Steel wire and method of manufacturing the same
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United States of America Patent
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Nov 30, 2004
Grant Date -
N/A
app pub date -
Mar 13, 2000
filing date -
May 21, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A steel wire, 0.10-0.40 mm in diameter, obtained by subjecting a high-carbon (0.70-0.90 wt. %) steel wire material to heat treatment and wire drawing, wherein its tensile strength and test values of special repeated torsional tests satisfy a predetermined relation; and a method of manufacturing the same. A high strength steel wire which has so high a ductility as to substantially prevent the wire from being broken even during wire twisting, and which rarely encounters a decrease in the ductility even after the wire has been subjected to age hardening by heating, is obtained, and a method of manufacturing the same is economical.
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