Bakin ƙarfe babban ƙarfe ne mai ƙarfi wanda zai iya tsayayya da lalata a cikin iska ko kafofin watsa labarai masu lalata sinadarai. Bakin karfe baya buƙatar shan magani a saman kamar platin launi, amma kuma yana iya samun abubuwan da suka dace na bakin karfe. Daga hangen nesa, bakin karfe yana dauke da chromium, wanda ke samar da fim din chromium na bakin ciki sosai a saman. Wannan fim na iya ware dabakin karfe simintin gyaran kafadaga kutsawa oxygen, don haka samar da juriya na lalata. Domin kiyaye juriyar lalata bakin karfe, gabaɗaya magana, bakin karfe dole ne ya ƙunshi fiye da 12% chromium.
347 bakin karfe shine daraja a cikin ma'aunin ASTM A240/240M. Bakin karfe ne na austenitic. A kasar Sin, daidai da sa na 347 bakin karfe ne 0Cr18Ni11Nb. Domin ya ƙunshi wani adadin niobium (Nb) element, 347 bakin karfe yana da kyakkyawan juriya ga lalatawar crystallographic, kuma yana da ɗan ƙaramin ƙarfi da filastik. 347 bakin karfe yana da kyakkyawan juriya da iskar shaka da weldability a cikin iska a ƙasa da 800 ° C.
347 bakin karfe yana da kyakkyawan juriya na lalata a cikin kafofin watsa labaru kamar acid, alkalis, da mafita na gishiri. Haɓaka haɓakar yanayin zafi mai zafi da yanayin zafi mai zafi juriya juriya na injuna na 347 bakin karfe sun fi na304 bakin karfe. Hakanan filayen aikace-aikacen sa suna da faɗi sosai, kamar jirgin sama, samar da wutar lantarki, sunadarai, masana'antar petrochemical, abinci, yin takarda,yawan shaye-shaye, da dai sauransu.
Abubuwan sinadaran 347 bakin karfe kamar haka:
Carbon C: ≤0.08%
Silicon Si: ≤1.00%
Manganese Mn: ≤2.00%
Phosphorus P: ≤0.045%
Sulfur S: ≤0.030%
Chromium Cr: 17.00 ~ 19.00
Nickel Ni: 9.00 ~ 12.00
Niobium Nb: ≥10*C %
The inji Properties na 347 bakin karfe (m bayani jihar) ne kamar haka:
Ƙarfin haɓaka (N/mm2) ≥205
Ƙarfin ɗamara (N/mm2) ≥515
Tsawaita (%) ≥ 40
Taurin: HB: ≤187
Lokacin aikawa: Dec-09-2023