Patent ID: 8076008

Claim:
A high-strength galvanized steel sheet comprising a base steel and a galvanized coating layer formed over a surface of the base steel, the base steel having a chemical composition containing on a mass basis: 0.005% to 0.12% of C; more than 1.0% to 2.7% of Si; 0.5% to 2.8% of Mn; 0.1% or less of P; 0.07% or less of S; 1.0% or less of Al; 0.008% or less of N; and the balance being Fe and inevitable impurities, and a microstructure constituted of at least 90% of ferrite and 2% to 10% of martensite on an area basis, wherein the ferrite has a Vickers hardness of 120 or more on average, and an inclusion is precipitated from a grain boundary with a length of 50% or less relative to an entire length of the grain boundary in a surface layer of the base steel with a depth of 3 μm from an interface between the coating layer and the base steel.