A286 (1.4980) Kafa, wanda aka fi sani da Alayan 660 sanduna, bakin karfe ne wanda ke ɗauke da baƙin ƙarfe, nickel da Chromium. An sanye da maƙarƙashiya a286 don ƙarfin ƙarfinsu, juriya na creep da juriya na abu daban-daban a cikin yanayin zafi, sau ɗaya shekara sun taurare. A sakamakon haka, a286 kusoshi suna samar da ƙarfi mai ƙarfi daga zazzabi mai zuwa ga kusan 1300¡yC).