White Fused Alumina

White Corundum Density

　　Density is Divided Into Two, One Is The Accumulation Density, The Second Is True Density.

Accumulation Density

　　1.53~1.99g/cm3, The Accumulation Density Of Abrasive Is Related To The Particle Size Of Abrasive And The Grain Shape Of the Constituent Varieties Generally Speaking, The Bulk Density Of Coarse Abrasive Is Higher Than That Of Fine Abrasive, And The Bulk Density Of Mixed Abrasive Is Higher Than That of single Abrasive.

True density

　　3.95~4.0g/cm3, The true Density of Abrasive refers to the Quality of Abrasive contained in unit Volume (excluding the volume of open pores).

Basic Particle Size

　　45%~55%. The basic particle size is an important index to ensure the grinding effect. It should be controlled properly during production, But the production Speed may be slowed down.

Product advantages

　　1, Does not affect the color of the Workpiece

　　2. Sandblasting can be used in the process where iron residue is strictly prohibited

　　3, Micro powder level is very suitable for wet sandblasting and polishing operations

　　4. Fast processing speed and high quality;

　　5, The content of iron oxide is very low suitable for strictly prohibited iron residue sandblasting operation

　　6. Remove impurities by pickling

Physical properties

　　Crystal:Trigonal system

　　True density: 3.90 g/cm3

　　Bulk density: 3.60g/cm3

　　Hardness 1Mr Spectral hardness 2000 - 2200 Kg/mm2

　　2 Mohs hardness 10.0

　　Color: White

　　Melting point: 2250 C

　　Maximum service temperature: 1900 C

　　Specific heat (Cal/g. C): 0.26 (20 - 90 C)

　　Thermal conductivity: Room temperature is 900 C (Cal/cm3. sec. C)

　　Refractive index: e=1.760 w=1.768(Na line)

　　The resistivity: 30 C 300 C 900 C 1600 C(cm) 10、16、10、13、10、5、10、4

　　Linear expansion coefficient: (7 - 9)*10^-6/K (0 - 1600 C)

　　Chemical properties: Both sexes 1 .React with acid and slightly corrode in aqua regia and hydrofluoric acid 2. React with alkali only slightly with hot alkali solution

The physical and chemical indicators