Engineering Ceramics
Name ¡@ High Strength Mullite
¡@ M-KML
Composition ¡@ 3Al2O3    2SiO2
General Properties Color White
Bulk Density(g/cm3) 3.1
Water Adsorption Ratio(%) 0
Mechanical Properties Bending Strength (MPa) 290
Compressive Strength (MPa) 2000
Young's Modulus (GPa) 210
Poisson's Ratio 0.29
Hardness (GPA) 11
Electrical Properties Volume Resistivity [RT] (£[¡Ecm) 0.1x1015
                               [500¢J] (£[¡Ecm) 3x106
Dielectric Constand [1MHz] 6.6
Dielectric Tangent [1MHz] 0.001
Dielectric Strength (kV/mm) >10
Theremal Properties Max. Useable Temperature (¢J) 1600
Thermal Expansion [RT-200¢J] (/¢J) 3.8x10-6
                                [RT-400¢J] (/¢J) 4.2x10-6
                                [RT-600¢J] (/¢J) 4.5x10-6
                                [RT-800¢J] (/¢J) 4.7x10-6
Thermal Conductivity [RT] (W/m¡Ek) 6
                                   [400¢J] (W/m¡Ek) 4
                                   [800¢J] (W/m¡Ek) 4
Specific Heat [RT] (kj/kg¡Ek) 0.7
                      [400¢J] (kj/kg¡Ek) 1.1
                      [800¢J] (kj/kg¡Ek) 1.2
Thermal Shock Strength (¢J) 300
Remarks   mechanical strength:320Mpa at 1,300¢J

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