10,000-hour cyclic oxidation behavior at 815 C /1500 F/ of 33 high-temperature alloys

Thirty-three commercial high-temperature Fe-, Ni-, and Co-base alloys were oxidized in air at 815 C (1500 F) for ten 1000-hour cycles. Specific weight change versus time curves were derived and the 10,000-hour surface oxides were analyzed by X-ray diffraction. The alloys were ranked by a combination of appearance and metal loss estimates derived from gravimetric data.