin yanayin marine da kuma a cikin aikace-aikacen Aerospace kamar jirgin sama masu daraja da kayan haɗi. Wannan alloy yana da matukar tasiri sosai a matakan babban aiki.

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431S31803 shine tsarin ƙididdigar lamba (mara izini) ƙira don asalin Duplex bakin karfe. Kungiyoyi masu ciniki da yawa sun kirkiro da kungiyoyin kasuwanci da yawa a cikin shekarun 1970 don rage rikicewa yayin da aka kira kowa abubuwa daban-daban, da kuma mataimakinsu. Kowane ƙarfe yana wakilta ta hanyar wasiƙu da lambobi biyar, inda harafin yake wakiltar jerin baƙin ƙarfe, I.e. S for bakin karfe.

Daga cikin dukkanin Martensitic maki na bakin karfe, 431 yana da mafi kyawun maganin lalata. Wasu sauran aikace-aikacen sun hada da: rakunan bam, ƙwallon bam, prams shaft, bawul mai tushe da jirgin sama masu farauta. Mafi girman juriya a lalata lalata lalata shine kawai tare da shekaru harshen Harshen Martensitic bakin maki. Ana samun 431 a cikin mashaya zagaye, tsiri da waya. 431 yana da cikakken ƙarfi zuwa RC44 saboda kyakkyawan ƙarfin ƙarfi, gwargwadon abun ciki na carbon da sashin sashi. Smallaramin sassan na iya zama sanyaya ruwa, yayin da manyan sassan za a iya lalata mai ƙarfi.

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