steel:GCr15,high carbon steel, 100Cr6, SUJ2
Grade:G40
Hardness:HRc61-67
material:high chrome steel, 100Cr6,SUJ2
ball precision:G40
hardness:HRc 60-67
material:high chrome steel, 100Cr6,SUJ2
ball precision:G40
hardness:HRc 60-67
material:high chrome carbon steel, 100CrSiMn6-4,GCr15SiMn
grade:G60 or G40
hardness:HRc 60-67
Name:Magnetic Steel Ball
Material:GCr15,52100,SUJ2,100Cr6
Hardness:HRc62-67
Material:GCr15,52100,SUJ2,100Cr6
Hardness:HRc62-67
Surface:Lapping, Polished, Smooth
steel:GCr15,high chrome steel, AISI 52100, SUJ2
Grade:G40
Hardness:HRc61-67