Macor®
Macor® Machinable Ceramic
Macor® is an outstanding engineering material which can quickly be designed into highly complex shapes, using conventional metalworking tools. Opening a wide range of possibilities, Macor® gives the performance of a technical ceramic with the versatility of a high-performance polymer, while providing the machinability of a soft metal.
Macor® remains continuously stable at 800 °C, with a maximum peak at 1,000 °C under no load, and unlike ductile materials, does not creep or deform. Its coefficient of thermal expansion readily matches most metals and sealing glasses. As an electric insulator, particularly at high temperatures, it is excellent at high voltages and a broad spectrum of frequencies. Macor® is a white, nonwetting, odourless and non-outgassing material that exhibits zero porosity. Macor® is also radiation resistant. Macor® is of a pure white and can be polished to a high gloss. It can be metallized, welded and bonded to a thick or thin epoxy film. Another main advantage of this unique material is that, even in small quantities, it can be manufactured in an economic way
Final Advanced Materials can supply ceramic rods or plates for your own use, but it is also possible for us to undertake the complete execution of your project.
Machining
Extremely machinable, Macor® offers tight tolerances capabilities, allowing complicated shape design (optimal performances up to 0.013 mm for dimensions, < 0.5 µm for finished surface and up to 0.013 µm for polished surface).
Applications of Machinable Macor®
- Ultra-High Vacuum Environments
- Laser Technology
- Equipment: Electronic, Medical, Automobile, Aerospace, Military, Nuclear
Examples of applications
Fields |
Examples |
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Ultra-High Vacuum Environments |
Insulator, coil support, vacuum feed-throughs |
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Constant Vacuum Applications |
Spacers, headers and windows for microwave tube devices, sample holders in field ion microscopes |
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Aerospace Industry |
retaining rings, mechanical joints on the orbital probes |
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Nuclear-Related Experiments |
Reference piece to measure dimensional change in other materials (Macor® is not dimensionally affected by irradiation) |
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Welding |
Nozzle on the tips of oxyacetylene torches (nonwetting characteristic of Macor®) |
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Fixtures |
electrode support and burner block in several industrial high heat, electrical cutting operations |
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Medical Equipment |
Medical components are integrated by Macor®‘s inertness |
Benefits of Machinable Macor®
- Easily machinable
- Withstands high temperatures
- Low thermal conductivity
- Holds tight tolerances
- Electrical insulator
- Zero porosity and no outgassing
- Strong and rigid Highly polishable
- Can be soldered to a wide range of material
- Radiation resistant
- Lead free
Available Products
Type |
Dimensions |
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Plate |
up to 300x300x55 mm |
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Rod |
round section: up to Ø55x300 mm square section: 60x60x300 mm |
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We also machine your parts according to your drawings. |
Technical Data of Machinable Macor®
The technical data table for Macor® machinable technical ceramics is available for download in the data sheet.
Chemical Properties of Machinable Macor®
Chemical Composition
Macor® can be considered unique as its composition comprise 55 % fluorophlogopite mica and 45 % borosilicate glass.
Composition |
% |
Composition |
% |
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SiO2 |
46 |
K2O |
10 |
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MgO |
17 |
B2O3 |
7 |
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Al2O3 |
16 |
F |
4 |
Chemical Durability
Standard |
Type |
Class |
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DIN 12111 / NF ISO 719 |
Water |
HGB2 |
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DIN 12116 |
Acid |
4 |
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DIN 52322 / ISO 695 |
Alkali |
A3 |
Weight Loss at 95 °C (mg/cm3)
Solution |
pH |
Time |
Gravimetric |
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5 % HCI |
0.1 |
24 hrs |
≈ 100 |
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0.002 N HNO3 |
2.8 |
24 hrs |
≈ 0.6 |
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0.1 N NaHCO3 |
8.4 |
24 hrs |
≈ 0.3 |
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0.02 N Na2CO3 |
10.9 |
6 hrs |
≈ 0.1 |
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5 % NaOH |
13.2 |
6 hrs |
≈ 10 |
Physical variables included in this documentation are provided by way of indication only and do not, under any circumstances, constitute a contractual undertaking. Please contact our technical service if you require any additional information.