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Brown Fused Aluminum Oxide powders are the perfect material specifically manufactured to be used for general abrasive applications in bonded abrasive tools, and lapping and polishing processes. While aluminum oxide has lower hardness and abrasive capacity than diamond, boron carbide, and silicon carbide, it is widely used for grinding ferrous materials, finishing tough and hard materials, filling up ceramic parts when the processing cost is important. Brown fused aluminum oxide is offered in macro and micro powder form, in both P and FEPA grades.
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Technical data
Chemical Composition
| GRIT SIZE |
Al2O3
mass % - min. |
Fe2O3 (Iron Oxide)
mass % - max |
CaO (Calcium Oxide)
mass % -max |
Titanium Oxide (TiO2)
mass %- max |
| F12-F20 |
95.0 |
0.3 |
0.3 |
1.8 |
| F24-F90 |
95.0 |
0.3 |
0.3 |
1.8 |
| F100-F120 |
95.0 |
0.4 |
0.4 |
1.8 |
| F150-F180 |
95.0 |
0.5 |
0.4 |
1.8 |
| F230-F280 |
96.0 |
0.4 |
0.5 |
1.8 |
| F320-F600 |
95.0 |
0.4 |
0.5 |
1.8 |
| F800-F1000 |
94.0 |
0.5 |
0.5 |
1.8 |
| F1200 |
94.0 |
0.5 |
0.7 |
1.8 |
| Application |
Grade |
Grit Size |
SiC mass % - min. |
Free C (Carbon) mass % - range |
Total C (Carbon) mass % - range |
S (Sulfur) mass % - range |
Moisture mass % - range |
| Metallurgical |
MG |
0-20mm |
88-92 |
3-6 |
30-33 |
0.1-0.2 |
1-3 |
Physical data
| Structure : |
|
Monocrystalline |
| Particle shape: |
|
Blocky, sharp edged |
| Color: |
|
Brown |
| Friability: |
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Tough |
| Knoop hardness (100 scale): |
|
2040 |
| Bulk density: |
|
ANSI B74.12-1988 |
| Specific gravity: |
|
3.99 |
Particle size distribution for available grits
Grading: FEPA Standard
| Grit size |
3% max.,
larger than,
um |
50% min.,
in size range,
um |
94% min.,
larger than,
um |
Grit size |
3% max.,
larger than,
um |
50% min.,
in size range,
um |
94% min.,
larger than,
um |
| F12 |
2000 |
N/A |
1400 |
F120 |
125 |
N/A |
90 |
| F14 |
1700 |
N/A |
1180 |
F150 |
106 |
N/A |
63 |
| F16 |
1400 |
N/A |
1000 |
F180 |
90 |
N/A |
53 |
| F20 |
1180 |
N/A |
850 |
F220 |
75 |
50.0-56.0 |
45 |
| F24 |
850 |
N/A |
600 |
F240 |
70 |
42.5-46.5 |
28 |
| F30 |
710 |
N/A |
500 |
F280 |
59 |
35.0-38.0 |
22 |
| F36 |
600 |
N/A |
425 |
F320 |
49 |
27.7-30.7 |
16.5 |
| F40 |
500 |
N/A |
355 |
F360 |
40 |
21.3-24.3 |
12 |
| F46 |
425 |
N/A |
300 |
F400 |
32 |
16.3-18.3 |
8 |
| F54 |
355 |
N/A |
250 |
F500 |
25 |
11.8-13.8 |
5 |
| F60 |
300 |
N/A |
212 |
F600 |
19 |
8.3-10.3 |
3 |
| F70 |
250 |
N/A |
180 |
F800 |
14 |
5.5-7.5 |
2 |
| F80 |
212 |
N/A |
150 |
F1000 |
10 |
3.7-5.3 |
1 |
| F90 |
180 |
N/A |
125 |
F1200 |
7 |
2.5-3.5 |
1 |
| F100 |
150 |
N/A |
106 |
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Note: JIS and P Standard graded powder is available on request
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Cutting Edge Technology Superabrasive and Abrasive Powders and Products
ISO 9002 registered • NQA1 (Nuclear Quality Assurance) certified
Copyright © 2002 UK Abrasives, Inc.
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