ZIRCON BASED
| ZIRCON BASED | |||||
|---|---|---|---|---|---|
| GROUP | |||||
| SUB GROUP | 830 | ||||
| FEATURE OF COMPOSITION | ZrO₂ - 95% | ZrSiO₄ - 50% | |||
| APPLICATION RANGE | High mechanical strength, exceptional wear resistance, good resistance to thermal shock. | Good refractoriness and good thermal shock, resistance, suited for L.V. circuit breaker. | |||
| PROPERTIES | |||||
| COLOUR | Creamish | Tan | |||
| POROSITY (Vol. %) | 0 | 30 | |||
| BULK DENSITY (g/cm²) | 5.40 | 2.58 | |||
| HARDNESS (Mohs Scale) | 8 | - | |||
| FLEXURAL STRENGTH (N/mm²) | Unglazed | 220 | 35 | ||
| Glazed | - | - | |||
| MODULUS OF ELASTICITY (103 N/mm²) | 180 | - | |||
|
THERMAL EXPANSION LINER COEFFICIENT (10⁻⁶ K⁻¹) |
a20 - 100°C | 8.70 | 3.40 | ||
| a20 - 300°C | 9.50 | 3.10 | |||
| a20 - 600°C | 10.50 | 3.70 | |||
| a20 - 800°C | 11.00 | 4.00 | |||
| THERMAL SHOCK RESISTANCE MIN. (K) | 80 | 350 | |||
| SPECIFIC HEAT CAPACITY (20-100C) | ~ 500 | - | |||
| THERMAL CONDUCTIVITY (20-100C) | - | - | |||
| DIELECTRIC STRENGTH METHOD A (KV/mm) | - | 1.7 | |||
| RELATIVE PERMITTIVITY (48 to 62Hz) | - | - | |||
| DISSIPATION FACTOR AT 20C (10³) | 48 - 62 Hz | - | - | ||
| 1 KHz | - | - | |||
| 1 MHz | - | - | |||
| VOLUME RESISTIVITY IN TERMS OF TEMPERATUR E (D.C.)cm |
20°C | 10¹⁴ | - | ||
| 200°C | - | - | |||
| 600°C | - | - | |||