High-strength non-quenched and tempered steel for automobile front axle and production method thereof

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to high-strength non-quenched and tempered steel for an automobile front axle and a production method of the high-strength non-quenched and tempered steel, and the high-strength non-quenched and tempered steel for the automobile front axle comprises the following chemical components in percentage by mass: 0.23 to 0.28 percent of C, 0.6 to 0.8 percent of Si, 1.8 to 2.1 percent of Mn, 0.80 to 1.20 percent of Cr, 0.02 to 0.03 percent of Nb, 0.02 to 0.03 percent of Ti, 0.010 to 0.030 percent of Al, 0.004 to 0.006 percent of B, less than or equal to 0.025 percent of P, 0.045 to 0.065 percent of S, 0.0003 to 0.0005 percent of lanthanide rare earth, 0.009 to 0.0130 percent of N and the balance of Fe and inevitable impurities. The alloy of the components of the high-strength non-quenched and tempered steel for the automobile front axle is low in cost, has the cost advantage and is beneficial to large-scale popularization and