US4224065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum base alloy
Assignee: Rio Tinto Switzerland AG
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Filing: 1979-04-27
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Granted: 1980-09-23
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Expires: 1999-04-27
Abstract
Abstract An aluminum alloy of the AlCu type containing cadmium and manganese exhibits an optimum combination of strength, toughness and corrosion resistance. The alloy contains 4.0 to 5.0% copper, 0.1 to 0.2% cadmium and 0.2 to 1.0% manganese. The alloy is suitable for the production of high strength, tough and corrosion resistant extrusion products.
Inventors
- 👤 Jean-Claude Jaquet
- 👤 Manfred Heckler
- 👤 Heinrich Zoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
56 words
An aluminum base alloy having a good combination of strength, toughness and corrosion resistance consisting of from 4.0 to 5.0% copper, from 0.1 to 0.2% cadmium, from 0.2 to 1.0% manganese, a material selected from the group consisting of from 0.1 to 0.4% zirconium, from 0.1 to 0.2% vanadium and mixtures thereof, and the balance aluminum.
Claim 2
Dependent Claim
56 words
An aluminum base alloy having a good combination of strength, toughness and corrosion resistance consisting of from 4.0 to 5.0% copper, from 0.1 to 0.2% cadmium, from 0.2 to 1.0% manganese, a material selected from the group consisting of from 0.1 to 0.4% zirconium, from 0.1 to 0.2% vanadium and mixtures thereof, and the balance aluminum.
Claim 3
Dependent Claim
26 words
An alloy according to claim 1 wherein said alloy contains from 4.4 to 4.7% copper, from 0.13 to 0.17% cadmium and from 0.4 to 0.7% manganese.
Claim 4
Dependent Claim
14 words
An alloy according to claim 1 containing 0.5% max. each of iron and silicon.
Claim 5
Dependent Claim
18 words
An alloy according to claim 1 containing thermally stable aluminides formed by the elements manganese, zirconium and vanadium.
Claim 6
Dependent Claim
18 words
Extruded products having a composition as defined in claim 1 characterized by high strength, toughness and corrosion resistance.
Claim 7
Dependent Claim
25 words
An alloy according to claim 2 wherein said zirconium content is from 0.17 to 0.22% and wherein said vanadium content is from 0.13 to 0.17%.
Claim 8
Dependent Claim
14 words
An alloy according to claim 3 containing 0.17% max. each of iron and silicon.
Claim 9
Dependent Claim
18 words
An alloy according to claim 4 wherein said aluminides have a particle diameter between 0.1 and 1 μm.
References Cited (Backward Citations)
US2026551A
Cited
US2459492A
Cited
GB709527A
Cited
US2784126A
Cited
GB872051A
Cited
US2915391A
Cited
US3291654A
Cited
US3759758A
Cited
SU336361A1
Cited
US3935007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |