1.High purity and stability
2.Low thermal conductivity
3.Thermostability, longer life
4.High mechanical strength

Chemical Composition:

Al2O3 % :      98 min

SiO2  %:        0.2 max

Fe2O3%:        0.15 max

Physical Properties

Long-term service temperature:   1800°C

Stacking density:  0.5—1.0g/cm3

Grain size:   0.2--5mm                                              

The main crystalline phase:    a-- Al2O3                 

Picture1: mixed alumina hollow ball