FEPA standard 43-1:2006. Macrogrits P12~P220 & Microgrits P240~P2500 for grains of fused aluminium oxide, silicon carbide and other abrasive materials for coated abrasives.
FEPA standard 43-1:2006. Macrogrits P12~P220 & Microgrits P240~P2500 for grains of fused aluminium oxide, silicon carbide and other abrasive materials for coated abrasives.
| MACROGRITS | MICROGRITS | |||
| Grit designation |
Mean diameter in μm |
Grit designation |
Mean grain size ds50-value in μm |
|
| P 12 | 1815 | P 240 | 58.5 ± 2 | |
| P 16 | 1324 | P 280 | 52.2 ± 2 | |
| P 20 | 1000 | P 320 | 46.2 ± 1.5 | |
| P 24 | 764 | P 360 | 40.5 ± 1.5 | |
| P 30 | 642 | P 400 | 35.0± 1.5 | |
| P 36 | 538 | P 500 | 30.2 ± 1.5 | |
| P 40 | 425 | P 600 | 25.8 ± 1 | |
| P 50 | 336 | P 800 | 21.8 ± 1 | |
| P 60 | 269 | P 1000 | 18.3 ± 1 | |
| P 80 | 201 | P 1200 | 15.3 ± 1 | |
| P 100 | 162 | P 1500 | 12.6 ± 1 | |
| P 120 | 125 | P 2000 | 10.3 ± 0.8 | |
| P 150 | 100 | P 2500 | 8.4 ± 0.5 | |
| P 180 | 82 | |||
| P 220 | 68 | |||
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