| Nominal [ìm] |
Sieve [ìm] |
Class C [% retained] |
Class C [min % spherical] |
AllGlass [min % spherical] |
| 425-850 |
850 425 <425 |
0-10 80-100 0-20 |
70 |
80 |
| 250-425 |
425 250 <250 |
0-10 80-100 0-20 |
70 |
80 |
| 180-300 |
300 180 <180 |
0-10 80-100 0-20 |
80 |
85 |
| 150-250 |
250 150 <150 |
0-10 80-100 0-20 |
80 |
85 |
| 106-212 |
212 106 <106 |
0-10 80-100 0-20 |
80 |
85 |
| 75-150 |
150 75 <75 |
0-10 80-100 0-20 |
80 |
85 |
| 53-106 |
90 45 <45 |
0-10 80-100 0-20 |
80 | 85 |
| 45-90 |
90 45 <45 |
0-10 80-100 0-20 |
80 |
90 |
| 0-63 |
63 45 <45 |
0-5 0-20 80-100 |
80 |
90 |
Aerospace Peening Specifications AMS2431/6C and MIL PRF 9954B are available on request.