US4559200A
Expired / Lapsed
US
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High strength and high conductivity copper alloy
Assignee: Mitsui Kinzoku Co Ltd
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Filing: 1984-08-07
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Granted: 1985-12-17
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Expires: 2004-08-07
Abstract
Abstract A copper alloy excellent in general properties such as heat resistance, electric and heat conductivity and mechanical strength and suitable for use as materials for lead frames of electronic parts, heat exchanger fins, or the like can be obtained by optimizing the Fe and Ti contents and proportions of a Cu-Fe-Ti ternary alloy and adding thereto a suitable amount of one or more members selected from the group consisting of Mg, Sb, V Misch metal, Zr, In, Zn, Sn, Ni, Al, and P.
Inventors
- 👤 Syuichi Yamasaki
- 👤 Hiroshi Yamaguchi
- 👤 Yousuke Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
C; C22; C22C; C22C9/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A high strength and high conductivity copper alloy comprising 0.05 to 1.0% by weight of Ti, 0.07 to 2.6% by weight of Fe, and one or more members selected from the group consisting of 0.005 to 0.5% by weight of Mg, 0.01 to 0.5% by weight of each of Sb, V, Misch metal, Zr, In, Zn, Sn and Ni, 0.005 to 0.2% by weight of Al and 0.005 to 0.07% by weight of P, and the balance of Cu and wherein the Fe/Ti ratio (by weight) is within the range of 1.7 to 2.3.
Claim 2
Dependent Claim
94 words
A high strength and high conductivity copper alloy comprising 0.05 to 1.0% by weight of Ti, 0.07 to 2.6% by weight of Fe, and one or more members selected from the group consisting of 0.005 to 0.5% by weight of Mg, 0.01 to 0.5% by weight of each of Sb, V, Misch metal, Zr, In, Zn, Sn and Ni, 0.005 to 0.2% by weight of Al and 0.005 to 0.07% by weight of P, and the balance of Cu and wherein the Fe/Ti ratio (by weight) is within the range of 1.7 to 2.3.
Claim 3
Dependent Claim
23 words
An alloy as defined in claim 1 wherein the amount of Mg added is within the range of 0.03 to 0.10% by weight.
Claim 4
Dependent Claim
23 words
An alloy as defined in claim 1 wherein the amount of Ni added is within the range of 0.01 to 0.07% by weight.
References Cited (Backward Citations)
DD63651A1
Cited
JPS5579848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |