Customization: | Available |
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Natural Abrasive Type: | Natural Corundum |
Artificial Abrasive Type: | Natural Corundum |
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Physical Properties: | |
Specific Gravity | 3.9~4.3 |
Hardness (Mohs) | 7.5-8.0 |
Melting of natural grains | 1250℃/Meterial is a non-flammable solid |
Shape of natural grains | Sub-angular to Angular / Sharp angular |
Solubility in Water | Not soluble in water |
Chemical Composition: | |
SiO2 | 30% ~38% |
Al2O3 | 20%~22% |
Fe2O3 | 5%~10% |
FeO | 28%~38% |
MnO | 1% |
CaO | 2~7% |
MgO | 6.0-7.5% |
Other Characteristics: | |
Conductivity | <150 micro S/cm (Very low) |
Radioactivity | Not detectable above background |
Moisture Absorption | Not -hydroscopic inort |
Total Chlorides | < 25ppm |
Other sizes are also available on request. | <0.01% |