US4828936A
Expired / Lapsed
US
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Aluminum alloy sheet excellent in high-temperature sagging resistance and sacrificial anode property and having high room-temperature strength
Assignee: MA Aluminum Corp
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Filing: 1987-06-09
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Granted: 1989-05-09
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Expires: 2007-06-09
Abstract
Abstract An aluminum alloy sheet as a fin material for tubes of a heat exchanger, excellent in high-temperature sagging resistance and sacrificial anode property and having a high room-temperature strength, which consists essentially of: Manganese: from 0.95 to 1.50 wt. %, silicon: from 0.5 to 1.2 wt. %, zinc: from 0.1 to 2.0 wt. %, at least one element selected from the group consisting of: copper: from 0.05 to 0.60 wt. %, and magnesium: from 0.05 to 0.60 wt. %, where, the total amount of said copper and said magnesium being up to 1.0 wt. %, and the balance being aluminum and incidental impurities. the above-mentioned aluminum alloy sheet may further additionally contain at least one element selected from the group consisting of: chromium: from 0.03 to 0.30 wt. %, and zirconium: from 0.03 to 0.15 wt. % where, the total amount of said chromium and said zirconium being up to 0.4 wt. %.
Inventors
- 👤 Ken Toma
- 👤 Masami Asano
- 👤 Noriaki Takahashi
- 👤 Shoji Takeuchi
- 👤 Yo Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:14
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/10; B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0233; B23K35/0238; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
An aluminum alloy sheet as a fin material for a tube of a heat exchanger, having excellent high-temperature sagging resistance and sacrificial anode property and having high room-temperature strength, which consists essentially of: manganese: from 0.95 to 1.50 wt.%, silicon: from 0.5 to 1.2 wt.%, zinc: from 0.1 to 2.0 wt.%, at least on element selected from the group consisting of: copper: from 0.05 to 0.60 wt.%, and magnesium: from 0.05 to 0.60 wt.%, the total amount of said copper and said magnesium being up to 1.0 wt.%, and the balance being essentially aluminum, said aluminum alloy sheet being characterized by the presence of uniformly dispersed fine particles of Al-Mn-Si compound.
Claim 2
Dependent Claim
111 words
An aluminum alloy sheet as a fin material for a tube of a heat exchanger, having excellent high-temperature sagging resistance and sacrificial anode property and having high room-temperature strength, which consists essentially of: manganese: from 0.95 to 1.50 wt.%, silicon: from 0.5 to 1.2 wt.%, zinc: from 0.1 to 2.0 wt.%, at least on element selected from the group consisting of: copper: from 0.05 to 0.60 wt.%, and magnesium: from 0.05 to 0.60 wt.%, the total amount of said copper and said magnesium being up to 1.0 wt.%, and the balance being essentially aluminum, said aluminum alloy sheet being characterized by the presence of uniformly dispersed fine particles of Al-Mn-Si compound.
Claim 3
Dependent Claim
55 words
The aluminum alloy sheet as claimed in claim 1, wherein: said aluminum alloy sheet further additionally contains at least one element selected from the group consisting of: chromium: from 0.03 to 0.30 wt.%, and zirconium: from 0.03 to 0.15 wt.%, where, the total amount of said chromium and said zirconium being up to 0.4 wt.%.
Claim 4
Dependent Claim
60 words
The aluminum alloy sheet as claimed in claim 1, which consists essentially of: manganese: from 1.0 to 1.3 wt.%, silicon: from 0.8 to 1.1 wt.%, zinc: from 0.3 to 1.5 wt.%, at least one element selected from the group consisting of: copper: from 0.1 to 0.5 wt.%, and magnesium: from 0.1 to 0.5 wt.%, and the balance being essentially aluminum.
Claim 5
Dependent Claim
55 words
The aluminum alloy sheet as claimed in claim 3, wherein: said aluminum alloy sheet further additionally contains at least one element selected from the group consisting of: chromium: from 0.03 to 0.30 wt.%, and zirconium: from 0.03 to 0.15 wt.%, where, the total amount of said chromium and said zirconium being up to 0.4 wt.%.
Claim 6
Dependent Claim
26 words
The aluminum alloy sheet as claimed in claim 1 wherein: said aluminum alloy sheet has a brazing metal film applied onto at least one surface thereof.
Claim 7
Dependent Claim
26 words
The aluminum alloy sheet as claimed in claim 2, wherein: said aluminum alloy sheet has a brazing metal film applied onto at least one surface thereof.
Claim 8
Dependent Claim
26 words
The aluminum alloy sheet as claimed in claim 3, wherein: said aluminum alloy sheet has a brazing metal film applied onto at least one surface thereof.
Claim 9
Dependent Claim
26 words
The aluminum alloy sheet as claimed in claim 4, wherein: said aluminum alloy sheet has a brazing metal film applied onto at least one surface thereof.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |