Heat resistant alloys
AssigneeCarondelet Foundry Company
InventorJohn H. Culling
Life of this patent
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Abstract
Air-meltable, air-castable, weldable, heat resistant alloys that exhibit high creep rupture strengths and high ductilities. An H-type base alloy or a high silicon base alloy contains additions of about 0.6% to 2.5% copper and 0.55% to 2.65% microalloying amounts of the group 0.2% to 0.85% tungsten, 0.2% to 0.85% molybdenum, 0.1% to 0.5% columbium and 0.05% to 0.45% titanium.
Claims10
An alloy consisting of a base alloy, about 0.6% to about 2.5% copper and about 0.55% to about 2.65% of a microalloying group of elements, said base alloy being selected from the group consisting of H-type alloys and high silicon alloys, said alloys having the following compositions by weight:
- ______________________________________ Base Alloy H-Type High Silicon ______________________________________ Nickel 8% to 62% 10.5 to 28% Chromium 12% to 32% 14.8 to 23% Silicon up to 2.5% 3% to 6.6% Manganese up to 3% 0.2% to 4% Aluminum less than 0.5% up to 4% Carbon 0.12 to 0.6% 0.12% to 0.5% Cobalt up to 1.5% up to 1.5% Iron Essentially balance Essentially balance ______________________________________
- and said microalloying group of elements consisting essentially of, by weight:
- ______________________________________ Tungsten 0.2% to 0.85% Molybdenum 0.2% to 0.85% Columbium 0.1% to 0.5% Titanium 0.05 to 0.45% ______________________________________
Dependencies are inferred from the claim text.