RAIL STEEL WITH EXCELLENT COMBINATION OF WEAR PROPERTIES AND RESISTANCE TO THE FATIGUE OF CONTACT BY BEARING.

摘要

A high-strength perlithic steel rail with an excellent combination of wear properties and rolling contact fatigue resistance in which the steel consists of 0.88% to 0.95% carbon, 0.75% to 0.95% silicon, 0.80% to 0.95% manganese, 0.05% to 0.14% vanadium, up to 0.008% nitrogen, up to 0.030% phosphorus, 0.008% a 0.030% sulfur, at most 2.5 ppm of hydrogen, at most 0.10% of chromium, at most 0.010% of aluminum, at most 20 ppm of oxygen, the rest being iron and unavoidable impurities.