Our Technical Ceramics offer high-temperature material solutions for extreme environments. Contact us to find out more about Ceramics and Graphite ranges.
MACOR can be joined or sealed to itself and to other materials using epoxy – metallised parts can be soldered, and brazing is used to join various metals to MACOR. Sealing glass produces a reliable tight seal which can be used for high vacuum environments. With a high maximum operating temperature (1000°C under no load, 800°C continuous load) and the flexibility of intricate shaping / precision during manufacture; MACOR offers a higher grade solution to your technical industry’s requirements.
Mykroy shares many properties with MACOR, acting as a highly versatile solution to expensive ceramics, being a more cost-effective option for less heat dependant solutions. High Dielectric Strength Low-Loss Factor Heat Resisting Non-Tracking, Low Expansion Co-Efficient ,Strong and Rigid; does not creep or deform unlike ductile materials, Low Thermal Conductivity; high temperature insulator, Electrical Insulator, especially at high temperatures, Excellent with high voltages and a broad spectrum of frequencies, Zero Porosity, Radiation Resistant, No outgas in vacuum environments when baked out.
Material | Approximate Weight |
| Silicon – SiO2 | 46% |
| Magnesium – MgO | 17% |
| Aluminium – AL2O3 | 16% |
| Potassium – K2O | 10% |
| Boron – B2O3 | 7% |
| Fluorine – F | 4% |
| MYKROY MM500 | MACOR | |
| Binder Phase/ Binder type | Mica flakes | Mica flakes |
| Colour | Light Grey | White |
| Typical Applications | Low thermal conductivity and electrical properties. Does not burn or outgas, a cheaper alternative to Macor for high temperature work. | Low thermal conductivity, radiation resistance, can also be metallised. A more expensive but versatile material than Mykroy. |
| Mechanical Properties | ||
| Flexural strength | 86.2 MPa | 94 MPa |
| Young Modulus (Modulus of Elasticity) | 82.7 GPa | 66.9 GPa |
| RT Compression | 345 MPa | 345 MPa |
| Open porosity | 0% | 0% |
| Density (g/cc mm2) | 2.7 | 2.52 |
| Hardness | 90 / 46 Hv | 250 Knopp |
| Thermal Properties | ||
| Thermal conductivity @ 25 deg C W/mK | 1.15 | 1.46 |
| Coeff Thermal Expansion (10^-6) | ||
| @ 25°C – 11.57 x 10^-6 | @ -100-25°C – 81 x 10^-7 | |
| @ 350°C – 10.53 x 10^-6 | @ 25-300°C – 90 x 10^-7 | |
| N/A | @ 25-600°C – 112 x 10^-7 | |
| N/A | @ 25-800°C – 123 x 10^-7 | |
| Specific heat at 25°C J/gK | 0.12 | 0.79 kJ/kg°C |
| Max Temp Oxidising / Inert | 500°C | 800°C – 1000°C |
| Electrical Properties | ||
| Dieletric constant, 25°C | 6.9 @ 1MHz | 6.01 @ 1KHz 5.64 @ 8.5GHz |
| Dielectric strength Kv/mm | 20.9 | 45 |
| RT resistivity (ohm.cm), 25°C | >10^14 | 10^17 |
At Thermic Edge, we pride ourselves on being at the forefront of the Vacuum Heating Technology Industry. We provide a complete service, our bespoke and versatile ranges give you the tools necessary for any inert, HV or UHV application.
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