| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot-dipped steel sheet having a stable high strength, a high yield ratio, and good ductility and stretch-flangeability, and to provide a method for producing the same. <P>SOLUTION: The steel sheet includes a hot-dip galvanized steel sheet having a hot-dip galvanized layer on the surface of the steel sheet, wherein the steel sheet contains, by mass, 0.01 to 0.2% C, 2 to 5% Mn, 0.001 to 0.1% sol. Al, 0.05% or less P, 0.01% or less S, 0.01% or less N, and 0.01-0.5% Ti+Nb, further contains one or more selected from the group consisting of 0.5% or less Si, 1% or less Cr, 1% or less Cu, 1% or less Ni, 0.5% or less V, 0.5% or less Mo, 0.5% or less W, 0.5% or less Zr, 0.5% or less Ta, and 0.5% or less Hf, and has a chemical composition in which C* specified by a specific formula is 0.001-0.2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
