Macor Machinable Glass Ceramic
Macor Machinable Glass Ceramic, Machined With Conventional
Metalworking Tools
Macor machinable glass ceramic has the versatility of a high
performance polymer, the machinability of a metal, and the
performance of an advanced technical ceramic. It is a hybrid
glass-ceramic and offers a unique combination of properties from
both families of materials. Macor is an excellent electrical and
thermal insulator, and offers good performance in high temperature,
vacuum, and corrosive environments.
One of the main advantages of Macor is that it can be machined with
conventional metalworking tools. This allows for significantly
faster turnarounds and substantially lower production costs when
compared with other technical ceramics, making it an excellent
material for both prototyping and medium-volume production runs.
Physical Properties |
Color | White |
Density | 2.58 g/cm3 |
Porosity | 0.09% |
Young’s Modulus | 65 GPa @ 25C° |
Rockwell Hardness A Scale | 40 |
Modulus of Rupture | 108 MPa |
Compressive Strength | 488 MPa |
Thermal Properties | |
Thermal Expansion | 8.6 ppm @ 100 – 600C° |
Thermal Conductivity | 1.68 W-mk @ 25C° |
Maximum No Load Temp. | 1000C° Short Term |
Maximum Long Term Temp. | 750C° Continuous |
Electrical Properties |
Volume Resistivity | >1014 0hm-cm |
Dielectric Strength | 40 KV/mm– AC/DC @ 1mm |
Loss Tangent | 4 x 10-3 @ 1 KHz |
7 x 10-3 @ 8.5 KHz |
MACOR applications include:
• MACOR Feedthroughs
• Hermetic Seals
• Insulators and supports for Vacuum Environment feed-throughs
• Spacers, headers and windows for microwave tube devices
• Sample holders for microscopes
• Aerospace Components
• Welding Nozzles
• Fixtures
• Medical Equipment
MACOR characteristics include:
• Zero porosity and non-shrinking
• High dielectric strength
• Electrical resistivity
• Withstands high temperatures up to 1000ºC
• Tight tolerance capability
• Easily and economically machined into complex shapes and
precision parts
