High-strength martensitic stainless steel for high-speed railway turnout slide baseplate

The invention discloses high-strength martensitic stainless steel for a high-speed railway turnout slide baseplate. The martensitic stainless steel is composed of the following components of, in percentage by mass, 0.08% to 0.15% of C, less than or equal to 1.0% of Si, less than or equal to 1.0% of Mn, less than or equal to 0.03% of P, less than or equal to 0.03% of S, 12.5% to 14.5% of Cr, 3% to6% of Ni, 0.45% to 1.2% of Mo, 0.1% to 0.4% of Nb, 0.5% to 1.2% of W, 0.15% to 0.8% of V, 0.15% to 0.35% of composite rare earth, and the balance Fe. The martensitic stainless steel has the advantagesof low cost, good wear resistance, no rust, and good weldability, thermal cracking resistance and processing performance, and is suitable for the use of the high-speed railway turnout baseplate, so that the performance of the high-speed railway turnout baseplate is guaranteed, and the service life of the baseplate is prolonged. 一种高速铁路道岔滑床台板用高强度马氏体不锈钢，所述马氏体不锈钢的组成以及质量百分比为：C：0.08％-0.15％、Si：≤1.0％、Mn：≤1.0％、P：≤0.03％、S：≤0.03％、Cr