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80% and 99.5% Alumina for Tubes

Chemical Analysis

Constituents Alumina 80% Alumina 99.5%
Al2O3 Min 80 99.5
SiO2 Max 18 0.2
Fe2O3 Max 0.3
Na2O Max 1 0.2

Physical Properties

Constituents Alumina 80% Alumina 99.5%
Colour White Ivory
Sp.Gr. – gms/cc 3.2 3.9
Water Absorption 0 0
Max Service Term 1450 1650
Gas Permeability Nil Nil
Hardness R45N 72 83
Chemical Resistivity Good Excellent
Flexural Strength N/mm2 280 365
Tensile Strength N/mm2 260
CTE (RT-14000 C) x 10-6 /°C Max. 8.3

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.

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