Kabushiki Kaisha Kobe Seiko Sho

Shinzo Ashida

Nobuhiko Ibaraki

Yoshiro Yamada

Kenji Ochiai

Nobuyasu Hatsuoka

Katsuji Mizutani

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.

Wire rod for high strength and high toughness fine steel wire, high

A spring steel for vehicles having a composition substantially composed of 0.5-0.7 wt % of C, 1.0-1.8 wt & of Si, 0.1-1.0 wt % of Mn, below 0.7 wt % of Cr, 0.03-0.5 wt % of V and the balance of Fe and normally present impurities, and optionally at least one of Al, Zr, Nb and Ti each contained in an amount of 0.02-0.1 wt %.

Growing community of inventors

Nishinomiya, Japan

Shinzo Ashida