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At One With Macor

Precision Ceramics & Corning At One With Macor -The Genuine Machinable Glass Ceramic …

For over 30 years, Precision Ceramics has been the principal UK Distributor for Macor, the genuine machinable glass ceramic.

As probably the most important and versatile material in the company’s broad portfolio of technical ceramics, Precision Ceramics have been almost completely responsible for the significant growth in sales of Macor in the United Kingdom and Europe, mainly brought about by the wide field of applications in which this unique material is now used.

But being at one with Macor is far from being an official distributor and whilst Precision Ceramics has wide experience in all aspects of this unique material – its uses, its applications and, most significantly, its unique properties – the company’s relationship with Corning is also quite unique.

It’s not so long ago that the manufacture of Macor was transferred from Corning’s plant in Danville, West Virginia, USA, to a new manufacturing facility in Fontainebleau, France. And despite the wide experience and skills of Corning’s elite team of production engineers in making the transition, it was Precision Ceramics who were invited to visit the plant to comment on the quality of the first production run and offer technical advice when required.

Corning is one of the world’s leading innovators in materials science. For more than 160 years, the company has applied its unparalleled expertise in specialty glass, ceramics, and optical physics to develop products that have created new industries and transformed people’s lives.

Corning succeeds through sustained investment in Research & Development, a unique combination of material and process innovation, and close collaboration with customers to solve tough technology challenges.

Corning’s businesses and markets are constantly evolving. Today, Corning’s products enable diverse industries such as consumer electronics, telecommunications, transportation, and life sciences.

They include:

  • Damage-resistant cover glass for smartphones and tablets
  • Precision glass for advanced displays
  • Optical fiber, wireless technologies, and connectivity solutions for high-speed communications networks
  • Trusted products that accelerate drug discovery and manufacturing
  • Emissions-control products for cars, trucks, and off-road vehicles

In one of our earliest projects, Precision Ceramics designed and developed several highly complex Macor components for British Aerospace’s Concorde engine management system. Here, the high use temperature, low thermal conductivity and excellent electrical insulator properties guaranteed the reliability and high performance required or such a specialist application.

Macor was also the chosen material in a similar application for BA’s Tornado GR4 all-weather attack aircraft which is still deployed by several RAF Squadrons throughout the United Kingdom.

Having excellent physical properties, high dielectric strength and electrical resistivity, Macor is non-porous, non-shrinking and withstands high temperatures while providing tight tolerance capability. It can be easily machined into the most complex shapes with conventional metalworking tools enabling fast turnaround from design to delivery and has substantially lower costs when compared with other technical ceramics.

Macor machinable glass is the perfect material for both prototyping and large production runs.

  • Can be machined with normal metalworking tools
  • Strong and rigid; unlike high temperature plastics, Macor will not creep or deform
  • Low thermal conductivity; useful high temperature insulator
  • Electric insulator, especially at high temperatures
  • Excellent with high voltages and a broad spectrum of frequencies
  • Does not require firing after machining
  • Continuous use temperature of 800°C; Peak temperature of 1000°C
  • Zero porosity
  • Won’t outgas in vacuum environment
  • Very tight machining tolerances of up to 0.0005in (0.013mm).
  • Excellent dimensional stability in a variety of environments (heat, radiation, etc.)
  • Can have a surface finish of less than 20µin. (0.5µm)Can be polished to a smoothness of 0.5µin
  • Radiation resistant
  • Can be thick or thin film metallized, brazed, epoxy and frit bonded
  • Co-efficient of thermal expansion readily matches most metals and sealing glasses

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