Patent ID: 8241759
Filing Date: 2012-08-14
Classification: C21D,C22C,C23C,Y10T

Abstract:
1. A high-strength galvanized steel sheet having excellent formability, comprising, as a chemical component of steel on a mass percent basis: 0.05% to 0.3% of C; more than 0.60% to 2.0% of Si; 0.50% to 3.50% of Mn; 0.003% to 0.100% of P; 0.010% or less of S; 0.010% to 0.06% of Al; 0.007% or less of N; and the balance including Fe and inevitable impurities, wherein a standard deviation of nano-hardness of the steel sheet's microstructure is 1.50 GPa or less and the steel sheet has a total area fraction of retained austenite and martensite of 5% or less.