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ZIRCON BASED

GROUP

  

SUB GROUP

                                830

FEATURE OF COMPOSITION

Zr02  - 95%

ZrSi04  - 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 ELECTRICITY (103N/mm2) 180 -

THERMAL
EXPANSION
LINER
COEFFICENT
(10-6 K-1)

 a20 - 1000c 8.70 3.40
a20 - 3000c 9.50 3.10
a20 - 6000c 10.50 3.70
a20 - 8000c 11.00 4.00
THERMAL SHOCK RESISTANCEMIN. (K) 80 350
SPECIFIC HEAT CAPACITY (20-100C) ~ 500 -
THERMAL CONDUCTIVITY (20-100C) - -
DIELECTRIC STRENGTH METHOD - 
method A (KV / mm)		 - 1.7
RELATIVE PERMITTIVITY (48 to 62Hz)  - -
DISSIPATION 
   FACTOR AT 
   20C (103)		  48 - 62 Hz - -
1 KHz - -
 1MHz - -
   VOLUME
   RESISTIVITY
   IN TERMS OF
   TEMPERATUR
   E (D.C.)cm		 200C 1014 -
2000C - -
6000C - -
 

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