bearing steel round bar GCr15/52100: C:0.95~1.05, Si:0.15~ ... bearing steel round bar GCr15/52100Specification :1,Technic:Forged,ESR ,Hot rolled2,Material:GCr15,G20CrMo,G20CrNi2Mo,9Cr18,9Cr18Mo,Cr4Mo4V,ASTM 52100, ... in accordance with customer's requirement Best lion provide bearing steel with bright and black surface,bars can be ... 50max0.025max0.0250.90-1.20max 0.25 bearing steel round bar GCr15/52100