| 摘要 |
The present invention provides a galvanized steel sheet having excellent plating wettability and plating adhesion even when the base steel sheet contains Si and Mn, and provides a manufacturing method therefor. The galvanized steel sheet pertaining to the present invention includes a base steel plate containing Si, Mn, and other predetermined components, and a galvanized layer formed on at least one surface of the base steel plate. The base steel plate has an HA value and an HB that satisfy all of the following relational expressions, wherein HA is the average hardness of the surface layer that extends to a depth of 50 μm from the interface between the base steel plate and the galvanized layer, and HB is the average hardness of deep portions in excess of 50 μm from the interface. 50 ≤ HA ≤ 500 … (1) 50 ≤ HB ≤ 500 … (2) 0.5 ≤ HA/HB ≤ 0.9 … (3). |
