White fused alumina(WA) normal size range and grit.
Chemical, physical data
Symbol | Range of the grain | Chemical composition (%) | True density | Shape of grain | |
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| Al2O3 | Na2O |
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WA | F12-80 | ≥99.70 | ≦0.2 | ≥3.90 |
Equaled Volume |
| F90-150 | ≥99.70 | ≦0.2 |
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| F180-220 | ≥99.50 | ≦0.2 |
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| F230-400 | ≥99.50 | ≦0.25 |
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| F500-1200 | ≥99.0 | ≦0.25 |
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CHINA | JIS R6001-1998 | ANSI B74.10- | FEPA42GB-1984 | ||||||||||||
Grit | d50 value | GB2477-83 | GB/T2481.2-1998 | GB/T9258.1-2000 | Grit | d50 value(in µm) | Grit | d50 | Grit | d50 value(in µm) | |||||
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| Grit | Size | Grit | d50 value | Grit | d50 value |
| Sediment- | Electric |
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| Standard | Sedigraph
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| P240 | 58.5±2 | 240 | 60.0±4.0 | 57.0±3.0 |
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| P280 | 52.2±2 | 280 | 52.0±3.0 | 48.0±3.0 |
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F230 | 50.0±3.0 |
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| F230 | 53±3 | P320 | 46.2±1.5 | 320 | 46.0±2.5 | 40.0±2.5 | 240 | 53.5-50 | F230 | 53±3 | 50.0±3.0 |
F240 | 42.0±2.0 |
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| F240 | 44.5±2 | P360 | 40.5±1.5 | 360 | 40.0±2.0 | 35.0±2.0 |
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| F240 | 44.5±2 | 42.0±2.0 |
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| P400 | 35.0±1.5 | 400 | 34.0±2.0 | 30.0±2.0 | 280 | 44-40.5 |
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F280 | 34.5±1.5 | W63 | 63~50 | F280 | 36.5±1.5 | P500 | 30.2±1.5 | 500 | 28.0±2.0 | 25.0±2.0 | 320 | 36-32.5 | F280 | 36.5±1.5 | 34.5±1.5 |
F320 | 27.7±1.5 | W50 | 50~40 | F320 | 29.2±1.5 | P600 | 25.8±1.0 | 600 | 24.0±1.5 | 20.0±1.5 | 360 | 28.8-25.8 | F320 | 29.2±1.5 | 27.7±1.5 |
F360 | 21.6±1.5 | W40 | 40~28 | F360 | 22.8±1.5 | P800 | 21.8±1.0 | 700 | 21.0±1.3 | 17.0±1.5 | 400 | 23.6-20.6 | F360 | 22.8±1.5 | 21.6±1.5 |
F400 | 16.5±1.0 | W28 | 28~20 | F400 | 17.3±1.0 | P1000 | 18.3±1.0 | 800 | 18.0±1.0 | 14.0±1.0 | 500 | 19.7-16.7 | F400 | 17.3±1.0 | 16.5±1.0 |
F500 | 12.3±1.0 | W20 | 20~14 | F500 | 12.8±1.0 | P1200 | 15.3±1.0 | 1000 | 15.5±1.0 | 11.5±1.0 | 600 | 16-13 | F500 | 12.8±1.0 | 12.3±1.0 |
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| P1500 | 12.6±1.0 | 1200 | 13.0±1.0 | 9.5±0.8 |
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F600 | 9.0±1.0 | W14 | 14~10 | F600 | 9.3±1.0 | P2000 | 10.3±0.8 | 1500 | 10.5±1.0 | 8.0±0.6 | 800 | 12.3-9.8 | F600 | 9.3±1.0 | 9.0±1.0 |
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| P2500 | 8.4±0.5 | 2000 | 8.5±0.7 | 6.7±0.6 | 1000 | 9.3-6.8 |
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F800 | 6.3±1.0 | W10 | 10~7 | F800 | 6.5±1.0 |
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| 2500 | 7.0±0.7 | 5.5±0.5 |
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| F800 | 6.5±1.0 | 6.3±1.0 |
F1000 | 4.5±.08 | W7 | 7~5 | F1000 | 4.5±0.8 |
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| 3000 | 5.7±0.5 | 4.0±0.5 | 1200 | 6.5-4.5 | F1000 | 4.5±0.8 | 4.5±0.8 |
F1200 | 3.1±0.5 | W5 | 5~3.5 | F1200 | 3.0±0.5 |
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| 4000 |
| 3.0±0.4 |
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| F1200 | 3.0±0.5 | 3.1±0.5 |
F1500 | 2.0±0.4 |
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| 6000 |
| 2.0±0.4 |
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F2000 | 1.25±0.25 |
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| 8000 |
| 1.2±0.3 |
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F2500 | 0.77±0.2 |
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F3000 | 0.38±0.13 |
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Grit | Size Arrange(µ m) | |||
| China GB (GB/T 2481.1-1998) | ISO8486.1:1996 & FEPA42GB-1984 | JIS R6001-1998 | ANSI B74.12-1992 |
F4 | 5600~4750 |
| 5600~4750 | |
F5 | 4750~4000 |
| 4750~4000 | |
F6 | 4000~3350 |
| 4000~3350 | |
F7 | 3350~2800 |
| 3350~2800 | |
F8 | 2800~2360 | 2800~2360 | 2800~2360 | |
F10 | 2360~2000 | 2360~2000 | 2360~2000 | |
F12 | 2000~1700 | 2000~1700 | 2000~1700 | |
F14 | 1700~1400 | 1700~1400 | 1700~1400 | |
F16 | 1400~1180 | 1400~1180 | 1400~1180 | |
F20 | 1180~1000 | 1180~1000 | 1180~1000 | |
F22 | 1000~850 | 1000~850 | - | |
F24 | 850~710 | 850~710 | 850~710 | |
F30 | 710~600 | 710~600 | 710~600 | |
F36 | 600~500 | 600~500 | 600~500 | |
F40 | 500~425 | 500~425 | - | |
F46 | 425~355 | 425~355 | 425~355 | |
F54 | 355~300 | 355~300 | 355~300 | |
F60 | 300~250 | 300~250 | 300~250 | |
F70 | 250~212 | 250~212 | 250~212 | |
F80 | 212~180 | 212~180 | 212~180 | |
F90 | 180~150 | 180~150 | 180~150 | |
F100 | 150~125 | 150~125 | 150~125 | |
F120 | 125~106 | 125~106 | 125~106 | |
F150 | 106~75 | 106~75 | 106~75 | |
F180 | 90~63 | 90~63 | 90~63 | |
F220 | 75~53 | 75~53 | 75~53 | |
F240 | - | - | 75~53 |