Porous Alumina
This material, manufactured under the trade name Alsint porous, is a high purity alumina which remains porous due to its grain structure even after high temperature firing.
This results in a better thermal shock resistance than the impervious alumina. The refractoriness is high and similar to Alsint 99,7. Alsint porous is best used as a working tube or a muffle in furnace construction. It is also used for firing supports, props, crucibles and ignition dishes.
Typical characteristics include:
- High Temperature stability
- Excellent themal shock resistance
- Good Thermal insulation
Typical applications include:
- Furnace Muffles
- Firing Supports
- Firing Props
- Crucibles
- Ignition Dishes

