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Posted: 20 Dec 2020 18:30
by Archie
For gliding points, as well as for some ball bearings, different kinds of ceramic (and similar) materials are used: Zirconium Oxide (ZrO2), Silicon Nitride (Si3N4), Silicon Carbide (SiC), Synthetic Ruby (Al2O3:Cr), Aluminium Oxide (Al2O3) etc.

Some in-depth information about particular material properties could be found on manufacturer's web pages: ... mic-balls/ ... roperties/