Dinsmore & Shohl LLP
Bearing steel and manufacturing method therefor
A bearing steel according to an embodiment of the present disclosure includes, as a chemical composition: 0.51 to 0.56 wt % of carbon (C); 0.30 to 0.55 wt % of silicon (Si); 0.60 to 0.90 wt % of manganese (Mn); 0.025 wt % or less (excluding 0 wt %) of phosphorus (P); 0.008 wt % or less (excluding 0 wt %) of sulfur (S); 0.01 to 0.20 wt % of chromium (Cr); 0.08 wt % or less (excluding 0 wt %) of molybdenum (Mo); 0.25 wt % or less (excluding 0 wt %) of nickel (Ni); 0.01 to 0.20 wt % of vanadium (V); 0.20 wt % or less (excluding 0 wt %) of copper (Cu); 0.003 wt % or less (excluding 0 wt %) of titanium (Ti); 0.01 to 0.05 wt % of aluminum (Al); 0.0015 wt % or less (excluding 0 wt %) of oxygen (O); 0.001 wt % or less (excluding 0 wt %) of calcium (Ca); and iron (Fe) and unavoidable impurities as a remainder.
ILJIN GLOBAL CO., LTD
C B C C F C C F C F C F C C C C C C Y F C C F C C F C F F
C22C B21J C22C C21D F16C C21D C21D F16C C22C F16C C21D F16C C21D C22C C22C C21D C22C C22C Y02P F16C C22C C21D F16C C21D C21D F16C C21D F16C F16C
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Yoon Gil Seon Ho Oh Chul Chirl Soo
Choi Lee Kwon Shin