Powder metallurgy compositions
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United States of America Patent
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Aug 15, 1995
Issued Date -
N/A
app pub date -
Jul 22, 1994
filing date -
Mar 6, 1990
priority date (Note) -
Expired
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Abstract
Lead-free metallurgy powder for use in manufacturing a shaped bronze part by powder metallurgy techniques which consists essentially of a substantially homogeneous blend of about 90 parts copper, about 10 parts tin and an amount of bismuth in the range from an amount effective to improve the machinability of the shaped bronze part up to about 5% weight are disclosed. Lead-free metallurgy powder for use in manufacturing a shaped bronze part by powder metallurgy techniques which consists essentially of a substantially homogeneous blend of about 70-90 parts copper, about 10-30 parts zinc and an amount of bismuth in the range from an amount effective to improve the machinability of the shaped bronze part up to about 5% weight are also disclosed.
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