CAST STEEL, PREPARATION METHOD FOR CAST STEEL AND USE OF CAST STEEL

摘要

A cast steel, a preparation method for the cast steel and a part used in the railway field prepared using the cast steel. The cast steel comprises, by mass percentage: 0.12% to 0.22% of carbon, 0.3% to 0.6% of silicon, 0.8% to 1.1% of manganese, less than or equal to 0.020% of phosphorus, less than or equal to 0.020% of sulfur, 0.3% to 0.5% of chromium, 0.35% to 0.5% of nickel, 0.02% to 0.06% of niobium, the balance being iron and unavoidable impurities.