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US 3,933,484 AGranted
Cobalt-base alloy
AssigneeOwens-Corning Fiberglas Corporation
InventorDarryl J. Costin
Life of this patent
Estimating the term…
Abstract
A cobalt-base alloy, particularly suitable for high temperature molten glass environments, and articles manufactured from the alloy, preferably by casting, are disclosed.
Claims10
A composition of matter consisting essentially of the following elements in amounts expressed in weight percent:
- Chromium -- from about 25 to about 36
- Nickel -- from about 3.5 to about 13
- Wolfram -- from about 3 to about 10.5
- Tantalum -- from about 1.4 to about 6.5
- Zirconium -- from about 0.005 to about 0.02
- Silicon -- from about 0.05 to about 2
- Carbon -- from about 0.35 to about 0.95
- Boron -- from about 0.001 to about 0.1
- Iron -- from about 0.01 to about 12
- Cobalt -- Balance
- the weight ratio of wolfram to tantalum being within the range of from about 1 to about 5.5 and the weight ratio of zirconium to boron being within the range of from about 0.05 to about 35.
8 more elements
Dependencies are inferred from the claim text.