Bakin karfe 15-5 PH shine hazo mai taurin bakin karfe tare da kusan 15% Chromium da 5% nickel. Yana da babban ƙarfi, babban taurin, da kyakkyawan juriya na lalata. Ana iya ƙara ƙarfin ƙarfi ta hanyar jiyya mara ƙarancin zafin jiki guda ɗaya. Idan aka kwatanta da 17-4 PH, yana ba da mafi kyawun taurin kai da ductility; ingantattun kaddarorin inji a cikin manyan sassan giciye, kuma mafi kyawun ƙirƙira. Yana da sauƙin waldawa. Ana iya sarrafa shi a cikin kowane yanayi na thermal da yawa da ake samu zuwa wannan matakin.