NON-MAGNETIC PRECIOUS ALLOY FOR HOROLOGICAL APPLICATIONS |
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| 申请号 | US15729711 | 申请日 | 2017-10-11 | 公开(公告)号 | US20180112292A1 | 公开(公告)日 | 2018-04-26 |
| 申请人 | Nivarox-FAR S.A.; | 发明人 | Denis VINCENT; Christian Charbon; | ||||
| 摘要 | A precious alloy for horological applications contains by mass, in parts per thousand of the total, 540 to 630 parts of gold, 150 to 220 parts of palladium, 100 to 265 parts of silver, more than 150 to 265 parts of copper, from 0.0 to 0.2 parts of iridium, 0.0 to 4.0 parts of zinc, and the remainder containing iron and/or nickel and/or cobalt. The proportion by mass of the total content of gold, palladium, silver, copper, iridium and zinc is greater than 999.900 parts, the proportion by mass of the remainder is less than 0.100 parts. The density of the alloy includes between 13.5 and 14.5 g/cm3. The proportion by mass of cobalt is less than 0.005 parts, that of iron is less than 0.005 parts, and that of nickel is less than 0.0005 parts. The total of copper and zinc includes between 150 and 270 parts. | ||||||
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| 说明书全文 | |||||||
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