High impact strength power metal part and method for making same
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United States of America Patent
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Mar 15, 1988
Issued Date -
N/A
app pub date -
Nov 28, 1986
filing date -
Jun 25, 1986
priority date (Note) -
Expired
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Abstract
A copper or copper alloy infiltrated ferrous powder metal part, and method for making the same, characterized as having after infiltration an overall density of at least 7.50 g/cm.sup.3 and a diffusion depth of copper into the steel matrix of less than about 4 micrometers as determined by chemical etching or less than about 8 micrometers as determined by electron dispersive X-ray analysis (EDXA), wherein said ferrous metal is plain carbon steel having a combined carbon content in the range of about 0.15% to about 1.25%, or a low alloy steel.
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