Method for making machinable lead-free copper alloys with additive
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United States of America Patent
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Mar 25, 1997
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N/A
app pub date -
Jun 21, 1995
filing date -
Jun 21, 1995
priority date (Note) -
Expired
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Abstract
Machinable lead free brasses for potable water applications are provided wherein a combination of bismuth and selenium are substituted in the alloy for lead and the bismuth and selenium are added to the alloy in the form of an additive product comprising bismuth selenide. A method of making the brasses which meets environmental and safety regulations is also provided. The bismuth selenide is preferably made by sintering particles of bismuth and selenium in a Bi/Se weight ratio of about 1.8 or greater and fusing the sinter.
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