Sughrue Mion, PLLC
Steel wire and method of manufacturing the same
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.
Bridgestone Corporation
B Y C D D D B
B21C Y10T C21D D07B D07B D07B B21C
inventional additional inventional additional additional inventional inventional
Yoshikazu Hideki Toshiyuki Naohiko Masuhiro
Kaneko Masubuchi Kobayashi Obana Fujita