STEEL FOR WHEEL Russian patent published in 2015 - IPC C22C38/38 C22C38/24 

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy, namely to steel for rail transport wheel manufacturing. Steel contains the following elements, wt %: C 0.65 - 0.84%, Si 0.02 - 1.00%, Mn 0.50 - 1.90%, Cr 0.02 - 0.50%, V 0.02 - 0.20%, S: 0.04% or less, O - 0.2% Mo if required, the rest is Fe and impurities. Steel contains the following components as impurities: P 0.05 wt % or less, Cu 0.20 wt % or less, and Ni 0.20 wt % or less. The following component ratios are to be maintained: Fn1=34≤2.7+29.5×C+2.9×Si+6.9×Mn+10.8×Cr+30.3×Mo+44.3×V=34x43, and Fn2=exp(0.76)×exp(0.05×C)×exp(1.35×Si)×exp(0.38×Mn)×exp(0.77×Cr)×exp(3.0×Mo)×exp(4.6×V)≤25.

EFFECT: high wear resistance, fatigue resistance in rolling contact area and chipping strength of steel, ensuring long operational life of wheel.

2 cl, 16 dwg, 4 tbl