rail steel with an excellent combination of wear properties, rolling contact fatigue strength and weldability

摘要

patent summary: "rail steel with an excellent combination of wear properties, rolling contact fatigue strength and weldability". The present invention relates to a rail making steel, particularly slotted rail, having a hardness of at least 330 hv30, a tensile strength of at least 1000 mpa and a yield strength of at least 600 mpa comprising by weight%, - 0,70% to 0,85 carbon, - 0,65% to 1,00% of silicon, - 1,1% to 1,4% of manganese, - 0,07% up to 0.15% vanadium, - up to 0.008% nitrogen, - up to 0.025% phosphorus, - 0.008 up to 0.030% sulfur, - up to 2.5 ppm hydrogen, - up to 0.10% chrome, - at most 0.010% aluminum, - at most 20 ppm oxygen, - the remainder consisting of iron and unavoidable impurities. 21372854v1