High Chrome Grinding Balls_Oriental Casting and Forging …
1.High chromium ball quality index. The chromium content of high chromium balls is 10.0% or more. The carbon content is between 1.80% and 3.20%. According to national standards, the hardness of high chromium balls must be not less than 58hrc, and the impact value should be greater than or equal to 3.0j / cm2. If this hardness is high, chromium ...