The continuous use temperature of MACOR® machinable glass ceramic is 800°C, and its peak temperature is 1000 °C. The coefficient of thermal expansion of MACOR® machinable glass ceramic readily matches most sealing glasses and metals. It exhibits zero porosity, is non-wetting and won’t deform, unlike ductile materials.
In addition, it is an excellent insulator at both high temperatures and high voltages, as well as over a range of frequencies. When properly baked out, it does not outgas in vacuum environments.
MACOR® machinable glass ceramic can be machined quickly and at low cost, and formed into complicated shapes and precision parts using ordinary metal working tools, and does not require post firing after machining. This prevents frustrating delays and post fabrication shrinkage, and means no expensive hardware or expensive diamond tools are required to meet specifications.
The Technical Ceramics business of Morgan Advanced Materials is an approved distributor of Corning MACOR® through its facility in Fairfield NJ USA.
MACOR characteristics include:
- Electrical resistivity
- Can withstand high temperatures up to 1000 °C
- High dielectric strength
- Non-shrinking with zero porosity
- Can be machined into complex shapes and precision parts easily and economically
- Tight tolerance capability
MACOR applications include:
- Hermetic Seals
- Sample holders for microscopes
- Spacers, windows and headers for microwave tube devices
- Supports and insulators for Vacuum Environment feed-throughs
- MACOR Feedthroughs
- Welding Nozzles
- Aerospace ComponentsFixtures