Alumina silicate machinable ceramic
Final Advanced Materials provides alumina silicate, machinable high temperature ceramic. We offer boards, rods or machined parts according to your drawings.
Aluminia silicate is a pyrophyllite rock. The ore that we have selected, features exceptional mechanical and thermal performances. After treatment at high temperature, the material acquires similar properties to those of known synthetic ceramics.
This material allows to solve with a remarkable implementation flexibility, problems that arise in laboratories and engineering consultants of all industries where ceramics are essential for their properties.
This material is machined with a conventional tooling, sawing, milling, drilling, turning. It’s a machinable ceramic, whose machinability is remarkable. The homogeneous structure of the mineral allows the use of standard tools, usually dedicated to metalworking. This feature allows it more particularly to manufacture prototypes and parts series in very tight tolerances. Very low and constant high temperature shrinkage (≤ 1%) authorizes the use of this material up to 1300°C, subject to compliance with a specific heat treatment procedure.
Alumina silicate Ceramic main charcateristics
- Dielectric and thermal insulating property
- Resistance to chemical agents
- Stability and shape accuracy
- Heat resistance up to 1300°C
- Excellent resistance to high vacuum (up to 10-8 torr)
We can provide alumina silicate
We offer the possibility to supply this natural ceramic in form of plates or bars which will allow you to realise ceramic parts with your own ways of machining. A detailed machining procedure,will help you to transform this material into a technical part of precision.
The alternative is to provide us a detailed plan, that we will investigate and we will send you as soon as possible a detailed manufacturing quotation.
Alumina silicate Ceramic applications
- Machining of components and toolings
- Realisation of prototypes
- Manufacturing of small ceramic series
- Coil cores
- Electrical insulator
- Template of assembly
- Injectors, nozzles
- Vacuum parts
- Thermal insulators, inductive insulators
- Template of brazing and welding
- Sensors
Technical data
|
Properties |
Units |
Alumina silicate raw |
Alumina silicate 1100°C |
Alumina silicate 1300°C |
|
Physical characteristics |
||||
|
Density |
g/cm3 |
2.2 |
2.4 |
2.5 |
|
Porosity |
% |
1.5 - 2 |
0 - 0.5 |
0 - 0.5 |
|
Water uptake |
% |
1.5 - 2 |
0 - 0.5 |
0 - 0.5 |
|
Mechanical characteristics |
||||
|
Hardness |
Mohs: 2.5 |
Mohs: 5.5 |
Mohs: 7.5 |
|
|
Compressive Strength |
N/mm2 |
6 |
150 |
800 |
|
Flexural Strength |
N/mm2 |
12 |
50 |
80 |
|
Modulus of Elasticity |
GPa |
/ |
/ |
/ |
|
Thermal characteristics |
||||
|
Peak Temperature |
°C |
900 |
1100 |
1400 |
|
Continuous Temperature |
°C |
700 |
1100 |
1300 |
|
Specific Heat at 20°C |
J/kg°K |
/ |
/ |
/ |
|
Thermal Conductivity at 100°C |
W/m°K |
1.07 |
1.7 |
2.2 |
|
Coefficient of Expansion 20 - 40°C |
10-6/°K |
/ |
/ |
/ |
|
20 - 600°C |
/ |
2.9 - 3.6 |
6-8 |
|
|
20 - 800°C |
/ |
/ |
/ |
|
|
20 - 1000°C |
7-12 |
/ |
4-10 |
|
|
Electrical characteristics |
||||
|
Specific Resistivity at 20°C |
Ohm.cm |
1010 |
1012 |
1012 |
|
Dielectric Constant at 20°C |
at 1 KHz |
/ |
/ |
6.1 |
|
Loss Tangent |
at 1 KHz |
/ |
/ |
9x10-5 |
|
Dielectric Strength at 20°C |
kV/mm |
8-10 |
6-7 |
12-17 |
|
Chemical characteristics |
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|
Corrosion resistance at 20°C |
Good |
Good |
Good |
|
|
Resistance to alkalis at 20°C |
Good |
Good |
Good |
|