Macor is an outstanding engineering material and is machinable with ordinary metalworking tools. Macor is also a problem solving material combining the performance of a technical ceramic with the versatility of a high performance plastic.
Macor has a high use temperature (800°C continuous to 1,000°C peak). It has a low thermal conductivity and is a useful high temperature insulator as well as an excellent electrical insulator. Macor has no porosity and when properly baked out, will not outgas. It is strong and rigid and, unlike high temperature plastics, will not creep or deform. Macor is also radiation resistant.
Macor is pure white and can be highly polished. It can be thick or thin film metallised, brazed and epoxy bonded. Another major advantage of this unique material is that, even in small quantities, components are economical to manufacture.
Macor is now manufactured exclusively in France by Corning Incorporated and Precision Ceramics is the UK’s principal distributor for this unique machinable glass ceramic.
The Thermal Expansion of Macor detailed in the graph below was derived from laboratory tests performed by Corning on sample quantities. Actual characteristics of production lots may vary.