Iron-bearing nickel-chromium-aluminum-yttrium alloy

Details Iron-bearing nickel-chromium-aluminum-yttrium alloy Iron-bearing nickel-chromium-aluminum-yttrium alloy

C - Chemistry, Metallurgy

22

C

75/107

C22C 19/05 (2006.01)

Patent

CA 1215254

ABSTRACT OF THE DISCLOSURE A high temperature oxidation resistant alloy. The alloy consists essentially of, by weight, from 14 to 18% chromium, from 4 to 6% aluminum, from 1.5 to 8% iron, a small but effective yttrium content not exceeding 0.04%, up to 12% cobalt, up to 1% manganese, up to 1% molybdenum, up to 1% silicon, up to 0.25% carbon, up to 0.03% boron, up to 1% tungsten, up to 1% tantalum, up to 0.5% titanium, up to 0.5% hafnium, up to 0.5% rhenium, up to 0.04% of elements from the group consisting of elements 57 through 71 of the periodic table of the elements, balance essentially nickel. The nickel plus the cobalt content is at least 66%. The iron content is in accordance with the relationship, Fe 3 + 4 (%Al -5), when the aluminum content is at least 5%.

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