Alumina Type AL-30AA

Alumina Type AL-30AA

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AL-30AA is a high strength Al2O3 bonded material for use in corrosive or reducing conditions to 1500°C (2822°F).

Technical Data Sheet

Safety Data Sheet

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Description

ZIRCAR Ceramics’ Alumina Type AL-30AA is a medium- density, high-strength, uniformly rigid refractory structure composed of high-alpha polycrystalline alumina fibers and high-purity alumina binders. AL-30AA exhibits a fine, open-pore structure and is made to an optimum bulk density of 0.48 g/cc (30 pcf) which imparts very low thermal conductivity at elevated temperatures. AL-30AA exhibits a very high Al2O3 content giving it superior resistance to chemical attack and dimensional stability in industrial applications with continuous temperatures of 1500°C (2732°F) with intermittent use to 1600°C (2912°F).
AL-30AA is manufactured with a high fiber-to-binder ratio making it highly machinable to precise dimensional tolerances. It exhibits high electrical resistivity with high microwave and RF transparency at elevated temperatures. AL-30AA is pure white and exhibits high reflectance.
AL-30AA is pre-fired contains no organic binders and will produce no smoke or odors when heated. AL-30AA shows excellent resistance to chemical attack and is not affected by oil or water. It is, however, affected by hydrofluoric acid, phosphoric acid and strong alkalis.

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