Wrought high silicon heat resistant alloys
AssigneeRolled Alloys, Inc.
InventorGene Rundell
Life of this patent
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Abstract
A new wrought high silicon heat resistant alloy is provided having the broad composition of about 0.16 to 0.30% carbon, about 3.2 to 4.5% silicon, about 0.8 to 1.5% aluminum, about 17 to 20% chromium, about 12 to 16% nickel, up to about 2% manganese, 0 to 0.07% rare earth alloys and the balance iron with residual impurities in ordinary amounts. The alloy is a fully austenitic hot rolled and annealed chromium and nickel containing alloy having high strength and corrosion resistance.
Claims10
A fully austenitic wrought high silicon heat resistant weldable alloy in an annealed condition comprising about 0.16 to 0.30% carbon, about 3,2 to 4.5% silicon, about 0.8 to 1.5% aluminum, about 17 to 20% chromium, about 12 to 16% nickel, up to about 2% manganese, 0 to about 0.07% rare earth metals and the balance iron with residual impurities in ordinary amounts whereby after annealing a second phase of carbide is formed to prevent embrittlement.
A fully austenitic high strength weldable corrosion resistant article which has been hot rolled and annealed comprising about 0.16 to 0.30% carbon, about 3.2 to 4.5% silicon, about 0.8 to 1.5% aluminum, about 17 to 20% chromium, about 12 to 16% nickel, up to about 2% manganese, 0 to about 0.7% rare earth metals and the balance iron with residual impurities in ordinary amounts whereby after annealing a second phase of carbide is present to prevent embrittlement.
Dependencies are inferred from the claim text.