Porcelain | High Alumina | Steatite | Cordierite | Mullite | Macor | Zirconia | Ceramic Coating | Silicon Carbide | Titanium Dioxide | ZTA (Zirconia Toughened Alumina)

GROUP 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