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Holosphere - M

Oxide Analysis Formula Tolerance
CaO 0.05% -
K2O 0.80% 0.01
MgO 0.15% 0.01
Na2O 0.30% 0.01
TiO2 0.20% -
Al2O3 73.30% 1.00
SiO2 24.70% 0.57
Fe2O3 0.50% -
Oxide Weight 139.15
Formula Weight 139.15

Notes

A hollow sphere of mullite ceramic, fired at 1740C in sizes of 3.0-5.0mm, 1.5-3.0mm, 0.5-1.5mm. It has very low density, low thermal conductivity and high crushing strength. Its main use is in refractories, but it is also suitable as a bedding material for the firing of delicate ceramic objects of all types.

Refractoriness: 1875/1900C


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