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Table 2 Data sheet FS120 fused silica

From: The Mars Science Laboratory Organic Check Material

Composition SiO2 and <0.5 % NaO
Crystallinity Amorphous, although during sintering, trace amounts of cristobalite can be formed at 1100 °C
Organics None
Metals None
Grain size Silica granules ranging from 10–500 microns and sintered
Density 1400 kg/m3
Porosity 36 %
Surface area 10 m2/g (estimated)
CTE 6–8×10−7 °C−1
Compressive strength 10–15 MPa (estimated)
Thermal stability Stable to 1500 °C, although above 1000 °C, cristobalite may form