Patent ID: 9157131
Filing Date: 2015-10-13
Classification: B21B,C21D,C22C

Abstract:
1. A steel rail, comprising by weight 0.80-1.20% carbon, 0.20-1.20% silicon, 0.20-1.60% manganese, 0.15-1.20% chromium, 0.01-0.20% vanadium, 0.002-0.050% titanium, less than or equal to 0.030% phosphorus, less than or equal to 0.030% sulfur, less than or equal to 0.010% aluminum, less than or equal to 0.0100% nitrogen, 0.01-0.50% molybdenum, 0.002-0.050% niobium, 0.10-1.00% nickel, 0.05-0.50% copper, 0.002-0.050% a rare earth metal, 0.0001-0.1000% zirconium, and the balance comprising iron; wherein: wherein wt[Cr] is a weight percentage amount of chromium with respect to the weight of the steel rail, wt[Mn] is a weight percentage amount of manganese with respect to the weight of the steel rail, wt[Mo] is a weight percentage amount of molybdenum with respect to the weight of the steel rail, and wt[Nb] is a weight percentage amount of niobium with respect to the weight of the steel rail; and