| 摘要 |
A steel wire rod includes, as a chemical composition, C, Si, Mn, Cr, Al, N, P, S, and optionally includes one or more selected from the group consisting of Mo, V, Ti, Nb, and B, and a remainder of Fe and impurities; in which a metallographic structure includes a pearlite and an area ratio of the pearlite is 85% or more; the average lamellar spacing of the pearlite is 50 nm to 100 nm; and when the Si content is represented by [%Si] by mass%, the Cr content in a cementite in the pearlite is represented by [%Cr¸] by mass%, and the Cr content in a ferrite in the pearlite is represented by [%Cr±] by mass%, [%Si], [%Cr¸], and [%Cr±] satisfy the following expression "([%Cr¸]/[%Cr±])‰¥(2.0+[%Si]×10)". |
