| abstract |
The invention provides high life bearing steel, comprising：0.96~1.03wt% of carbon, 0.15~0.35wt% of silicon, 0.25~0.45wt% of manganese, 1.4~1.6wt% of chromium, 0.05~0.09wt% of nickel, 0.02~0.08wt% of molybdenum, 0.007~0.030wt% of aluminium, 0.04~0.08wt% of copper, 0.002~0.030wt% of yttrium；Phosphorus is less than 0.01wt%, and sulphur is less than 0.008wt%, and titanium is less than 0.0025wt%, and oxygen is less than 0.0008wt%, and arsenic is less than 0.012wt%, and tin is less than 0.002wt%, and antimony is less than 0.005wt%, and lead is less than 0.002wt%, and calcium is less than 0.001wt%；Remaining composition is iron.The present invention is by strictly controlling the constituent content in bearing steel so that bearing steel has better performance. |