Low-alloy and Corrosion-resistant Steel Having Improved Corrosion-resistant at Corrosive Environment and the Method Thereof

摘要

The present invention relates to a low-alloy corrosion-resistant steel for a vehicle and a method for manufacturing the same, and a low-alloy corrosion-resistant steel for a vehicle that improves corrosion resistance in a corrosive environment of a vehicle and reduces noise and vibration by controlling alloy components and plating of the steel and its manufacturing process; It relates to a manufacturing method thereof. According to the present invention for solving the problems of the prior art, 0.001 wt% to 0.1 wt% C, 0.01 wt% to 0.5 wt% Si, 0.1 wt% to 0.6 wt% Mn, more than 0 wt% 0.18 Up to wt% P, greater than 0 wt% and less than 0.02 wt% S, 0.001 wt% to 0.03 wt% Nb, greater than 0 wt% 0.03 wt% Cr, 0.05 wt% to 0.3 wt% Cu, 0.05 wt% % to 0.2% by weight of Ni, and the sum of the weights of Sn and Sb includes more than 0% by weight and 0.2% by weight or less, and provides a low-alloy corrosion-resistant steel for vehicles containing the remainder of iron and unavoidable impurities.