Ceramic Tubes,Disc and Bobbins

Alumina Ceramics IC 60 IC 80 IC 95 IC 99.5
Chemical Analysis
AL203 Min 60 80 95 99.5
Sio3 Max 35 18 3 0.20
Fe2O3 Max 0.50 0.30 - -
Na2O Max 1 1 0.50 0.20
Physical Properties
Colour White White Ivory/ White Pink/Ivory/ White
Sp.Gr. – gms/cc 2.80 3.20 3.80 3.90
Water Absorption 0 0 0 0
Max.Service Temp –0 C 1450 1550 1650 1800
Gas Permeability Nil Nil Nil Nil
Hardness R45N 68 72 83 83
Chemical Resistivity Good Good VeryGood Excellent
Co-eff. Of Thermal Expansion – Linear Coefficient
(RT-14000 C) x 10-6 /0C Max. - - 8.0 8.3
Flexural Strength N/mm2 210 280 350 365
Tensile Strength N/mm2 - - 188 260
The Values are obtained from standard bars & cubes, Data on other shapes shall differ, the data should not be taken as a specification but for general guidance only
Thermocouple Protection Tube (One end closed) 4mm to 250mm 2 meters
Tubes (both ends open) 1mm to 250mm 2 meters
Beads (sleeve) single & multiple bore 1mm to 25mm 2 meters
Bushes, Nozzles, Rods Sleeves Customer Specified
Ferrules as per specification Customer Specified
Crucibles, Combustion Boats, Combustion Tubes Customer Specified
Custom Designs & Special Shapes for specific applications