US4636356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum brazing alloy
Assignee: Sumitomo Precision Products Co Ltd
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Filing: 1985-03-29
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Granted: 1987-01-13
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Expires: 2005-03-29
Abstract
Abstract A brazing material is disclosed, particularly suitable for the brazing of fins onto a heat exchanger exposed to high internal pressure, comprised of an Al-Si based alloy wherein the Fe content is limited to not more than 0.15 wt %. The brazing material is suitable for use in the brazing of Mg-containing materials.
Inventors
- 👤 Shosuke Iwasaki
- 👤 Tetsuo Abiko
- 👤 Michiki Hagiwara
- 👤 Keizo Nanba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:40
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; Y; Y10; Y10S; Y10S165/00; Y10S165/905; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
An aluminum brazing alloy, consisting essentially of Si from 9.8-11.7%, Fe 0.02 to 0.15%, Cu from 0.01-0.03%, Mn at about 0.01%, Mg from 0.01-1.56%, Cr from 0.02-0.03%, Zn at about 0.01%, Ti at about 0.01%, and the balance aluminum, all on a weight basis as a percentage of the total.
Claim 2
Dependent Claim
50 words
An aluminum brazing alloy, consisting essentially of Si from 9.8-11.7%, Fe 0.02 to 0.15%, Cu from 0.01-0.03%, Mn at about 0.01%, Mg from 0.01-1.56%, Cr from 0.02-0.03%, Zn at about 0.01%, Ti at about 0.01%, and the balance aluminum, all on a weight basis as a percentage of the total.
Claim 3
Independent Claim
72 words
A method of brazing metal material to form a joint therebetween using an aluminum brazing alloy, the improvement comprising forming said joint with said aluminum brazing alloy consisting essentially of Si from 9.8-11.7%, Fe from 0.02-0.15%, Cu from 0.01-0.03%, Mn at about 0.01%, Mg from 0.01-1.56%, Cr from 0.02-0.03%, Zn at about 0.01%, Ti at about 0.01%, and the balance aluminum, all on a weight basis as a percentage of the total.
Claim 4
Independent Claim
72 words
A method of brazing metal material to form a joint therebetween using an aluminum brazing alloy, the improvement comprising forming said joint with said aluminum brazing alloy consisting essentially of Si from 9.8-11.7%, Fe from 0.02-0.15%, Cu from 0.01-0.03%, Mn at about 0.01%, Mg from 0.01-1.56%, Cr from 0.02-0.03%, Zn at about 0.01%, Ti at about 0.01%, and the balance aluminum, all on a weight basis as a percentage of the total.
Claim 5
Independent Claim
70 words
A method of joining two pieces of material, at least one of said pieces containing magnesium, comprising brazing said pieces with an aluminum brazing alloy consisting essentially of Si from 9.8-11.7%, Fe from 0.02-0.15%, Cu from 0.01-0.03%, Mn at about 0.01%, Mg from 0.01-1.56%, Dr from 0.02-0.03%, Zn at about 0.01%, Ti at about 0.01%, and the balance aluminum, all on a weight basis as a percentage of the total.
Claim 6
Independent Claim
70 words
A method of joining two pieces of material, at least one of said pieces containing magnesium, comprising brazing said pieces with an aluminum brazing alloy consisting essentially of Si from 9.8-11.7%, Fe from 0.02-0.15%, Cu from 0.01-0.03%, Mn at about 0.01%, Mg from 0.01-1.56%, Dr from 0.02-0.03%, Zn at about 0.01%, Ti at about 0.01%, and the balance aluminum, all on a weight basis as a percentage of the total.
References Cited (Backward Citations)
US3994695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |