Patent ID: 8899087

Claim:
A method of producing a high strength wire, high carbon steel wire, characterized in that in said method comprises: subjecting a high carbon steel wire material having carbon content of 0.95 to 1.05 mass % to a pre-stage drawing process in which a magnitude of drawing epsilon as defined in formula (1) below is no smaller than 2.88, to form an intermediate wire material; subjecting the intermediate wire material formed by the pre-stage drawing process to a patenting treatment in which tensile strength of the wire material is adjusted to a range of 1421 to 1550 MPa; then subjecting the patented steel wire material to a subsequent drawing process including the final drawing, Epsilon=2*ln( D 0 /D 1) Formula (1) In the formula above, D 0 : Diameter (mm) of a steel wire material on the inlet side of the pre-stage drawing D 1 : Diameter (mm) of an intermediate wire material on the outlet side of the pre-stage drawing.