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Crystallinity
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Amorphous, although during sintering, trace amounts of cristobalite can be formed at 1100 °C
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Organics
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None
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Metals
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None
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Grain size
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Silica granules ranging from 10–500 microns and sintered
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Density
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1400 kg/m3
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Porosity
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36 %
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Surface area
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10 m2/g (estimated)
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CTE
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6–8×10−7 °C−1
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Compressive strength
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10–15 MPa (estimated)
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Thermal stability
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Stable to 1500 °C, although above 1000 °C, cristobalite may form
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