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Material
Physical Properties
Surface Properties
Inquiries
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| Aluminium oxide RAPAL |
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| Oxide ceramics are playing a leading role in modern ceramic applications and
aluminium
oxide is proving to be the favourite.
The outstanding features are high levels of hardness and wear resistance,
thermal conductivity,
electrical insulation even at high temperatures, corrosion-resistance against diluted
acids and caustic
solutions, and a low coefficient of friction surface.
RAPAL is our trade name for a range of oxide ceramic materials containing
high purity aluminia.
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Material |
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Aluminium oxide RAPAL is an oxide
ceramical
material on a base of high purity aluminias. By sintering the specifically developed
powders
at high temperatures, a dense, ceramic material approaching diamond hardness can
be created.
Components are produced in aluminium oxide by dry pressing, injection moulding,
extrusion
and isostatical pressing. Excellent dimensional tolerances and flatness can be
achieved by machining with diamond tools.
RAPAL has the essential characteristics of high hardness, strenght and abrasion
resistance and
reproducible sufrace finish. RAPAL is particularly appropriate for: Barings and seals
used in pumps and fittings, textile
thread guides, guides for wires and cables.
For many applications RAPOX is comparable with RAPAL even through its
hardness and
strength are slightly lower. One of its special features is its excellent sliding property.
Typical applications for RAPOX are: Ignitor insulation, wear resistant plates, sensor
bodies and pump rings.
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Physical properties |
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Detailed informations on our materials are provided in the pdf-format.
Simply click the links to download the selected file.
Note that for reading these files "Acrobat Reader" must be installed on your
computer.
Spread-sheet
RAPAL
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Surface properties |
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| natural surface
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Rz
Ra |
4,80 μm
0,68 μm |
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| polished surface |
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Rz
Ra |
2,44 μm
0,26 μm |
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Inquiries |
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For a detailed offer please send drawings including number of items, functional
areas
and tolerances.
In case of very low tolerances, parts need to be polished.
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