Brown fused alumina chemical composition from Chinese standard GB/T3043-2000.
| Code & Grit size | Chemical Composition (%) | |||
| AL2O3 | TiO2 | CaO (no more than) |
||
| A A-P1 |
4#～80# (P80) | 95.00～97.50 | 1.50~3.80 | 0.45 |
| 90#～150# (P100~P150) |
94.00~97.50 | |||
| 180#～220# (P180~P220) |
93.00～97.5 | |||
| 220#（P220） and finer |
≥92.00 | |||
| A-B A-P2 |
4#～80# (P8·P80) |
≥93.00 | 1.50～4.20 | - |
| 90#～200# (P100~P220) |
≥91.00 | |||
| 220#(P220) and finer |
≥90.00 | ≤4.50 | - | |
| A-S | 16#～220# | ≥92.00 | ≤4.20 | - |
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