Cobalt-nickel-chromium-molybdenum alloys with reduced level of titanium nitride inclusions
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United States of America Patent
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Nov 1, 2011
Grant Date -
Mar 10, 2005
app pub date -
Sep 5, 2003
filing date -
Sep 5, 2003
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Abstract
A cobalt-nickel-chromium-molybdenum alloy useful in surgical implant applications includes, in weight percent based on total alloy weight, at least 20 cobalt, 33.0 to 37.0 nickel, 19.0 to 21.0 chromium, 9.0 to 10.5 molybdenum, and less than 30 ppm nitrogen. Embodiments of the alloy lack significant levels of titanium nitride and mixed carbonitride inclusions. The alloy may be cold drawn to thin-gauge wire without damage to the die as may be caused by hard particle inclusions in certain conventional alloy formulations.
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