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Macor® Machinable Glass Ceramic


SKU: MA8081E32 Categories: , Tags: , , ,

Macor® Machinable Glass Ceramic

Macor® machinable glass ceramic is a white, odourless, porcelain-like (in appearance) material composed of approximately 55% fluorophlogopite mica and 45% borosilicate glass. It has no known toxic effects; however, the dust created in machining can be an irritant. Macor® Machinable Glass Ceramic has a continuous use temperature of 800oC and a peak temperature of 1000oC. Its coefficient of thermal expansion readily matches most metals and sealing glasses. It is non-wetting, exhibits zero porosity, and unlike ductile materials, won’t deform. It is an excellent insulator at high voltages, various frequencies, and high temperatures. When properly baked out, it won’t outgas in vacuum environments. It can also be joined or sealed – both to itself and to other materials – in a number of ways; metalized parts can be soldered together and brazing has proven an effective method of joining the material to various metals; epoxy produces a strong joint, and sealing glass creates a vacuum tight seal. Even a straightforward mechanical joint is possible. It can be thick film metalized using metal inks, or thin film metalized by sputtering.


  • Precision Ceramics
  • Aerospace
  • Laser Technology
  • Automotive
  • Military
  • Nuclear

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