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Patent US4732731A successfully refreshed from Google Patents.
US4732731A
Expired / Lapsed
US
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Copper alloy for electronic instruments and method of manufacturing the same
Assignee: Furukawa Electric Co Ltd
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Filing: 1986-08-26
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Granted: 1988-03-22
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Expires: 2006-08-26
Abstract
Abstract A copper alloy is disclosed, which contains 0.1 to 3.0 wt % of Ni, 0.1 to 1.0 wt % of Ti, the ratio of Ni to Ti being 4</=Ni/Ti thereby, 0.1 to 6.0 wt % of Sn, and 0.005 to 3.0 wt % in total of one or more elements selected from the group consisting of Zn, Mn, Mg, Ca, RE, B, Sb, Te, Si, Co, Fe, Zr, Ag, Mm and Al, and consists of the remainder of Cu and the inevitable impurities. The method for the manufacture of the alloy is characterized in that, after copper alloy ingot was maintained and homogenized for 0.5 to 15 hours at 750 DEG to 960 DEG C. prior to rolling, the hot rolling is carried out starting from a temperature of 700 DEG to 880 DEG C. and the cooling is made immediately after the end of rolling.
Inventors
- 👤 Makoto Asai
- 👤 Shoji Shiga
- 👤 Toru Tanigawa
- 👤 Yoshimasa Oyama
- 👤 Shigeo Shinozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:39
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/40; H10W70/456; C; C22; C22C; C22C9/00; C22C9/02; C22C9/06; C22F; C22F1/00; C22F1/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A copper alloy for electronic instruments which consists essentially of 0.1 to 3.0 wt.% of Ni, 0.1 to 1.0 wt.% of Ti, wherein the ratio of Ni/Ti is greater than or equal to 4, 0.1 to 6.0 wt.% of Sn, and 0.005 to 3.0 wt.% in total of one or more elements selected from the group consisting of Zn, Mn, Mg, the rare earth elements, Ca, B, Sb, Te, Si, Co, Fe, Zr, Ag, MM (misch metal) and Al with the remainder being Cu and inevitable impurities, and wherein said alloy contains O 2 in an amount of not more than 20 ppm, and wherein said alloy has a particle diameter of precipitates of not more than 5 μm.
Claim 2
Dependent Claim
119 words
A copper alloy for electronic instruments which consists essentially of 0.1 to 3.0 wt.% of Ni, 0.1 to 1.0 wt.% of Ti, wherein the ratio of Ni/Ti is greater than or equal to 4, 0.1 to 6.0 wt.% of Sn, and 0.005 to 3.0 wt.% in total of one or more elements selected from the group consisting of Zn, Mn, Mg, the rare earth elements, Ca, B, Sb, Te, Si, Co, Fe, Zr, Ag, MM (misch metal) and Al with the remainder being Cu and inevitable impurities, and wherein said alloy contains O 2 in an amount of not more than 20 ppm, and wherein said alloy has a particle diameter of precipitates of not more than 5 μm.
Claim 3
Dependent Claim
40 words
The copper alloy according to claim 1, which further contains 0.001 to 1.0 wt.% in total of one or more elements selected from the group consisting of Cr, Cd, Be Y, In, Tl, Pb, V, Nb, Ta, As, and Se.
Claim 4
Dependent Claim
21 words
The copper alloy according to claim 1, wherein said alloy contains oxygen in an amount of not more than 10 ppm.
Claim 5
Dependent Claim
30 words
The copper alloy according to claim 1, wherein said alloy contains 1.0 to 2.8 wt.% of Ni, 0.20 to 0.52 wt% of Ti and 0.7 to 3.7 wt.% of Sn.
Claim 6
Dependent Claim
18 words
The copper alloy according to claim 1, having a tensile strength of at least 66 kg/mm 2 .
Claim 7
Dependent Claim
18 words
The copper alloy according to claim 1, wherein the ratio of Ni/Ti is in the range of 4-10.
Claim 8
Dependent Claim
78 words
The copper alloy according to claim 1, produced by a method comprising: (a) subjecting said copper alloy to melt-casting in a non-oxidative atmosphere, to obtain an ingot of said copper alloy by semi-continuous or continuous casting, (b) maintaining the ingot for 0.5 to 15 hours at 750° to 960° C., thereby homogenizing the same, (c) hot rolling said ingot at a temperature of 700° to 880° C., and (d) cooling said ingot after the end of said rolling.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |