MULLITE

Mullite offers many of the same properties as alumina, with a slightly better thermal shock properties.

Mullite is a good, low cost refractory material with a nominal composition of 3Al2O3•2SiO2. The raw materials are easily obtainable and are reasonably priced. It has excellent high temperature properties with improved thermal shock and thermal stress owing to the low thermal expansion, good strength and interlocking grain structure.

Key properties

• Good thermal shock and stress resistance
• Low thermal conductivity
• Good strength
• Wear resistant
• Usable to high temperatures

Applications:

• Protection tubes
• Furnace liners
• Electrical insulators

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