COLD ROLLED STEEL PLATE OF EXCELLENT MOLDABILITY, PANEL SHAPE CHARACTERISTICS AND DENTING RESISTANCE, MOLTEN ZINC PLATED STEEL PLATE, AND METHOD OF MANUFACTURING THESE STEEL PLATES

摘要

A cold rolled steel plate of excellent moldability, panel shape characteristics and denting resistance which has steel composition comprising 0.005-0.015 wt.% of C, 0.01-0.2 wt.% of Si, 0.2-1.5 wt.% of Mn, 0.01-0.07 wt.% of P, 0.006-0.015 wt.% of S, 0.01-0.08 wt.% of sol. Al, not less than 0.004 wt.% of N, not less than 0.003 wt.% of O, 0.04-0.23 wt.% of Nb, wherein 1.0