A pure and tough ceramic exhibiting hardness and vacuum tightness. Excellent in oxidising and reducing atmospheres. Fair thermal shock resistance. Used with R, S and B thermocouples.
Basic Composition: Al 2O 3 99.7%
Temperature Limits: 1750 ° C
International Standards: DIN VDE 0335 C799
Density: 3.9 g/cm³
Melting Range: 2072 ° C
Coefficient of Expansion: 8 x10-6 / ° C
Thermal Conductivity: 26 W/m ° C