Machinable-grade, ferrous powder blend containing boron nitride and method thereof
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United States of America Patent
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May 22, 1990
Grant Date -
N/A
app pub date -
Nov 2, 1988
filing date -
Nov 2, 1988
priority date (Note) -
Expired
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Abstract
The machinability characteristics of P/M ferrous sintered compacts are improved when the compact is prepared from a ferrous powder having a maximum particle size less than about 300 microns, and from at least about 0.01 weight percent of a boron nitride powder comprising agglomerates of irregular-shaped, submicron particles.
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