| Gc. steatite |
| SUB GROUP |
Gc220 Gc221 |
Gc220 Gc221 |
| FEATURE OF COMPOSITION |
Standard |
H.F |
| APPLICATION RANGE |
L.V. and H.V.insulation high mechanical strength small & middle sized insulators with very complicated shapes and accurate dimensions. |
HF insulation, very complicated shapes and accurate dimensions excellent mechanical and wear resistance, suited for seal rings, etc… |
| PROPERTIES |
|
| COLOUR |
Ivory |
Ivory |
|
| POROSITY (Vol. %) |
0 |
0 |
|
| BULK DENSITY (g/cm2) |
2.70 |
2.70 |
|
| HARDNESS (Mohs Scale) |
7 to 8 |
7 to 8 |
|
| FLEXURAL STRENGTH(N/mm2) |
Unglazed |
140 |
|
|
| Glazed |
– |
|
|
| MODULUS OF ELECTRICITY (103N/mm2) |
80 |
110 |
|
| THERMALEXPANSIONLINERCOEFFICENT(10-6 K-1) |
a20 – 1000 |
7.10 |
|
|
| a20 – 3000 |
8.30 |
|
|
| a20 – 6000 |
8.70 |
|
|
|
|
|
|
| THERMAL SHOCK RESISTANCEMIN. (K) |
80 |
100 |
|
| SPECIFIC HEAT CAPACITY (20-100C) |
800 to 900 |
800 to 900 |
|
| THERMAL CONDUCTIVITY (20-100C) |
3.0 |
3.0 |
|
| DIELECTRIC STRENGTH METHOD – method A (KV / mm) |
15 |
20 |
|
| RELATIVE PERMITTIVITY (48 to 62Hz) |
6.0 |
6.0 |
|
