Official Answer
Answer
A286 (ASTM A638) wani babban ƙarfe ne na ƙarfe wanda ke da ƙarfi da juriya da iskar shaka har zuwa $700^∘C$. Don riƙe zobba a cikin injin turbines, ya fi na bakin karfe saboda baya rasa 'ɗaukar zafi' a yanayin yanayin aiki. Kayan yana da hazo-taurara don cimma ƙarfin yawan amfanin ƙasa na kusan 700-1000 MPa. Matsakaicin haɓakar haɓakar yanayin zafi shima yana dacewa da yawa na tushen turbine na nickel, wanda ke rage haɗarin zoben ya rasa rikonsa saboda bambancin haɓakar zafi. Sarrafa ya ƙunshi maganin maganin a $980^∘C$ sannan kuma tsufa a $720^∘C$ na tsawon awanni 16 don haɓaka matakin $\gamma'$.
