Patent US4649087A successfully refreshed from Google Patents.
US4649087A
Expired / Lapsed
US
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Corrosion resistant aluminum brazing sheet
Assignee: Reynolds Metals Co
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Filing: 1985-06-10
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Granted: 1987-03-10
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Expires: 2005-06-10
Abstract
Abstract An aluminum core alloy for use in the manufacture of brazed heat exchanger assemblies having high resistance to corrosion and moderate strength. A preferred composition of the aluminum base alloy consists of from 0.13 to 0.22% titanium, from 0.8 to 1.5% manganese, 0.4 to 0.6% copper, up to 0.7% iron, up to 0.3% silicon, up to 0.3% magnesium, with the balance being essentially aluminum and normal impurities. Another preferred composition, which is a modification of the preceding composition, includes 0.3 to 0.6% magnesium.
Inventors
- 👤 Darwin H. Scott
- 👤 Kenneth D. Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:20
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; B32; B32B; B32B15/00; B32B15/01; B32B15/016; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
63 words
An aluminum brazing material useful as a core alloy in a brazing product having a core alloy clad with a brazing alloy, said brazing material, by weight percent, consisting essentially of 0.11 to 0.30% titanium, 0.3 to 1.5% manganese, 0.4 to 0.6% copper, up to 0.7% iron, up to 0.8% silicon, up to 1.5% magnesium, with the balance being aluminum and normal impurities.
Claim 2
Dependent Claim
63 words
An aluminum brazing material useful as a core alloy in a brazing product having a core alloy clad with a brazing alloy, said brazing material, by weight percent, consisting essentially of 0.11 to 0.30% titanium, 0.3 to 1.5% manganese, 0.4 to 0.6% copper, up to 0.7% iron, up to 0.8% silicon, up to 1.5% magnesium, with the balance being aluminum and normal impurities.
Claim 3
Dependent Claim
15 words
The aluminum brazing material of claim 1, wherein the magnesium content is up to 0.3%.
Claim 4
Dependent Claim
16 words
The aluminum brazing material of claim 1, wherein the magnesium content is between 0.3 and 0.6%.
Claim 5
Dependent Claim
16 words
The aluminum brazing material of claim 1, wherein the titanium content is between 0.13 and 0.22%.
Claim 6
Dependent Claim
16 words
The aluminum brazing material of claim 1, wherein the titanium content is between 0.15 and 0.18%.
Claim 7
Dependent Claim
31 words
The aluminum brazing material of claim 4, wherein the manganese content is between 0.8 and 1.5%, the silicon content is up to 0.3%, and the magnesium content is up to 0.3%.
Claim 8
Dependent Claim
32 words
The aluminum brazing material of claim 4, wherein the manganese content is between 0.8 and 1.5%, the silicon content is up to 0.3%, and the magnesium content is between 0.3 and 0.6%.
Claim 9
Dependent Claim
66 words
An aluminum brazing sheet having a core alloy and a brazing alloy clad on at least one face of the core alloy, the improvement wherein said core alloy, by weight percent, consists essentially of 0.11 to 0.30% titanium, 0.3 to 1.5% manganese, 0.4 to 0.6% copper, up to 0.7% iron, up to 0.8% silicon, up to 1.5% magnesium, with the balance being aluminum and normal impurities.
Claim 10
Dependent Claim
66 words
An aluminum brazing sheet having a core alloy and a brazing alloy clad on at least one face of the core alloy, the improvement wherein said core alloy, by weight percent, consists essentially of 0.11 to 0.30% titanium, 0.3 to 1.5% manganese, 0.4 to 0.6% copper, up to 0.7% iron, up to 0.8% silicon, up to 1.5% magnesium, with the balance being aluminum and normal impurities.
Claim 11
Dependent Claim
14 words
The improvement of claim 8, wherein said core alloy includes up to 0.3% magnesium.
Claim 12
Dependent Claim
15 words
The improvement of claim 8, wherein said core alloy includes between 0.3 and 0.6% magnesium.
Claim 13
Dependent Claim
15 words
The improvement of claim 8, wherein said core alloy includes between 0.13 and 0.22% titanium.
Claim 14
Dependent Claim
15 words
The improvement of claim 8, wherein said core alloy includes between 0.15 and 0.18% titanium.
Claim 15
Dependent Claim
29 words
The improvement of claim 8, wherein said core alloy includes up to 0.3% magnesium, between 0.8 and 1.5% manganese, up to 0.3% silicon, and between 0.13 and 0.22% titanium.
Claim 16
Dependent Claim
15 words
The improvement of claim 13, wherein said core alloy includes between 0.15 and 0.18% titanium.
Claim 17
Dependent Claim
29 words
The improvement of claim 8, wherein core alloy includes between 0.3% and 0.6% magnesium, between 0.8 and 1.5% manganese, up to 0.3% silicon, and between 0.13 and 0.22% titanium.
Claim 18
Dependent Claim
15 words
The improvement of claim 15, wherein said core alloy includes between 0.15 and 0.18% titanium.
Claim 19
Dependent Claim
63 words
An aluminum brazing material useful as a core alloy in a brazing product having a core alloy clad with a brazing alloy, said brazing material, by weight percent, consisting essentially of 0.11 to 0.30% titanium, 0.3 to 1.5% manganese, 0.005 to 0.7% copper, up to 0.7% iron, up to 0.8% silicon, less than 0.01% magnesium, with the balance being aluminum and normal impurities.
Claim 20
Dependent Claim
63 words
An aluminum brazing material useful as a core alloy in a brazing product having a core alloy clad with a brazing alloy, said brazing material, by weight percent, consisting essentially of 0.11 to 0.30% titanium, 0.3 to 1.5% manganese, 0.005 to 0.7% copper, up to 0.7% iron, up to 0.8% silicon, less than 0.01% magnesium, with the balance being aluminum and normal impurities.
References Cited (Backward Citations)
US1869996A
Cited
US3496620A
Cited
US3898053A
Cited
US3878871A
Cited
US3923557A
Cited
US3938991A
Cited
US4005243A
Cited
US4072542A
Cited
US4140556A
Cited
US4039298A
Cited
US4093782A
Cited
US4214925A
Cited
US4146164A
Cited
US4146163A
Cited
US4235628A
Cited
US4244756A
Cited
US4211827A
Cited
JPS55142846A
Cited
JPS5672158A
Cited
US4284437A
Cited
US4339510A
Cited
JPS5812695A
Cited
JPS5813614A
Cited
JPS5823560A
Cited
JPS5827335A
Cited
JPS5851197A
Cited
JPS58129747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |