| La especificación | % | Fracción de masa de material magnético% | |||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | ||||
| BFA | F | 4#80# | ≥95 | ≤0.3 | ≤1.2 | >2.4 | ≤0,05 |
| 90#150# | ≥94 | ≤0,03 | |||||
| 180#240# | ≥93 | ≤0.3 | ≤1.2 | >2.4 | ≤0,02 | ||
| P | 8#80# | ≥ 95,0 | ≤0.3 | ≤1.5 | ≤3.0 | ≤0,05 | |
| 100#150# | ≥ 94,0 | ≤0,03 | |||||
| 180#-220# | ≥ 93,0 | ≤0.3 | ≤1.5 | ≤ 3,5 | ≤0,02 | ||
| W | 1#-63# | ≥ 92,5 | ≤0.5 | ≤1.8 | ≤4.0 | - | |
| El tamaño | B.D.(g/cm 3 ). | El tamaño | B.D.(g/cm 3 ). | El tamaño | B.D.(g/cm 3 ). |
| 12 | 2.02-2.10 | 36 | 90 | 1.64-1.76 | |
| 14 | 2.00-2.07 | 40 | 1.83-1.93 | 100 | 1.62-1.74 |
| 16 | 1.97-2.04 | 46 | 1.76-1 .88 | 120 | 1.61-1,73 |
| 20 | 1.96-2.02 | 54 | 1.75-1.87 | 150 | 1.60-1.72 |
| 22 | 1.95-2.01 | 60 | 1.70-1.82 | 180 | 1.58-1.68 |
| 24 | 1.90-2.00 | 70 | 1.68-1,80 | 220 | 1.56-1.67 |
| 30 | 1.88-1.98 | 80 | 1.66-1.78 | 240 | 1.56-1 .72 |