White Corundum
Al2O3%>99
Grinding ability, heat a small
high efficiency
acid and alkali corrosion
White Corundum
White Corundum is based on high-quality aluminum oxide powder as raw material, formed by the crystallization of fused refining, high purity, self-sharpening, good acid and alkali corrosion, high temperature thermal stability performance, it is slightly higher than the brown corundum hardness, toughness is slightly lower, high purity , self-sharpening good grinding ability, heat a small, high efficiency, acid and alkali corrosion, high temperature thermal stability. Made with its abrasive for grinding high-carbon copper, high-speed steel.
Physical Indicators
fuction | Specifications | Chemical composition % | Magnetic material % | ||||
Al2O3 | Na2O | SiO2 | CaO | ||||
Abrasive | F | 12#—80# | ≥99.0 | ≤0.5 | — | ≤0.4 | ≤0.003 |
90#—150# | ≥98.5 | ≤0.6 | ≤0.003 | ||||
180#—240# | ≥98.2 | ≤0.7 | — | ≤0.4 | ≤0.002 | ||
W | 1μm -63μm | ≥97.5 | ≤0.8 | ≤1.0 | ≤0.5 | ≤0.001 | |
Refractory | Sand | 0-1mm | ≥99.0 | ≤0.5 | — | ≤0.4 | ≤0.003 |
Fines | 180#—0 | ≥98.5 |
| ≤0.3 | ≤0.5 | ≤0.001 | |
Item | Indicators |
color | Pure white |
Crystal | Trigonal system |
Hardness | ≥9.0 |
melting point (C) | 2250 |
The maximum temperature(C) | 1900 |
True Density(g/cm3) | ≥3. 90 |
Linear expansion coefficient (0—1600C) | 7—9 |
