Microgrit size comparison chart between China, Japan, USA, Germany, Europe and International.
China GB 9258-88 |
Japan JIS (91) |
USA ANSI (97) |
Germany DIN (85) |
Europe FEPA (84) |
International ISO (96) |
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Grit |
Average |
Grit |
d50 Midian diameter |
Grit |
d50 Midian diameter |
Grit |
d50 Midian diameter |
Grit |
d50 Midian diameter |
Grit |
d50 Midian diameter |
W63 | 63~50 | 240 | 60.4±4.0 | P240 | 58.2±2 | ||||||
W50 | 50~40 | 280 | 52.0±3.0 | 240 | 53.5~50 | os53 | 53±3 | F230/53 | 53±3 | P280 | 52.2±2 |
W40 | 40~28 | 320 | 46.0±2.5 | os45 | 44.5±2 | F240/45 | 44.5±2 | P320 | 46.2±1.5 | ||
W28 | 28~20 | 360 | 40.0±2.0 | 280 | 44~40.5 | P360 | 40.5±1.5 | ||||
W20 | 20~14 | 400 | 34.0±2.0 | 320 | 36~32.5 | os37 | 36.5±1.5 | F280/37 | 36.5±1.5 | P400 | 35.0±1.5 |
W14 | 10~14 | 500 | 28.0±2.0 | 360 | 28.8~25.8 | os29 | 29.2±1.5 | F320/29 | 29.2±1.5 | P500 | 30.2±1.5 |
W10 | 10~7 | 600 | 24.0±1.5 | 400 | 23.6~20.6 | P600 | 25.8±1 | ||||
W7 | 7~5 | 700 | 21.0±1.3 | os23 | 22.8±1.5 | F360/23 | 22.8±1.5 | P800 | 21.8±1 | ||
W5 | 5~3.5 | 800 | 18.0±1.0 | 500 | 19.7~16.7 | os17 | 17.3±1 | F400/17 | 17.3±1 | P1000 | 18.3±1 |
W3.5 | 3.5~2.5 | 1000 | 15.5±1.0 | 600 | 16~13 | P1200 | 15.3±1 | ||||
W2.5 | 2.5~1.5 | 1200 | 13.0±1.0 | os13 | 12.8±1 | F500/13 | 12.8±1 | P1500 | 12.6±1 | ||
W1.5 | 1.5~1.0 | 1500 | 10.5±1.0 | 800 | 12.3~9.8 | P2000 | 10.3±0.8 | ||||
W1.0 | 1.0~0.5 | 2000 | 8.5±0.7 | 1000 | 9.3~6.8 | os9 | 9.3±1 | F600/9 | 9.3±1 | P2500 | 8.4±0.5 |
W0.5 | 0.5 and finer |
2500 | 7.0±0.7 | os7 | 6.5±1 | F800/7 | 6.5±1 | ||||
3000 | 5.7±0.5 | 1200 | 6.5~4.5 | os5 | 4.5±0.8 | F1000/5 | 4.5±0.8 | ||||
os3 | 3±0.5 | F1200/3 | 3±0.5 |