Alumino-Silicate Glass SiO2 57/Al2O3 36/CaO/MgO/BaO - Supplier Data by Goodfellow


Porous ceramics can be used as filters and for the controlled release of volatile chemicals. In this material, Alumino-Silicate particles are found in a glassy matrix. The resulting ceramic is used to remove solids from gases and liquids, and liquids such as oil and water from gases.

This grade removes particles down to 30 microns in diameter. It has a high cross breaking strength and so is able to withstand high differential pressure. It is resistant to hot and cold acids, except hydrofluoric acid and acid fluorides, and is also resistant to alkaline solutions up to pH9, as well as hot gases up to 900 °C.

Key Properties

The key properties of Alumino-Silicate are tabulated below.

Table 1. Key properties of Alumino-Silicate

Chemical Resistance
Acids - concentrated Fair
Acids - dilute Good
Alkalis Good
Physical Properties
Apparent porosity ( % ) 45
Density ( g cm-3 ) 2.65
Refractive index 1.54
Thermal Properties
Coefficient of thermal expansion @ 20-1000 °C ( x10-6 K-1 ) 5
Upper continuous use temperature ( °C ) 900

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