Carbon steel containing vanadium and titanium and manufacture method thereof

The invention provides carbon steel containing vanadium and titanium and a manufacture method thereof. The manufacture method comprises the following steps of: primarily melting molten steel; when C content of the molten steel is 0.05-0.10 percent, P content is not more than 0.015 percent and S content is not more than 0.020 percent, tapping to a steel ladle; during the tapping, regulating the Sicontent of the molten steel to be 0.17-0.37 percent and the Mn content to be 0.70-1.00 percent, and regulating the oxygen content of the molten steel to be below 0.0020 percent; controlling the Als content of the molten steel to be 0.015-0.025 percent, wherein the Als represents acid dissolved aluminum; regulating the oxygen content of the molten steel to be below 0.0010 percent in a steel ladle refining furnace; regulating the Ti content of the molten steel to be 0.005-0.010 percent and the V content to be 0.02-0.04 percent; and regulating the C content of the molten steel to be 0.17-0.23 percent so that the carbon s