Macor® machinable ceramic
Final Advanced Materials provides Macor®, machinable high temperature ceramic. We offer boards, rods or machined parts according to your drawings.
Macor®machinable glass ceramic is recognized worldwide to be a major technological innovation, as well as a technical solution for a wide range of industrial applications. 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. As a result, Macor® is an outstanding engineering material which can quickly be designed into highly complex shapes, using conventional metalworking tools.
Macor® main characteristics
- Easily machinable
- Withstands high temperatures
- Low thermal conductivity
- Holds tight tolerances
- Electrical insulator
- Zero porosity and no outgassing
- Strong & rigid
- Highly polishable
- Radiation resistant
Macor® applications
- Constant and ultra-high vacuum environments
- Laser technology
- Semiconductor, electronic
- Aerospace, space
- Medical, laboratory equipment
- Fixtures
- Chemical
- Automobile
- Military
- Nuclear
Technical data
|
Properties |
Units |
Macor® |
|
Physical characteristics |
||
|
Density |
g/cm3 |
2.52 |
|
Porosity |
% |
0 |
|
Water uptake |
% |
0 |
|
Mechanical characteristics |
||
|
Hardness |
Rockwell A: 48 |
|
|
Compressive Strength |
N/mm2 |
345 |
|
Flexural Strength |
N/mm2 |
94 |
|
Modulus of Elasticity |
GPa |
66.9 |
|
Thermal characteristics |
||
|
Peak Temperature |
°C |
1000 |
|
Continuous Temperature |
°C |
800 |
|
Specific Heat at 20°C |
J/kg°K |
0.79 |
|
Thermal Conductivity at 100°C |
W/m°K |
1.46 |
|
Coefficient of Expansion 20 - 40°C |
10-6/°K |
9.3 |
|
20 - 600°C |
11.4 |
|
|
20 - 800°C |
12.6 |
|
|
20 - 1000°C |
/ |
|
|
Electrical characteristics |
||
|
Specific Resistivity at 20°C |
Ohm.cm |
1016 |
|
Dielectric Constant at 20°C |
at 1 KHz |
6.03 |
|
Loss Tangent |
at 1 KHz |
0.005 |
|
Dielectric Strength at 20°C |
kV/mm |
40 |
|
Chemical characteristics |
||
|
Corrosion resistance at 20°C |
Good |
|
|
Resistance to alkalis at 20°C |
Very good |
|
|
Properties |
Units |
Alumina silicate Raw |
Alumina silicate 1100 °C |
Alumina silicate 1300 °C |
Macor |
Glass ceramic Vitro 800 |
Machinable Alumina |
Machinable boron nitride |
Aluminium nitride Shapal MTM |
Machinable aluminium nitride |
|
Physical characteristics |
||||||||||
|
Density |
g/cm3 |
2.2 |
2.4 |
2.5 |
2.52 |
2.7 | 3.8 | 1.85 | 2.9 | 2.9 |
|
Porosity |
% |
1.5-2 |
0-0.5 |
0-0.5 |
0 |
0.096 | 10 | 14 | 0 | < 0.1 |
|
Water uptake |
% |
1.5-2 |
0-0.5 |
0-0.5 |
0 |
0.038 | 2-3.5 | / | 0 | 0 |
|
Mechanical characteristics |
||||||||||
|
Hardness |
Mohs: 2.5 |
Mohs : 5.5 |
Mohs : 7.5 |
Rockwell A: 48 |
Mohs : 4 | Mohs : 5 | Knopp: 4 kg/mm2 | Vickers: 3900 Mpa |
Vickers: 3750 Mpa | |
|
Compressive strength |
N/mm2 |
6 |
150 |
800 |
345 |
488 |
422 | 20 | 1200 | 1170 |
|
Flexural Strength |
N/mm2 |
12 |
50 |
80 |
94 |
108 | 267 | 50 | 300 | 300 |
|
Modulus of elasticity |
GPa |
/ |
/ |
/ |
66.9 |
65 | / | / | 190 | 180 |
|
Thermal characteristics |
||||||||||
|
Peak Temperature |
°C |
900 |
1100 |
1400 |
1000 |
800 | 1650 | 850 | 1000 | 1000 |
|
Continuous Temperature |
°C |
700 |
1100 |
1300 |
800 |
800 | 1650 | 850 | 1000 | 1000 |
|
Specific Heat 20 °C |
J/kg°K |
- |
- |
- |
0.79 |
- | - | 1.5 | - | - |
|
Thermal Conductivity at 100 °C |
W/m°K |
1.07 |
1.7 |
2.2 |
1.46 |
1.68 | 4.61 | 90 | 90 | 90 |
|
Coefficient of expansion |
||||||||||
|
20 - 40 °C |
- |
- |
- |
9.3 |
- | - | - | 4.4 | - | |
|
20 - 600 °C |
10-6/ °K |
- |
2.9-3.6 |
6-8 |
11.4 |
8.6 | - | - | 4.8 | 4.5 |
|
20 - 800 °C |
- |
- |
- |
12.6 |
- | - | - | 5.1 | - | |
|
20 - 1000 °C |
7-12 |
- |
4-10 |
- |
- | - | 0.57 | - | - | |
|
Electrical characteristics |
||||||||||
|
Specific Resistivity at 20 °C |
Ohm.cm |
1010 |
1012 |
1012 |
1016 |
1.8x1014 | 1014 | 1014 | 1012 | 1012 |
|
Dielectric Constant at 20 °C |
at 1 kHz |
- |
- |
6.1 |
6.03 |
6-7 | 9{@ 100 kHz} | 4 | 7.1 | 7.1 |
|
Loss Tangent |
at 1 kHz |
- |
- |
9x10-5 |
0.005 |
- | - | 0.0012 | 0.001 | / |
|
Dielectric Strength at 20 °C |
kV/mm |
8-10 |
6-7 |
12-17 |
40 |
>15 | 7.87 | 2 | 40 | 40 |
|
Chemical Characteristics |
||||||||||
|
Corrosion Resistance at 20 °C |
B |
B |
B |
B |
B | B | - | - | - | |
|
Resistance to alkalis at 20 °C |
B |
B |
B |
TB |
TB | B | - | - | - | |
We can provide a complete range of machinable ceramics according to your application's needs.