Marka la dooranayo gariiradaha birta-dahaarka leh ee midabka leh, 304 birta aan dahaarka lahayn ayaa laga door bidaa 201 birta ah sababahan soo socda dartood: Farqiga udhaxeeya: 5% nikkel, oo ay la socdaan heerarka sare ee manganese. Iska-caabbinta Daxalka: Sababtoo ah chromium-ka sare iyo maadada nikkel-ka, 304 birta aan-ka-baxa waxay samaysaa filim difaac cufan oo chromium oxide ah marka hawada la soo gaadho; Tani waxay si wax ku ool ah uga hortagtaa ogsijiinta inay gasho gudaha birta, si loo hubiyo iska caabbinta daxalka oo aad u fiican. Waxay u adkaysataa weerarka aysiidhka, alkaliska, iyo milixdu badidood, wayna xasiloon tahay oo adkaysi u leh miridhku xataa meelaha badda ee qoyan ama goobaha warshadaha oo ay ku jiraan warbaahintu daxalaysa. Taas bedelkeeda, halka 201 birta aan-ka-soo-baxa lahayn ay leedahay xoogaa iska caabin ah asiidhyada iyo alkaliska, guud ahaan caabbinta daxalka ayaa si aad ah uga hoosaysa tan 304 birta-daxalka ah, taas oo ka dhigaysa mid guud ahaan ku habboon oo keliya deegaanno khafiif ah oo wasakhaysan ama warbaahinta oxidizing. Waxqabadka Hagaajinta: 304 birta aan fiicnayn waxay muujinaysaa u janjeera hoose ee adkeynta shaqada, taasoo sahlaysa in lagu socodsiiyo habab shaqo kuleyl ah sida foorno, duubid, daloolin kulul, iyo soosaarid. Waxa kale oo ay bixisaa alxanka aad u fiican, taas oo keentay in ay leeyihiin awood sare, si fiican u xidhxidhan kala goysyada u adkaysta dildilaaca iyo porosity.