Abstract: There is disclosed herein a steel alloy bearing having an inner race, an outer race and rolling elements comprising: at least one of said elements being made of alloy steel which constitutes from 10.0 to 18.0 wt % chromium and 0.05 to 0.30 wt % carbon, 0.10% to 2.0 wt % molybdenum, 0.15 to 1.0 wt % silicon, 0.20 to 1.5 wt % manganese, 0.8 to 1.2 wt % tungsten, 0.20 to 0.30 wt % vanadium, 0.2 to 1.0 wt % of nickel, and the remainder of said steel alloy being iron; and said at least one element having been carburized in a carbon atmosphere containing from 0.25 to about 0.40 % carbon potential.