US5292595A
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US
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Clad aluminum alloy material having high strength and high corrosion resistance for heat exchanger
Assignee: Sumitomo Light Metal Industries Ltd
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Filing: 1993-02-17
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Granted: 1994-03-08
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Expires: 2013-02-17
Abstract
Abstract A clad aluminum alloy material having high strength and high corrosion resistance for a heat exchanger, which is composed of a core material made of an aluminum alloy consisting of 0.3 to 2.0% of Mn, 0.25 to 0.8% of Cu, 0.05 to 1.0% of Si and 0.5% or less of Mg with the balance consisting of Al and unavoidable impurities; a sacrificial anode material bonded to one surface of the core material, the sacrificial anode material being made of an aluminum alloy consisting of 1.0 to 2.5% of Mg and 0.05 to less than 0.20% of Si with the balance consisting of Al and unavoidable impurities; and a cladding bonded to the other surface of the core material, the cladding being made of a brazing filler metal consisting of an Al-Si-base aluminum alloy. In the clad aluminum alloy materials, the core material may further include 0.35% or less of Ti and the sacrificial anode material may further include 3.0% or less of Zn or at least one member selected from the group consisting of 0.2% or less of In, 0.2% or less of Sn and 0.2% or less of Ga.
Inventors
- 👤 Shigenori Yamauchi
- 👤 Yoshifusa Shoji
- 👤 Kenji Kato
- 👤 Yuji Suzuki
- 👤 Chian T. Su
- 👤 Mituo Hashiura
- 👤 Sunao Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:29
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/089; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; B32; B32B; B32B15/00; B32B15/01; B32B15/016; F28F19/00; F28F19/02; F28F19/06; F28F21/081; F28F21/084; Y; Y10; Y10S; Y10S165/00; Y10S165/905; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/933; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A clad aluminum alloy having high strength and high corrosion resistance for a heat exchanger, which is composed of: a core material made of an aluminum alloy consisting of 0.3 to 2.0% of Mn, 0.25 to 0.8% of Cu, 0.05 to 1.0% of Si and 0.5% or less of Mg with the balance consisting of Al and unavoidable impurities; a sacrificial anode material bonded to one surface of said core material, said sacrificial anode material being made of an aluminum alloy consisting essentially of 1.0 to 2.5% of Mg and 0.05 to less than 0.20% of Si with the balance being Al and unavoidable impurities; and a cladding bonded to the other surface of said core material, said cladding being made of a brazing filler metal consisting of an Al-Si-base aluminum alloy.
Claim 2
Dependent Claim
132 words
A clad aluminum alloy having high strength and high corrosion resistance for a heat exchanger, which is composed of: a core material made of an aluminum alloy consisting of 0.3 to 2.0% of Mn, 0.25 to 0.8% of Cu, 0.05 to 1.0% of Si and 0.5% or less of Mg with the balance consisting of Al and unavoidable impurities; a sacrificial anode material bonded to one surface of said core material, said sacrificial anode material being made of an aluminum alloy consisting essentially of 1.0 to 2.5% of Mg and 0.05 to less than 0.20% of Si with the balance being Al and unavoidable impurities; and a cladding bonded to the other surface of said core material, said cladding being made of a brazing filler metal consisting of an Al-Si-base aluminum alloy.
Claim 3
Dependent Claim
50 words
A clad aluminum alloy material as claimed in claim 1, wherein said sacrificial anode material is made of an aluminum alloy consisting of 1.0 to 2.5% of Mg, 0.05 to less than 0.20% of Si and 3.0% or less of Zn with the balance consisting of Al and unavoidable impurities.
Claim 4
Dependent Claim
71 words
A clad aluminum alloy material as claimed in claim 1, wherein said sacrificial anode material is made of an aluminum alloy consisting of 1.0 to 2.5% of Mg, 0.05 to less than 0.20% of Si and at least one member selected from the group consisting of 0.2% or less of In, 0.2% or less of Sn and 0.2% or less of Ga with the balance consisting of Al and unavoidable impurities.
Claim 5
Dependent Claim
137 words
A clad aluminum alloy having high strength and high corrosion resistance for a heat exchanger, which is composed of: a core material made of an aluminum alloy consisting of 0.3 to 2.0% of Mn, 0.25 to 0.8% of Cu, 0.05 to 1.0% of Si, 0.5% or less of Mg and 0.35% or less of Ti with the balance consisting of Al and unavoidable impurities; a sacrificial anode material bonded to one surface of said core material, said sacrificial anode material being made of an aluminum alloy consisting essentially of 1.0 to 2.5% of Mg and 0.05 to less than 0.20% of Si with the balance being Al and unavoidable impurities; and a cladding bonded to the other surface of said core material, said cladding being made of a brazing filler metal consisting of an Al-Si-base aluminum alloy.
Claim 6
Dependent Claim
137 words
A clad aluminum alloy having high strength and high corrosion resistance for a heat exchanger, which is composed of: a core material made of an aluminum alloy consisting of 0.3 to 2.0% of Mn, 0.25 to 0.8% of Cu, 0.05 to 1.0% of Si, 0.5% or less of Mg and 0.35% or less of Ti with the balance consisting of Al and unavoidable impurities; a sacrificial anode material bonded to one surface of said core material, said sacrificial anode material being made of an aluminum alloy consisting essentially of 1.0 to 2.5% of Mg and 0.05 to less than 0.20% of Si with the balance being Al and unavoidable impurities; and a cladding bonded to the other surface of said core material, said cladding being made of a brazing filler metal consisting of an Al-Si-base aluminum alloy.
Claim 7
Dependent Claim
50 words
A clad aluminum alloy material as claimed in claim 4, wherein said sacrificial anode material is made of an aluminum alloy consisting of 1.0 to 2.5% of Mg, 0.05 to less than 0.20% of Si and 3.0% or less of Zn with the balance consisting of Al and unavoidable impurities.
Claim 8
Dependent Claim
71 words
A clad aluminum alloy material as claimed in claim 4, wherein said sacrificial anode material is made of an aluminum alloy consisting of 1.0 to 2.5% of Mg, 0.05 to less than 0.20% of Si and at least one member selected from the group consisting of 0.2% or less of In, 0.2% or less of Sn and 0.2% or less of Ga with the balance consisting of Al and unavoidable impurities.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-07 | 1997-09-06 | 1998-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-07 | 2001-09-06 | 2002-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-07 | 2005-09-06 | 2006-03-08 | $7700.00 | Window Closed / Lapsed |