1.Material:GCr15(DIN100Cr6,JIS SUJ2,AISI E52100),GCr15SiMn

2.Grade:G10-G1000

3.Diameter:3.1750mm-152.4000mm

4.Hardness:Less than 30mm is HRC61-66;Between 30mm and 50mm is HRC59-64;50mm is HRC 58-64.

5.Producing standards:GB/T308-2002

6.Quality certficate:GB/TI9001-2000---ISO9001:2000

7.Usebe used in various bearing and ball mill.

8.Advantage:good quality bearing steel balls,perfect services and fast delivery at competitive pricing.