| abstract |
high carbon steel rail with marked ductility. this invention relates to a high-carbon steel rail with marked ductility comprising 0.65 to 1.4 wt% carbon, 0.1 to 1.5 wt% silicon, 0.01 to 0.4% by weight of manganese, 0.1 to 1.5% by weight of chromium and 0.005 to 0.05% by weight of titanium, with additional margins for mo, nb, v, cu, ni, co, b , n, ca, mg, zr, al ew, in which the remainder comprises iron and the inevitable impurities, which exhibits a billet surface hardness of at least 3.25 hb and a microstructure that comprises at least 90% perlite in a depth between 2 and 20 mm below the rail billet surface. the invention also relates to the manufacturing process of the high carbon steel rail with marked ductility. |