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US 3,941,620 AGranted
Method of processing copper base alloys
AssigneeOlin Corporation
InventorsMichael J. Pryor, Jacob Crane, Sam Friedman, Eugene Shapiro
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Abstract
Method of processing nickel-tin containing copper base alloys in order to obtain an improved combination of strength and bend properties. The alloys processed herein contain from 7 to 14% nickel and from 1.5 to 3.3% tin.
Claims11
A method for processing copper base alloys to provide good strength and bend characteristics which comprises:
- A. providing a completely recrystallized, wrought copper base alloy consisting essentially of 7 to 14% nickel, 1.5 to 3.3% tin and the balance copper;
- B. cold rolling with a reduction of 20 to 50%;
- C. aging at a temperature of from 300.degree. to 550.degree.C for 15 minutes to 24 hours;
- and
- D. cold rolling with a reduction of from 20 to 55%, wherein the total reduction of said recrystallized alloy is less than about 65%.
2 more elements
Dependencies are inferred from the claim text.