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US 5,667,600 AGranted
Aluminum alloys containing beryllium and investment casting of such alloys
AssigneeBrush Wellman Inc.
InventorsFritz C. Grensing, James M. Marder, Jere H. Brophy
Life of this patent
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Abstract
Disclosed is a practical aluminum-based alloy containing 1 to 99 weight percent beryllium and improved methods for the investment casting of net shape aluminum-beryllium alloy parts.
Claims3
An investment cast net shape article made of an aluminum alloy consisting essentially of:
- about 25 to about 70 weight percent aluminum,
- about 30 to about 75 weight percent beryllium, up to about 5 weight percent silicon and silver,
- about 0.25 to about 5 weight percent of an element selected from the group consisting of copper, cobalt and nickel, and
- up to about 0.5 weight percent of an element selected from the group consisting of titanium, zirconium, boron, scandium, yttrium and the rare earth elements.
1 more element
Dependencies are inferred from the claim text.