Patent ID: 6582532
Filing Date: 2003-06-24
Classification: C21D,C22C,F16C,Y10S

Abstract:
A steel for a large-sized bearing consisting by mass percentage of 0.80 to 1.30% of C, more than 0.35% and not more than 0.80% of Si, 0.30 to 0.60% of Mn, 0.90 to 1.50% of Cr, the remainder being Fe and incidental impurities, and having quench-hardenability of HRC64 or more at J 1.5 mm, HRC63 to 66 at J 7 mm, HRCS7 to 50 at J 15 mm, HRC30 to 45 at J 20 mm and HRC28 to 38 at J 45 mm, wherein said hardenability is measured according to a method of hardenability test for steel specified in JIS G 0561.