Posco Co., Ltd

Seul-Gi So

Myung-Soo Kim

Ki-Cheol Kang

Jong-Chan Park

A galvanized steel sheet including a base steel sheet, and a zinc-based plating layer on the surface of the base steel sheet. The base steel sheet may include a first surface layer region corresponding to a depth of 25 μm from an interface between the base steel sheet and the zinc-based plating layer in a thickness direction of the base steel sheet, and a second surface layer region adjacent to the first surface layer region and corresponding to a depth of 25 μm to 50 μm in the thickness direction of the base steel sheet. A fraction of ferrite contained in the first surface layer region is 55 area % or more, an average grain size of the ferrite contained in the first surface layer region is 2 to 10 μm, and a fraction of ferrite contained in the second surface layer region is 30 area % or more.

Growing community of inventors

Gwangyang-si, South Korea

Seul-Gi So