Alumina Characteristics
99.7% alumina or more is distinguished by its good plasma resistance, high purity and wear resistance.
These wares are highly refractory, meant for use in reducing and oxidizing atmospheres. It is inert in hydrogen and carbonaceous atmospheres and offers high resistance to alkalis and other fluxes. Suitable for glass melting, including borosilicate glass.
Recommended for use with refractory metals such as Molybdenum, Platinum, Rhodium, Tungsten, Tantalum and Iridium. The temperature change rate for high-alumina labware should not exceed 150°C per hour.
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Chemical Analysis: Al2O3 [%] 99.8 (99.7) SiO2 [%] 0.015 (0.05)
MgO [%] 0.04 (0.08) Na2O [%] 0.03 (0.03) Fe2O3 [%] 0.015
(0.015) CaO [%] 0.01 (0.03)Density of 99.7% alumina: 3.922 g/cm³
Maximum operating temperature without load: 1750°C
Colour: Ivory
Flexural strength (MOR) : 493.4 MPa
Hardness (Moh’s Scale) : +9
Hardness (Rockwell scale) : 84
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PESTLE AND MORTAR
99.5% alumina mortar, glazed outside and unglazed inside, supplied with an oversized pestle.
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CRUCIBLEHigh form, Low form
Unglazed 99.7% alumina crucible, for use at a maximum temperature of 1750°C.
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CRUCIBLECylindrical form
Unglazed 99.7% alumina crucible, for use at a maximum temperature of 1750°C.
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Combustion Boat99.7% Alumina
Made from 99.7% pure aluminium oxide. Highly refractory and resistant to alkalis and other fluxes. Maximum temperature of use: 1750°C.
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