US3765877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength aluminum base alloy
Assignee: Olin Corp
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Filing: 1972-11-24
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Granted: 1973-10-16
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Expires: 1992-11-24
Abstract
Abstract A high strength aluminum base alloy having good wear resistance consisting essentially of silicon from 7 to 20 percent, magnesium from 0.1 to 0.6 percent, silver from 0.1 to 1.0 percent, copper from 3.5 to 6 percent, balance essentially aluminum, and processing same.
Inventors
- 👤 P Sperry
- 👤 J Winter
- 👤 M Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:55
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
An aluminum base casting alloy having good wear resistance and elevated temperature properties consisting essentially of silicon from 7 to 12 percent, magnesium from 0.1 to 0.6 percent, silver from 0.1 to 1.0 percent, copper from 3.5 to 6 percent, balance aluminum.
Claim 2
Dependent Claim
16 words
An aluminum alloy according to claim 2 containing iron in an amount up to 1.5 percent.
Claim 3
Dependent Claim
29 words
An aluminum alloy according to claim 3 containing a material selected from the group consisting of from 0.1 to 0.7 percent manganese and from 0.1 to 0.5 percent chromium.
Claim 4
Dependent Claim
14 words
An aluminum alloy according to claim 2 containing from 0.01 to 0.35 percent titanium.
Claim 5
Dependent Claim
49 words
An aluminum alloy according to claim 2 containing up to 2.5 percent nickel, up to 0.5 percent zinc, up to 0.7 percent manganese, up to 0.5 percent chromium, up to 0.35 percent titanium, up to 1.5 percent iron, others, each up to 0.05 percent, total up to 0.25 percent.
Claim 6
Dependent Claim
12 words
An aluminum alloy according to claim 2 in the heat treated condition.
Claim 7
Dependent Claim
52 words
An aluminum base casting alloy having good wear resistance and elevated temperature properties for use in pistons and highly stressed engine parts consisting essentially of silicon from 7 to 12 percent, magnesium from 0.3 to 0.5 percent, silver from 0.3 to 0.7 percent, copper from 4.5 to 5.5 percent; balance essentially aluminum.
Claim 8
Dependent Claim
82 words
A process for providing an aluminum base casting alloy having good wear resistance and elevated temperature properties which comprises: A. casting an aluminum base alloy consisting essentially of silicon from 7 to 20 percent, magnesium from 0.1 to 0.6 percent, silver from 0.1 to 1.0 percent, copper from 3.5 to 6.0 percent, balance essentially aluminum in the temperature range of 1,250* to 1,500* F; and B. aging said alloy at a temperature of 300* to 500* F for one to 24 hours.
Claim 9
Dependent Claim
37 words
A process according to claim 9 including the step of solution heat treating after casting but before aging, said solution heat treating being at a temperature of 850* to 975* F for from one to 40 hours.
Claim 10
Dependent Claim
15 words
A process according to claim 10 including the step of quenching following solution heat treating.
References Cited (Backward Citations)
US2525130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |