Glass ceramic Vitro 800
Final Advanced Materials provides Vitro 800, machinable high temperature glass ceramic. We offer boards, rods or machined parts according to your drawings.
Machinable glass ceramic Vitro 800 presentation
Vitro 800 machinable glass ceramic is an economic alternative to Macor. It is available in bigger dimension, bars from Ø70 to 250 mm and boards up to thickness 60 mm.
Machinable glass ceramic 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
Machinable glass ceramic applications
- Constant and ultra-high vacuum environments
- Laser technology
- Semiconductor / Electronic
- Aerospace / Space
- Medical/ Laboratory equipment
- Fixtures
- Chemical
- Automobile
- Military
- Nuclear
We can provide a complete range of machinable ceramics according to your application's needs.
|
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 M™) |
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 |
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|
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 at 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 |
10-6/°K |
/ |
/ |
/ |
9.3 |
/ |
/ |
/ |
4.4 |
/ |
|
20 - 600°C |
/ |
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 |
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|
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 (@ 100kHz) |
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 |
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|
Corrosion resistance at 20°C |
B |
B |
B |
B |
B |
B |
/ |
/ |
/ |
|
|
Resistance to alkalis at 20°C |
B |
B |
B |
TB |
TB |
B |
/ |
/ |
/ |
|