Machinable Ceramics
Duratec ®
Duratec is a high-density versatile engineering material in Calcium silicate.
It is non-combustible and operates in electrical & thermal environments up to 1000°C. Available in 3 grades:
- Duratec 1000 exhibits low shrinkage
- Duratec 750 exhibits higher strength
- Duratec A is heat treated for high strength and low shrinkage.
The strength of Duratec is substantially maintained at maximum temperature, Duratec 750 actually increasing in strength at elevated temperatures.
Property |
Units |
Duratec 1000 |
Duratec 750 |
Duratec A |
Density |
Kg/m3 |
1400 |
1400 |
1300 |
Strength Flexural |
MPa |
16 |
23 |
25 |
Hardness |
Shore D |
70 |
80 |
85 |
Strength Compressive |
Mpa |
31 |
55 |
83 |
Max. Service Temp. |
°C |
1000 |
1000 |
1000 |
Arc Resistance |
ST273A |
- |
Cat 1 |
Cat. 2 |
Electrical Strength |
KV/m |
4700 |
7300 |
6100 |
Comparative Tracking Index |
|
600 |
>500 |
>500 |
Coefficient of thermal Exp. (100 –750°C) |
K-1 |
6.4 X 10-6 |
6.6 X 10-6 |
6.6 X 10-6 |
Loss on ignition |
% |
5.3 |
7.3 |
3.3 |
Thermal Conductivity (@ 750°C) |
W/mk |
0.37 |
0.49 |
0.49 |
(The data stated in the above table are typical average values and are not binding)
Duratec is used as a high quality asbestos replacement product in a wide range of industrial sectors. It can be machined to close tolerances/ high definition.
