Patent ID: 6322906
Filing Date: 2001-11-27
Classification: C23C,Y10T

Abstract:
A galvanized steel sheet comprising:a galvanized coating layer having a coating weight of from about 20 to about 60 g/m.sup.2 formed on at least one surface of the steel sheet; anda zinc phosphate coating layer having a coating weight of from about 0.5 to about 3.0 g/m.sup.2 formed on the galvanized coating layer, the zinc phosphate coating layer containing from about 0.5 to about 10.0 percent by weight of magnesium, from about 0.1 to about 2.0 percent by weight of nickel, and from about 0.5 to about 8.0 percent by weight of manganese, the manganese content and the nickel content satisfying the following relationship:[Ni].times.7.6-10.9.ltoreq.[Mn].ltoreq.[Ni].times.11.4wherein [Mn] represents the manganese content, in percent by weight, and [Ni] represents the nickel content, in percent by weight.