304 Loaʻa i ke kila kila a me ke kila wela ke kiʻekiʻe ka maʻiʻo chromium, ka ʻili matte, ka haʻahaʻa o ka ʻōpala, ka nui o ka nickel a me ke kūpaʻa maikaʻi.ʻAʻole maʻalahi ke kila kila no ka mea hiki i ka chromium-rich oxide i hana ʻia ma ka ʻili o ke kino kila ke pale i ke kino kila.Ke makemake ʻoe i ka rivet makapō kila kila, koho ʻo Pls i 304 rivet kino a me 304 mandrel rivet.