Sapphire Material
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Sapphire Material
Sapphire material is often used as infrared military devices and high-intensity laser window materials because of its good light transmittance, high hardness, and friction resistance, which can meet the requirements of multi-mode composite guidance. It is widely used in industry, national defense, and electronics. field
Al2O3 use as LED substrates and optical window materials with superior properties.
99.99% aluminum oxide has stable chemical properties and a Mohs hardness of 9, second only to diamond. It has excellent light transmittance, thermal conductivity, electrical insulation, mechanical properties, wear resistance, and wind erosion resistance. . Is the main raw material of sapphire
Optinnovate's Sapphire Ceramic
Chemical Properties | 1. Non-porous 2. 2.Unaffected by weathering 3. Unaffected by hydration 4. Virtually unaffected by any solvents or acids at room temperature | |
Thermal Properties | ||
Melting Point | 2053°C | |
Maximum Using Temperature | 1800°C | |
Thermal Conductivity | 40 W/M°K @ 298°K | |
Expension @ 25°C | 4.5×10-6/K-1 and @ 1000°C: 9.0×10-6/K-1 (90° orientation) | |
Specific Heat Capacity | 750 J/K at 300°K | |
Viscosity @ 2053°C | 0.0584 Pa•s | |
Physical Properties | ||
Density | 3.98 g/cm3, (0.143 lbs./in3) | |
Hardness | Knoop microindenter: 1800 FACE perpendicular to c-axis, 2200 FACE parallel to c-axis | |
Young’s Modulus | 400 GPa @ 20°C | |
Tensile Strength | 300 to 400 MPa | |
Point Group; Symmetry | 3 2/m; [C,1A3, 3A2, 3P] | |
Lattice Dimensions | a = 4.748 Angstroms, c = 12.957 Angstroms | |
Sound Speed | ~10 km/s | |