Rail

摘要

A rail pertaining to the present invention has a metal structure composed of, in terms of surface area%, 95% or more of a perlite structure in a range from the surface of the contour of the rail head to a depth of 30 mm, and the average grain diameter of perlite blocks in a traverse section is 120 to 200 μm in a range from the surface of the contour of the rail head to a depth of 20 to 30 mm.