White aluminum oxide is made with an electric furnace from high-grade alumina powder as main raw material. The resulting mineral has higher hardness and slightly lower toughness than brown fused aluminum oxide. Abrasive tools made of it are very suitable for grinding and polishing of cutting tools. Also it can be used in precision-castings, spraying and blasting, medium body for chemical industry applications, special ceramics and high-grade refractory materials.
Typical Chemical Analysis
|
Al2O3 min. (%) |
TiO2 |
Fe2O3 |
SiO2 |
MgO max. (%) |
CaO max. (%) |
Alkali Contents |
|
99.5 |
0.01 |
0.05 |
0.01 |
0.05 |
0.05 |
0.18 |
Typical Grit Sizes
|
FEPA Standard |
F240 |
F280 |
F320 |
F360 |
|
F400 |
F500 |
F600 |
F800 |
|
|
F1000 |
F1200 |
|
|
|
|
ANSI/ISO Standard |
12# |
14# |
16# |
20# |
|
24# |
30# |
36# |
46# |
|
|
54# |
60# |
70# |
80# |
|
|
90# |
100# |
120# |
150# |
|
|
180# |
220# |
|
|
Note: Other sizes are also available on request.