Method for manufacturing a hot-rolled and coated steel sheet having a thickness comprised between 1.8 mm and 5 mm, said method comprising: - providing a steel semi-product having a composition comprising, by weight percent: 0.38% ≤ C ≤ 0.43% and 0.05% ≤ Mn ≤ 0.40% 0.10% ≤ Si ≤ 0.70% 0.015% ≤ Al ≤ 0.070% 0.001 % ≤ Cr ≤ 2% 0.25% ≤ Ni ≤ 2% 0.015% ≤ Ti ≤ 0.1% 0% ≤ Nb ≤ 0.06% 0.0005% ≤ B ≤ 0.0040% 0.003% ≤ N ≤ 0.010% 0.0001% ≤ S ≤ 0.005% 0.0001 % ≤ P ≤ 0.025%, the titanium and nitrogen contents satisfying the following relationship: Ti/N > 3.42, the carbon, manganese, chromium and silicon contents satisfying the following relationship: 2.6 C + Mn 5.3 + Cr 13 + Si 15 ≥ 1.1 %, the chemical composition optionally comprising one of several of the following elements: 0.05% ≤ Mo ≤ 0.65% 0.001 % ≤ W ≤ 0.30% 0.0005% ≤ Ca ≤ 0.005%, the balance of the composition consisting of iron and unavoidable impurities resulting from the smelting, - hot-rolling the steel semi-product with a final rolling temperature FRT comprised between 840°C and 1000°C, so as to obtain a hot-rolled steel product having a thickness comprised between 1.8 mm and 5 mm, then - cooling the hot-rolled steel product down to a coiling temperature T coil and coiling the hot-rolled steel product at said coiling temperature T coil to obtain a hot-rolled steel substrate, the coiling temperature T coil satisfying: 450°C ≤ T coil ≤ 495°C, - pickling the hot-rolled steel substrate, - coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating having a thickness comprised between 10 and 33 μm on each side of the hot-rolled steel sheet. - providing a steel semi-product having a composition comprising, by weight percent: 0.38% ≤ C ≤ 0.43% and 0.05% ≤ Mn ≤ 0.40% 0.10% ≤ Si ≤ 0.70% 0.015% ≤ Al ≤ 0.070% 0.001 % ≤ Cr ≤ 2% 0.25% ≤ Ni ≤ 2% 0.015% ≤ Ti ≤ 0.1% 0% ≤ Nb ≤ 0.06% 0.0005% ≤ B ≤ 0.0040% 0.003% ≤ N ≤ 0.010% 0.0001% ≤ S ≤ 0.005% 0.0001 % ≤ P ≤ 0.025%, the titanium and nitrogen contents satisfying the following relationship: Ti/N > 3.42, the carbon, manganese, chromium and silicon contents satisfying the following relationship: 2.6 C + Mn 5.3 + Cr 13 + Si 15 ≥ 1.1 %, the chemical composition optionally comprising one of several of the following elements: 0.05% ≤ Mo ≤ 0.65% 0.001 % ≤ W ≤ 0.30% 0.0005% ≤ Ca ≤ 0.005%, the balance of the composition consisting of iron and unavoidable impurities resulting from the smelting, 0.38% ≤ C ≤ 0.43% and 0.05% ≤ Mn ≤ 0.40% 0.10% ≤ Si ≤ 0.70% 0.015% ≤ Al ≤ 0.070% 0.001 % ≤ Cr ≤ 2% 0.25% ≤ Ni ≤ 2% 0.015% ≤ Ti ≤ 0.1% 0% ≤ Nb ≤ 0.06% 0.0005% ≤ B ≤ 0.0040% 0.003% ≤ N ≤ 0.010% 0.0001% ≤ S ≤ 0.005% 0.0001 % ≤ P ≤ 0.025%, 0.05% ≤ Mo ≤ 0.65% 0.001 % ≤ W ≤ 0.30% 0.0005% ≤ Ca ≤ 0.005%, - hot-rolling the steel semi-product with a final rolling temperature FRT comprised between 840°C and 1000°C, so as to obtain a hot-rolled steel product having a thickness comprised between 1.8 mm and 5 mm, then - cooling the hot-rolled steel product down to a coiling temperature T coil and coiling the hot-rolled steel product at said coiling temperature T coil to obtain a hot-rolled steel substrate, the coiling temperature T coil satisfying: 450°C ≤ T coil ≤ 495°C, - pickling the hot-rolled steel substrate, - coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating having a thickness comprised between 10 and 33 μm on each side of the hot-rolled steel sheet.