COPPER ALLOY FOR BEARING AND BEARING
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United States of America Patent
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Nov 4, 2015
filing date -
Nov 4, 2014
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Abstract
There are provided a copper alloy for a bearing and a bearing in which a Mn—Si compound is prevented from being broken and becoming a foreign matter. The copper alloy for a bearing and the bearing according to the present invention contain 25 wt % or more and 48 wt % or less of Zn, 1 wt % or more and 7 wt % or less of Mn, 0.5 wt % or more and 3 wt % or less of Si and 1 wt % or more and 10 wt % or less of Bi, the balance consisting of inevitable impurities and Cu, and are characterized in that the average width value among Mn—Si primary crystal particles dispersed in a sliding surface on which a counter shaft slides is 3 μm or more.
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