Patent ID: 7559999
Filing Date: 2009-07-14
Classification: B60B,C22C

Abstract:
1. A railroad wheel steel having a pearlitic structure is comprised of: 0.65 to 0.80 wt. % carbon; 0.80 to 1.00 wt. % silicon; 0.85 to 1.15 wt. % manganese; 0.005 to 0.030 wt. % phosphorous; 0.10 to 0.25 wt. % chromium; 0.01 to 0.12 wt. % niobium; 0.050 to 0.150 wt. % nickel; 0.20 to 0.30 wt. % molybdenum; 0.10 to 0.30 wt. % vanadium; 0.005 to 0.040 wt. % sulfur with the balance being iron and incidental impurities.