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Alumina
Aluminas
(Al2O3) are generally more chemically resistant,
harder, stronger and more refractory than mullite.
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Grades |
Typical Uses |
Data
Sheets |
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998 99.8% alumina can be used at operating temperatures
to 1950°C in both oxidizing and reducing atmospheres. Tubes
have been evacuated to 10-7 Torr at 1500°C.
998 proves inert to hydrogen, carbon and refractory metals in
many severe situations. |
Noble metal thermocouple protection, furnace tubes, high temperature
vacuum furnaces, heat treating furnace rollers, radiant tubes,
laser tubes, corona treater tubes and ozone generators. |
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The datasheets are in PDF format. If you do not have the Acrobat
reader you may download it now. |
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AP35 99.0% alumina is a high purity body designed for the
extrusion manufacturing process. It offers good insulating characteristics
and high temperature capabilities. |
Corrosive environments and electrical insulation applications.
Noble metal thermocouples and diffusion furnace profile couples,
laser wave guides and RTD's. |
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AV30 96% alumina is an exceptionally tough alumina at an
economical price designed especially for wear resistant applications. |
Abrasive and corrosive environments. |
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Dimensional Tolerances:
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MATERIAL
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TO
MAXIMUM OUTSIDE DIAMETER OF:
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25.4mm
(1")
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114.3mm
(4 1/2")
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152.4mm
(6")
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228.6mm
(9")
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ALUMINA
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±5%
or ±.65mm
±(0.025") min.
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±4%
or ±1.27 mm
(±.050") min.
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±5%
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±6%
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Standard
camber tolerance is .794 mm (1/32")) per 305 mm (1 foot).
Standard strength tolerance is ±1.575 mm (1/16").
Tighter tolerances and non-catalog tolerances are provided
by quotation.
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