RAIL STEEL AND METHOD OF MAKING RAILS THEREFROM Russian patent published in 2024 - IPC C22C38/38 C22C38/60 C22C38/34 C22C38/28 C22C38/26 C22C38/32 C22C38/24 C22C38/22 C22C38/20 C22C38/58 C22C38/54 C22C38/50 C22C38/48 C22C38/46 C22C38/44 C22C38/42 C21D8/00 C21D9/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, namely to steel for making rails for railways, in particular for trains running on magnetic cushion or magnetic suspension. Rail steel contains the following elements, wt.%: 0.25 ≤ C ≤ 0.8, 1.0 ≤ Mn ≤ 2.0, 1.40 ≤ Si ≤ 2, 0.01 ≤ Al ≤ 1, 0.8 ≤ Cr ≤ 2, 0 ≤ P ≤ 0.09, 0 ≤ S ≤ 0.09, 0 ≤ N ≤ 0.09, optionally, at least one element selected from 0 ≤ Ni ≤ 1, 0 ≤ Mo ≤ 0.5, 0 ≤ V ≤ 0.2, 0 ≤ Nb ≤ 0.1, 0 ≤ Ti ≤ 0.1, 0 ≤ Cu ≤ 0.5, 0 ≤ B ≤ 0.008, 0 ≤ Sn ≤ 0.1, 0 ≤ Ce ≤ 0.1, 0 ≤ Mg ≤ 0.10 and 0 ≤ Zr ≤ 0.10, the rest is iron and unavoidable impurities. Microstructure of said steel includes in percentage area of (2–10)% of hypoeutectoid ferrite, the rest consists of pearlite, wherein pearlite has interplate distance of 100–250 nm.

EFFECT: steel has the required level of mechanical, electrical and magnetic properties.

15 cl, 4 tbl