Sapphire Crystal for Sapphire Crystal Watches Prices Sapphire Crystal Watch Glass

Sapphire crystal for sapphire crystal watches prices sapphire crystal watch glassIngotAttributesCustomer settings:sapphire bearing parts with hole, Al2O3 single crystal glass ,sapphire optical glass ingots, sapphire optical rods,sapphire optical stick,Al2O3 single crystal glass lens,optical glass ingots by sapphire ,sapphire optical rods1. Why choose the sapphire?Thinner and Stronger than Standard Glass WindowsTransmits Wavelengths Ranging From UV to Mid-InfraredFeatures Extreme Surface Hardness and Chemical Resistance 2,What is sapphire?Synthetic Sapphire is a single crystal form of corundum, Al2O3, also known as alpha-alumina, and single crystal Al2O3,have 9.0 hardness.Sapphire is aluminium oxide in the purest form with no porosity or grain boundaries, making it theoretically dense.The combination of favourable chemical, electrical, mechanical,optical, surface, thermal, and durability properties make sapphire a preferred material for high performance system and component designs. For various semiconductor applications,sapphire is the best choice in comparison with other synthetic single-crystals.Product nameindustrial sapphire wafersapphire optical lens chemical formulaAL2O3Crystal structureHexagonalHardness Mohs9HCompressvise strengthGpa 2.0Density(20ºC)3.98g/cmFusion point2040ºCBoiling point2980ºCCoefficient of Thermal Expansionα=5.8×10 -6 /KSpecific heat0.418W.s/g/kThermal conduction25.12W/m/k(@100°C)Optical transmission range0.17-5.5μmTransmission(0.3~5um)85-88%Refractive indexno=1.768ndne=1.76nddn/dt13×10-6/K(@633nm)Permittivity11.5(//c), 9.3(⊥c) 3. Product availableSapphire Washers, Sapphire Windows, Sapphire Bearings, Sapphire Rods, Sapphire Tubes, Rubysapphire wafer, dome sapphire, Sapphire insulation Film, Sapphire ball lens, Sapphire/ruby ball    a: Dimesion size : 0.2-300mm or customization , thickness >0.1mm   b: Gemstone Type: Synthetic (lab created)   c: AR coating or as your request   d: Product shape : round , rectangle or custom shape   e: Chemical Composition : Al2O3Specifications:Diameter (Φmm) 8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0Thickness (mm)0.5, 1.0, 2.0Diameter Tolerance (mm)+0.0/-0.2 (General), +0.0/-0.1 (High Precision)Thickness Tolerance (mm)±0.2 (General), ±0.05 (High Precision)Clear Aperture>75% (Small Size), >90% (Large Size)Parallelism3 min. (General), 10 sec. (High Precision)Surface Quality: Scratch/Dig80/50 (General), 40/20 (High Precision)Flatness (per 25mm@633nm)λ(General), λ/4 (High Precision)Bevel (face width x 450)