Keramicalia

Tel: +27 (0)11 412 3261 or +27 082 808 4757
We manufacture specialised refractories and ceramics.

Hollocast 4

Description; A bubble alumina castable for high temperature insulation. The bulk of the porosity is sealed in alumina bubbles.

Chemical analysis;
Al2 O3     85.0%
SiO2          8.0%
CaO          6.0%

Density; 1,25kg / litre.

Maximum service temperature; 1500°C

Cold crushing strength; ±8MPa.

Water addition for casting; +16%

Packaging; 10kg plastic bags.

Development no.  40330