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Wire rod for high strength and high toughness fine steel wire, high strength and high toughness fine steel wire, twisted products using the fine steel wires, and manufacture of the fine steel

Image Number 5 for United States Patent #5211772.

The fine steel wire according to the present invention has a high strength and high toughness, which is used as a rubber reinforcing material for a belt cord or tire cord, or as missile wires. Such a fine steel wire can be obtained by drawing a wire rod for a fine steel wire properly adjusted in its composition and structure, while applying working strain such that the total reduction of area in the final wire drawing step becomes 95% or more.

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