This sharp angular abrasive is the second hardest mineral after diamond. It is fast cutting and does not contain free silica. It give a matt finish, or produces anchor or ‘tooth’ patterns on most metal surface and can be used economically in closed system environment.
Specification
APPLICATION
The range of application is limitless – the removal of sand from casting; surface preparation
prior to enamelling,plating or bonding; etching; descaling; deburring; cleaning moulds;glass
carving and decorative works in glass industry.
|
TYPICAL:
|
|||
|
PHYSICAL & CHEMICAL |
BROWN |
WHITE |
PINK |
|
PROPERTIES |
Al2O3 |
Al2O3 |
Al2O3
|
|
COLOUR |
Dark Brown |
White |
Pink |
|
PHYSICAL NATURE |
Hard & very tough |
Hard & frible |
Hard & tough |
|
PARTICLE SPECIFIC GRAVITY
|
3.94 |
3.90
|
3.92
|
| MELTING POINT |
2000°C
|
2050°C
|
2050°C
|
| HARDNESS MOH’S SCALE |
9.0
|
9.0
|
9.0
|
| TYPICAL CHEMCICAL ANALYSIS | |||
| Al2O3 |
95.40
|
99.30
|
99.0
|
| SiO2 |
0.70
|
0.15
|
0.15
|
| Fe2O3 |
0.30
|
0.10
|
0.10
|
| TiO2 |
3.00
|
–
|
–
|
| CaO |
0.60
|
0.10
|
0.10
|
| Na2O |
–
|
0.35
|
0.35
|
| Cr2O3 |
–
|
–
|
0.30
|
| ZrO2 + HFO2 |
–
|
–
|
–
|
Size
| GRADE |
MICRON SIZE
|
| Mesh 8 |
2360
|
| Mesh 10 |
2000
|
| Mesh 12 |
1700
|
| Mesh 14 |
1400
|
| Mesh 16 |
1180
|
| Mesh 20 |
850
|
| Mesh 24 |
740
|
| Mesh 30 |
600
|
| Mesh 36 |
480
|
| Mesh 40 |
425
|
| Mesh 46 |
326
|
| Mesh 60 |
250
|
| Mesh 80 |
180
|
| Mesh 90 |
166
|
| Mesh 100 |
150
|
| Mesh 120 |
125
|
| Mesh 150 |
100
|
| Mesh 180 |
83
|
| Mesh 220 |
68
|
| Other sizes are also available. | |
