| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel wire capable of being welded satisfactorily and having high strength after a weldment, and to provide a method of manufacturing the steel wire capable of manufacturing such steel wire at good productivity.SOLUTION: A steel wire contains, by mass%, C of 0.10% to 0.30%, Si of 0.20% to 2.00%, Mn of 0.30% to 2.50%, Cr of 0.20% to 2.00%, Mo of 0.01% to 0.30%, and the balance Fe with inevitable impurities and has a bainite structure of 95 vol.% or more. As the content of C is low, no hardening structure is substantially generated during a weldment and the weldment is easy to be conducted. As carbide generating element is contained, it can be highly reinforced by precipitation strengthening. It has high strength because it is substantially constituted by the bainite structure, and the structure substantially does not change before and after the weldment and the high strength can be maintained after the weldment. |
