1 . A coated steel sheet for press hardening comprising: a steel sheet; an aluminum-based coating; and a zinc coating over the aluminum-based coating, the zinc coating having a thickness less than or equal to 1.1 m, the zinc coating being primarily zinc; the coated steel sheet having a weight composition as follows: 0.20% C 0.25%, 0.15% Si 0.35%, 1.10% Mn 1.40%, 0% Cr 0.30%, 0% Mo 0.35%, 0% P 0.025%, 0% S 0.005%, 0.020% Ti 0.060%, 0.020% Al 0.060%, and 0.002% B 0.004%, a balance of the composition being iron and unavoidable impurities resulting from processing.
2 . A coated steel sheet for press hardening comprising: a steel sheet; an aluminum-based coating; and a zinc coating over the aluminum-based coating, the zinc coating having a thickness less than or equal to 1.1 m, the zinc coating being primarily zinc the coated steel sheet having a weight composition as follows: 0.24% C 0.38%, 0.40% Mn 3%, 0.10% Si 0.70%, 0.015% Al 0.070%, 0% Cr 2%, 0.25% Ni 2%, 0.020% Ti 0.10%, 0% Nb 0.060%, 0.0005% B 0.0040%, 0.003% N 0.010%, 0.0001% S 0.005%, and 0.0001% P 0.025%, amounts of titanium and nitrogen satisfying Ti/N 3.42, and amounts of carbon, manganese, chrome, and silicon satisfying 2.6 C + Mn 5.3 + Cr 13 + Si 15 1.1 % , a balance of the composition being iron and unavoidable impurities resulting from processing.
3 . The coated steel sheet according to claim 2 , further comprising one or more of the following elements by weight: 0.05% Mo 0.65%, 0.001% W 0.30%, and 0.0005% Ca 0.005%.