METHOD OF MANUFACTURING A STEEL RAIL
摘要:
A steel rail includes: by mass%, higher than 0.85% to 1.20% of C; 0.05% to 2.00% of Si; 0.05% to 0.50% of Mn; 0.05% to 0.60% of Cr; P≤0.0150%; and the balance consisting of Fe and inevitable impurities, wherein 97% or more of a head surface portion which is in a range from a surface of a head corner portion and a head top portion as a starting point to a depth of 10 mm has a pearlite structure, a Vickers hardness of the pearlite structure is Hv320 to 500, and a CMn/FMn value which is a value obtained by dividing CMn [at.%] that is a Mn concentration of a cementite phase in the pearlite structure by FMn [at.%] that is a Mn concentration of a ferrite phase is equal to or higher than 1.0 and equal to or less than 5.0.
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