Jirgin ruwa mai mahimmanciDa yawa ya ƙunshi murfin ƙarfe mai tamani, kayan insulating kayan aiki, kayan amfani da waya.

Halayen kayan masarufi masu kishin ƙarfe na ƙarfe za'a iya taƙaita su kamar haka:

(1) juriya juriya

(2) ingantaccen kwanciyar hankali na yuwuwar thereral, amfani na dogon lokaci na daskararren ƙarfin zafin jiki yana da ƙarami;

(3) Matsakaicin iyakar yawan zafin jiki yana da yawa;

(4) Arfored Thermocococle karshen an rufe shi, babu gasasshen gas a ciki

(5) Jarurayya mai zurfi, Archored Karfe Armorle a dakin zazzabi zai iya kai sama da 50mω;

(6) Bayanin samfurin samfuri, ana iya sarrafa kayan ƙimar kariya bisa ga bukatun mai amfani

(7) Mai sauƙin lanƙwasa, sassauya mai kyau, shigarwa mai sauƙi

(8) resistant zuwa matsin lamba da rawar jiki;

(9) Har yanzu lokacin amsar da yake da kai; dogon rayuwa