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Alumina aerogel is a newly developed material, similar in characteristics to silica aerogel. Its appearance is an optical translucent solid with a nanocrystalline structure. Alumina aerogel is available as monolithic solids shapes, granules, and in powder form.

Standard material is prepared with a density of 0.04 g/cm³ and is stable up to about 900° C. Preliminary tests indicate this material has a thermal conductivity of just 0.03 W/m°K.

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