Forged Grinding Balls
MATERIALS | CHEMICALS(%) | SURFACE HARDNESS | IMPACT | ||||
C | Si | Mn | Cr | P,S | HRC | J/cm2 | |
B3 | 0.58-0.66 | 1.6-1.9 | 0.65-0.8 | 0.7-0.9 | ≤0.03 | ≥60 | ≥12 |
B2 | 0.70-0.85 | 0.17-0.37 | 0.7-1.0 | 0.5-0.6 | ≤0.035 | ≥60 | ≥12 |
65MN | 0.62-0.7 | 0.17-0.37 | 0.9-1.2 | ≤0.25 | ≤0.035 | ≥55 | ≥12 |