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STEATITE

GROUP

C. 200

SUB GROUP

                        220                                                                                      221

FEATURE OF COMPOSITION

Standard

Standard

Low-Loss

H.F

APPLICATION RANGE

L.V. and H.V.
insulation high mechanical strength small & middle sized insulators with very complicated shapes and  accurate dimensions. 

L.V. &  H.V. and H.F. insulation high mechanical strength small & middle sized insulators with very complicated shapes and  accurate dimensions. 

HF insulation, excellent  mechanical strength, small and 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 Ivory Ivory
POROSITY (Vol. %) 0 0 0 0
BULK DENSITY (g/cm2) 2.70 2.70 2.80 2.70
HARDNESS (Mohs Scale) 7 to 8 7 to 8 7 to 8 7 to 8

  FLEXURAL
  STRENGTH
(N/mm2)

  Unglazed 130 130 140 140
  Glazed - - - -
MODULUS OF ELECTRICITY (103N/mm2) 80 80 110 110

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

a20 - 1000c 7.10 7.10 7.10 7.10
a20 - 3000c 8.50 6.60 8.30 8.30
a20 - 6000c 8.60 7.55 8.70 8.70
a20 - 8000c 8.55 7.80 8.65 8.65
THERMAL SHOCK RESISTANCEMIN. (K) 80 100 100 100
SPECIFIC HEAT CAPACITY (20-100C) 800 to 900 800 to 900 800 to 900 800 to 900
THERMAL CONDUCTIVITY (20-100C) 3.0 3.0 3.0 3.0
DIELECTRIC STRENGTH METHOD - 
method A (KV / mm)
15 15 20 20
RELATIVE PERMITTIVITY (48 to 62Hz)  6.0 6.0 6.0 6.0
DISSIPATION 
   FACTOR AT 
   20C (103)
 48 - 62 Hz 15 1 0.5 0.5
1 KHz - - - -
 1MHz 12 .8 0.4 0.4
   VOLUME
   RESISTIVITY
   IN TERMS OF
   TEMPERATUR
   E (D.C.)cm
200C 1013 1013 1013 1013
2000C 1010 1010 1011 1011
6000C 105 107 107 107
 

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