Spinel

Physical Properties
Crystalline Structure Cubic Single Crystal
Composition MgO*3.5AL2O3
Purity 99.99%
Cleavage -
Density 3.61 g/cm3
Disclosation Density 109-108/m2
Thermal Properties
Melting Point 2300K-2330K
Softening Point 2070K
Specific Heat 7.9*102 J/Kg*K at 300K
Thermal Conductivity -
Thermal Expansion 5.9*10-6/K
Mechanical Properties
Hardness Mohs8,Knoop 1175-1380
Youngs Modulus -
Modulus of Rupture -
Compressive Strength -
Tensile Strength -
Poissons constant -
Chemical Properties
Acids and alkalis attack 0 at Room temperature
Porosity 0
Electrical Properties
Dielectric Constant 8-9
Electrical Resistivity -
Optical Properties
Refractive Index nD at 0.5893μm 1.727
Dispersive Power(nF-nC) 0.012
Transmission,Disc Thickness 5 mm
-Visible Light -
-Infrared 85% 1μm
-Ultraviolet -
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