Macor®

Macor Glass Ceramic

MACOR® is a machinable glass ceramic manufactured by Corning Glass Works. Macor® offers designers many of the characteristics desired from ceramics, with the benefit that Macor® can be machined into complex precision parts while using ordinary machine tools, and Macor® requires no post firing after machining.

The key to Macor®'s machinability is its unique microstructure which consists of a highly interlocked array of plate-like mica crystals dispersed within an alumino-borosilicate Machined Parts From Macor Stockglass matrix. As machining occurs: cracks are deflected by the mica, the glass is pulverized, and the material is chipped out in extremely fine pieces, thus preventing catastrophic failure.

Machined parts from Macor stock

PROPERTIES

Macor® has a continuous use temperature of 800°C and it has a peak no load temperature of 1000°C. Its coefficient of thermal expansion is similar to most metals and sealing glasses, is nonwetting, exhibits zero porosity, and is extremely dimensionally stable. Macor® is an excellent electrical insulator, particularly at elevated temperatures, at high voltages and at varied frequencies. When properly baked out, Macor® will not outgas in vacuum environments.

TYPICAL APPLICATIONS:

  • Ultra-High Vacuum environments
  • Aerospace
  • Nuclear applications (Macor® is not affected by irradiation)
  • Electrical insulators at elevated temperatures
  • Laser anode caps
  • Semiconductor thermal chucks
  • IC test sockets
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Mica-Tron Products Corp. has the experience, equipment and facilities to handle all of your machined Macor® requirements. When you need the performance of a technical ceramic (for properties such as high use temperatures, electrical resistivity, zero porosity, or dimensional stability) and when your application demands a precise, complicated part with a quick turnaround time, Macor® may be the answer.

Mica-Tron's capabilities include CNC turning, CNC milling, and CNC grinding of Macor®. Our part size capability includes micromachining to parts the size of the largest slab of Macor® available.

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Tolerance capabilities are a function of part size and machining process. Without taking part geometry into account, it is impossible to accurately list tolerance capabilities. Rest assured that Mica-Tron's capabilities are unsurpassed and that we have routinely held tolerances that other fabricators have refused to handle.

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