US3881879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Al-Si-Mg alloy
Assignee: Reynolds Metals Co
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Filing: 1973-10-15
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Granted: 1975-05-06
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Expires: 1993-10-15
Abstract
Abstract An improved aluminum alloy, referred to as a core material, is provided which is particularly adapted for use in manufacturing articles by vacuum brazing techniques because such core material has optimum resistance to sag at brazing temperatures and because it has a solidus of about 1160*F to 1180*F, is heat treatable to a minimum yield strength of 12,000 psi, and is corrosion resistant. A heat treatable cladding alloy is also provided for use as a brazing component either alone or with such core material and other suitable core materials. The preferred cladding alloy has a liquidus of about 1,065*-1,085*F, has a narrow melting range of about 20* to about 40*F, is corrosion resistant, and provides joints of optimum strength and quality.
Inventors
- 👤 Jr Ogle R Singleton
- 👤 Jr Bennie R Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:15
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; B23K35/001; B23K35/002; C; C22; C22C; C22C21/00; C22C21/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
An article comprising a brazing component in wrought form, adapted to provide filler material for bonding parts to be joined by brazing, said component being composed of an aluminum base alloy consisting essentially of aluminum, about 11-14.5 percent Si, about 0.2-1.2 percent Fe, up to about 0.25 percent Cr, up to about 0.3 percent Mn, and about 0.2-1.0 percent Mg by weight, in amounts effective to achieve a narrow melting range not exceeding 30*F and a liquidus temperature of about 1075*F.
Claim 2
Dependent Claim
81 words
An article comprising a brazing component in wrought form, adapted to provide filler material for bonding parts to be joined by brazing, said component being composed of an aluminum base alloy consisting essentially of aluminum, about 11-14.5 percent Si, about 0.2-1.2 percent Fe, up to about 0.25 percent Cr, up to about 0.3 percent Mn, and about 0.2-1.0 percent Mg by weight, in amounts effective to achieve a narrow melting range not exceeding 30*F and a liquidus temperature of about 1075*F.
Claim 3
Dependent Claim
21 words
An article according to claim 1 in which the iron content of said alloy is at least 0.6 percent by weight.
Claim 4
Dependent Claim
17 words
An article according to claim 1 in which said alloy contains about 0.3 percent manganese by weight.
Claim 5
Dependent Claim
20 words
An article according to claim 1 in which the chromium content of said alloy is about 0.10-0.20 percent by weight.
Claim 6
Dependent Claim
19 words
An article according to claim 1 in which said alloy includes up to about 0.3 percent copper by weight.
Claim 7
Dependent Claim
19 words
An article according to claim 1 in which said alloy includes up to about 0.5 percent zinc by weight.
Claim 8
Dependent Claim
77 words
A BRAZING COMPONENT IN THE FORM OF AN O-RING, STRIP, DISC, WIRE OR THE LIKE, ADAPTED FOR USE AS AN INSERT BETWEEN PARTS TO BE JOINED BY BRAZING, SAID COMPONENT BEING COMPOSED OF AN ALUMINUM BASE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, ABOUT 9-14.5 PERCENT SI, ABOUT 0.2-0.8 PERCENT FE, AND ABOUT 0.25-0.7 PERCENT MG BY WEIGHT IN AMOUNTS EFFECTIVE TO ACHIEVE A MELTING RANGE OF ABOUT 20* TO ABOUT 40*F. AND A LIQUIDUS TEMPERATURE OF ABOUT 1065-1085*F.
Claim 9
Dependent Claim
77 words
A BRAZING COMPONENT IN THE FORM OF AN O-RING, STRIP, DISC, WIRE OR THE LIKE, ADAPTED FOR USE AS AN INSERT BETWEEN PARTS TO BE JOINED BY BRAZING, SAID COMPONENT BEING COMPOSED OF AN ALUMINUM BASE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, ABOUT 9-14.5 PERCENT SI, ABOUT 0.2-0.8 PERCENT FE, AND ABOUT 0.25-0.7 PERCENT MG BY WEIGHT IN AMOUNTS EFFECTIVE TO ACHIEVE A MELTING RANGE OF ABOUT 20* TO ABOUT 40*F. AND A LIQUIDUS TEMPERATURE OF ABOUT 1065-1085*F.
References Cited (Backward Citations)
US2823995A
Cited
US1947121A
Cited
US2075090A
Cited
US2525130A
Cited
US2602413A
Cited
US2821495A
Cited
US3373483A
Cited
US3811177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |