SiC Particle Sizes
Exceeding the Standard
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PARTICLE SIZES FOR CARBOREX®
Grit size to micron comparison chart
This grit chart is designed to give a general guideline for correlating FEPA, ANSI and JIS grit sizes to approximate micrometer sizes of the grit sizes.*
FEPA |
| D50 |
|
F 230 | 82 | 53 +/-3 | 34 |
F 240 | 70 | 44.5 +/-2 | 28 |
F 280 | 59 | 36.5 +/-1.5 | 22 |
F 320 | 49 | 29.2 +/-1.5 | 16.5 |
F 360 | 40 | 22.8 +/-1.5 | 12 |
F 400 | 32 | 17.3 +/-1.5 | 8 |
F 500 | 25 | 12.8 +/-1 | 5 |
F 600 | 19 | 9.3 +/-1 | 3 |
F 800 | 14 | 6.5 +/-1 | 2 |
F 1000 | 10 | 4.5 +/-0.8 | 1 |
F 1200 | 7 | 3 +/-0.5 | 1 (at 80%) |
F 1500 | 5 | 2 +/-0.4 | 0.8 (at 80%) |
F 2000 | 3.5 | 1.2 +/-0.3 | 0.5 (at 80%) |
ANSI | Maximum | Average | Minimum |
8 | 3300 | 2210 | 1650 |
10 | 2667 | 1854 | 1397 |
12 | 2286 | 1600 | 1143 |
14 | 1905 | 1346 | 940 |
16 | 1650 | 1092 | 787 |
20 | 940 | 1346 | 660 |
24 | 1092 | 686 | 457 |
30 | 813 | 559 | 356 |
36 | 762 | 483 | 305 |
46 | 559 | 356 | 241 |
54 | 496 | 305 | 203 |
60 | 406 | 254 | 165 |
70 | 330 | 203 | 127 |
80 | 292 | 165 | 102 |
90 | 241 | 145 | 89 |
100 | 203 | 122 | 63 |
120 | 165 | 102 | 50 |
150 | 140 | 89 | 38 |
180 | 114 | 76 | 25 |
220 | 102 | 63 | 20 |
240 | 85 | 50 | 25 |
280 | 70 | 39 | 19 |
320 | 60 | 31 | 14 |
400 | 45 | 22 | 11 |
500 | 40 | 19 | 10 |
600 | 35 | 16 | 9 |
700 | 32 | 14 | 7 |
800 | 30 | 12 | 5 |
900 | 23 | 9 | 3 |
1000 | 23 | 7 | 2 |
CF1 | 95 | 48 | 22 |
F | 77 | 40 | 18 |
FF | 67 | 33 | 14 |
FFF Coarse | 55 | 25 | 11 |
FFF | 45 | 19 | 10 |
FFFF | 35 | 11 | 4 |
JIS Grit Size | D3% Max(micrometer) | D50 | D94% Min (micrometer) |
240 | 103 | 57 +/-3 | 40 |
280 | 87 | 48 +/-3 | 33 |
320 | 74 | 40 +/-2.5 | 27 |
360 | 66 | 35 +/-2 | 23 |
400 | 58 | 30 +/-2 | 20 |
500 | 50 | 25 +/-2 | 16 |
600 | 43 | 20 +/-1.5 | 13 |
700 | 37 | 17 +/-1.3 | 11 |
800 | 31 | 14 +/-1 | 9 |
1000 | 27 | 11.5 +/-1 | 7 |
1200 | 23 | 9.5 +/-0.8 | 5.5 |
1500 | 20 | 8 +/-0.6 | 4.5 |
2000 | 17 | 6.7 +/-0.6 | 4 |
2500 | 14 | 5.5 +/-0.5 | 3 |
3000 | 11 | 4 +/-0.5 | 2 |
4000 | 8 | 3 +/-0.4 | 1.3 |
6000 | 5 | 2 +/-0.4 | 0.8 |
8000 | 3.5 | 1.2 +/-0.3 | 0.6 (at 75%) |
*This chart is presented in good faith only as a approximation for correlating standard grit sizes to micron sizing. Washington Mills makes no warranty of exact measurements.
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