Hot Press Forming Plated Steel Sheet Having Excellent Impact Property, Hot Press Molding Member, And Manufacturing Method Thereof

This plated steel sheet for hot press forming comprises a base steel sheet and an Al-Si plated layer. The base steel sheet consists of 0.15-0.4% C, 0.05-1.0% Si, 0.6-3.0% Mn, 0.001-0.05% P, 0.0001-0.02% S, 0.01-0.1% Al, 0.001-0.02% N, 0.001-0.01% B, 0.01-0.5% Cr, 0.01-0.05% Ti, and balance Fe, optionally including 0.01-0.5% total Mo, Nb, and V. The plated layer contains 6-12% Si, 1-4% Fe, and balance Al. In the surface layer part (0-200 µm depth), the carbon-depleted layer (carbon content $\le$ 50% of average carbon $C_0$) is $\le$ 5 µm thick. The ratio of the