Duratec®
Duratec® is available in 3 different grades: 750; 1000 and A. Duratec® is a calcium silicate technical ceramic and is totally asbestos free. The range is ideally suited for high temperature use in thermal and electrical insulation.
Key Features
- Duratec 750® - High strength; excellent electrical performance and arc resistance
- Duratec 1000® - Excellent machinability and thermal stability
- Duratec A®- Further strengthened and stabilised. Ideal for arc resistant applications
- Temperature to 1000ºC
- Excellent surface and volume resistivity
- Excellent tracking resistance
- Excellent strength over temperature range
- Machinable to very close tolerances
- Stable to alkali media, reactive to acid media.
Applications:
- Arc shields in switchgear
- General electrical insulation
- Furnace element supports
- High strength thermal and electrical separators
Availability:
| Sheet Size (mm): |
1500x1220 |
| Thickness (mm): |
6, 10, 12, 15, 20, 25, 30, 40, 50, 75 |
A full Machining Service is also available.
Typical Product Performance
|
UOM |
750 |
1000 |
| Mechanical Properties |
|
|
|
| Bulk Density |
Kg/m³ |
1400 |
1400 |
| Flexural Strength |
MPa |
23 |
16 |
| Hardness |
Shore D |
80 |
70 |
| Compressive Strength at 10% compaction |
MPa |
55 |
31 |
| Thermal Properties |
|
|
|
| Max Service Temp |
ºC |
1000 |
1000 |
| Thermal Conductivity |
W/mK |
0.49 |
0.37 |
| Shrinkage (750ºC for 12 hours) length, width/thickness |
% |
0.14/1.1 |
0.12/0.8 |
| Loss of Ignition |
% |
7.3 |
5.3 |
| Coefficient of Thermal Expansion (100-750ºC) |
K-1 |
6.6x10 (-6) |
6.4x10 (-6) |
| Electrical Properties |
|
|
|
| Flatwise Electrical Strength |
kV/m |
7300 |
4700 |
| Arc Resistance, Stage 40 (40 mA) |
s |
420 |
420 |
| Volume Resistivity - 25ºC |
Ωcm |
9.0x10 (10) |
7.5x10 (10) |
| Volume Resistivity - 600ºC |
Ωcm |
1.0 x10 (10) |
3.1 x10 (10) |
| Surface Resistivity - 25ºC |
Ω |
10.0x10(11) |
4.1x10(10) |
| Surface Resistivity - 600ºC |
Ω |
7.0x10(9) |
3.9x10(9) |
| Relative Permittivity - 25ºC |
|
7.6 |
4.7 |
| Relative Permittivity - 600ºC |
|
21.0 |
4.0 |
| Dissipation Factor - 25ºC |
|
250 |
640 |
| Dissipation Factor - 600ºC |
|
400 |
510 |
| Comparitive Tracking Index |
|
500 |
600 |
|
|
|
|
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