White corundum is made under high temperature conditions above 2000 degrees. Through multiple processes including crushing, shaping and sieving, it excels in appearance and hardness as a widely used special material. White corundum is not only high in hardness, but also brittle in texture, strong in cutting power. It also performs well in insulation, self-sharpening, wear resistance and thermal conductivity. Meanwhile, it is resistant to acid and alkali corrosion and high temperature. Therefore, as a super hard material, white corundum possesses very excellent properties.
Typical physical properties
| Hardness |
9.0 mohs |
| Color |
white |
| Grain shape |
angular |
| Melting point |
ca. 2250 °C |
| Maximum service temperature |
ca. 1900 °C |
| Specific gravity |
ca. 3.9 g/cm3 |
| Bulk density |
ca. 3.5g/cm3 |
Typical physical analysis
|
White Fused Alumina Macro |
White Fuse Alumina powder |
| Al2O3 |
99.5 % |
99.5 % |
| Na2O |
0.35 % |
0.35 % |
| Fe2O3 |
0.1 % |
0.1 % |
| SiO2 |
0.1 % |
0.1 % |
| CaO |
0.05 % |
0.05 % |
AVAILABLE SIZES
White fused alumina Macro
| PEPA | Average grain size(μm) |
| F 020 | 850 – 1180 |
| F 022 | 710 – 1000 |
| F 024 | 600 – 850 |
| F 030 | 500 – 710 |
| F 036 | 425 – 600 |
| F 040 | 355 – 500 |
| F 046 | 300 – 425 |
| F 054 | 250 – 355 |
| F 060 | 212 – 300 |
| F 070 | 180 – 250 |
| F 080 | 150 – 212 |
| F 090 | 125 – 180 |
| F 100 | 106 – 150 |
| F 120 | 90 – 125 |
| F 150 | 63 – 106 |
| F 180 | 53 – 90 |
| F 220 | 45 – 75 |
| F240 | 28 – 34 |