| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel material for coating with excellent anticorrosion, capable of preventing corrosion by an effect of a corrosive action such as seawater or airborne sea salt particles.SOLUTION: In a steel material for coating, a base steel material includes: 0.04-0.30% C, 0.05-1.0% Si, 0.1-2.5% Mn, over 0% and 0.04% or less P, over 0% or 0.04% or less S, 0.005-0.20% Al, 0.05-1.0% Cu, 0.05-1.0% Cr, 0.001-0.015% N, and in addition, one or two kinds of 0.005-0.1% Ti and 0.005-0.1% Nb. A surface layer thereof includes 20-200 g/mZn, 0.3-20.0 g/mCu and in addition, one or two kinds of 0.3-20.0 g/mCr and 0.3-20.0 g/mNi.SELECTED DRAWING: None |
