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Physical Properties: | ||
Color | White | |
Crystal form | Triangal crystal system | |
Mohs hardness | 9.0-9.5 | |
Micro hardness | 2000 - 2200 Kg/mm2 | |
Melting point (℃) | 2250 | |
Maximum operating temperature (℃) | 1900 | |
True density | 3.90 g/cm3 | |
Bulk density | 1.5-1.99 g/cm3 |
Chemical Composition Standards: | ||||||||
Code and Size Range | Chemical Composition % | |||||||
Al2O3 | SiO2 | Fe2O3 | Na2O | |||||
F12——F80 | ≥99.50 | ≤0.10 | ≤0.05 | ≤0.30 | ||||
F90——F150 | ≥99.50 | ≤0.10 | ≤0.05 | ≤0.30 | ||||
F180——F220 | ≥99.50 | ≤0.10 | ≤0.05 | ≤0.30 | ||||
#240—#3000 | ≥99.50 | ≤0.10 | ≤0.03 | ≤0.22 | ||||
#4000—#12500 | ≥99.50 | ≤0.10 | ≤0.05 | ≤0.25 |