Nickel-chromium-cobalt containing alloys
AssigneeThe International Nickel Company, Inc.
InventorRonald Mason Haeberle, Jr.
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Abstract
High-chromium nickel alloys containing special amounts of cobalt and other ingredients are found to afford a good combination of both hot and cold workability, together with corrosion resistance, stability and high temperature stress rupture characteristics.
Claims8
A high chromium, nickel-cobalt alloy characterized by good (i) hot and cold workability notwithstanding the chromium levels, (ii) stress-rupture strength at high temperatures, (iii) hot corrosion resistance to the combustion products of low-grade fuels, and (iv) stability at elevated temperature, said alloy consisting essentially of from 35 to about 45% chromium, about 42.5 to 55% nickel, from 2.5 to about 20% cobalt, the percentages of chromium, nickel and cobalt being correlated to represent a point on the area JHDEGJ of the accompanying drawing, titanium in a small but effective amount to improve workability or tie up nitrogen and up to about 1.5%, carbon in an amount up to about 0.1%, and up to about 0.75% aluminum.
An alloy consisting essentially of 35 to 47.5% chromium, about 42.5% to 55% nickel, about 2.5 to 21% cobalt, titanium present to improve workability or tie up nitrogen up to 1.5%, up to 0.25% carbon, and up to 2% aluminum, the chromium, nickel and cobalt being correlated to represent a point within the area ACDEGA of the accompanying drawing.
Dependencies are inferred from the claim text.