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Brown Fused Alumina: Brown Fused Alumina is compound or artificial corundum made from raw bauxite followed by different process like calcination, melting, crushing, & grading. It is the hard & most tough material after diamond with about 9 Mohs hardness, which make it the best for abrasive applications.
CapAlumina A: CapAlumina A is brown fused alumina abrasive (A) grade with highest purity, manufactured by Capstone Abrasives Company with industrial standards. To maintain the purity, we use high alumina content calcined bauxite, melting at around 2200°C temperature, which helps to improve the hardness as well as toughness in final goods.
CapAlumina Main Features
- 100% Non-metallic
- Maximum Purity
- Tougher & Harder
- More Durability
- Chemical Inertness
- High Density
- Abrasion Resistance
- Eco-Friendly & Non-Hazardous
| Compound | Guaranteed | Typical |
|---|---|---|
| Al2O3 | ≥ 93.50% | 95% |
| Fe2O3 | ≤ 0.50% | - |
| TiO2 | ≤ 3.50% | - |
| SiO2 | ≤ 1.50% | - |
| CaO | ≤ 1.50% | - |
| Other | ≤ 0.1% | - |
| Attribute | Analysis |
|---|---|
| Color | Dark Brown |
| Shape | Angular |
| Nature | Hard & Tough |
| Hardness | ≥ 9 Mohs |
| Sp. Gravity | 3.85-4.10 gm/cm³ |
| Bulk Density | 1.5-2.1 gm/cm³ |
| Melting Point | 2150°C |
| MM | BSS | ASTM | FEPA | MM | BSS | ASTM | FEPA |
|---|---|---|---|---|---|---|---|
| 4.75 | - | 4 | F4 | 0.425 | 36 | 40 | F40 |
| 4.00 | 4 | 5 | F5 | 0.355 | 44 | 45 | F46 |
| 3.35 | 5 | 6 | F6 | 0.300 | 52 | 50 | F54 |
| 2.80 | 6 | 7 | F7 | 0.250 | 60 | 60 | F60 |
| 2.36 | 7 | 8 | F8 | 0.212 | 72 | 70 | F70 |
| 2.00 | 8 | 10 | F10 | 0.180 | 85 | 80 | F80 |
| 1.70 | 10 | 12 | F12 | 0.150 | 100 | 100 | F90 |
| 1.40 | 12 | 14 | F14 | 0.125 | 120 | 120 | F100 |
| 1.18 | 14 | 16 | F16 | 0.106 | 150 | 140 | F120 |
| 1.00 | 16 | 18 | F20 | 0.075 | 200 | 200 | F150 |
| 0.850 | 18 | 20 | F22 | 0.063 | 240 | 230 | F180 |
| 0.710 | 22 | 25 | F24 | 0.053 | 300 | 270 | F220 |
| 0.600 | 25 | 30 | F30 | 0.045 | 350 | 325 | F240 |
| 0.500 | 30 | 35 | F36 | 0.037 | 440 | 400 | F280 |
| FEPA F Standard | FEPA P Standard |
|---|---|
| EN ISO 11126-7 | DIN ISO 8486-1 |
| DIN 8201-6 | MIL A-A-59316 |
| ANSI B74-12 | JIS R6001 |
| NF EN 4638 | D50TF5 Class A+D |
| DMR71-100 | NF L 06-829 |
| ABR 9-0160 | CSS 12 |
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