| BALL SIZE → MATERIAL ↓ |
BELOW 5.00 MM | ABOVE 5.00 MM |
| AISI-E-52100 | 81 TO 85 HRA | 60 TO 67 HRC |
| AISI-420 | 75 TO78 HRA | 48 TO 54 HRC |
| AISI 420 B | 77 TO 79 HRA | 52 TO 56 HRC |
| AISI-420C | 78.5 TO 81 HRA | 55 TO 60 HRC |
| AISI-440C | 80 TO 83 HRA | 58 TO 63 HRC |
| AISI S2 | 78 TO 81 HRA | 55 TO 60 HRC |