| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hot dip galvanized steel sheet for working, free from folding-like surface defect and also excellent in workability. SOLUTION: A steel sheet, which has a composition containing, by weight, 0-0.0030% C, 0-0.05% Si, 0-0.5% Mn, 0-0.02% P, 0-0.020% S, 0.010-0.080% sol.Al, 0-0.0030% N, 0.0001-<0.0004% B, and 0.01-0.05% Cu and also containing one or >=2 elements among Ti, Zr, V, and Nb in the amount satisfying C/12<=Ti/48+ Nb/96+Zr/91+V/51-N/14-S/32<=4×(C/12), is used as a steel sheet as substrate. This steel sheet has <=1.2 mm sheet thickness.
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