Flat Sapphire Crystal Glass Discs Watch Glass Mirror D20mm to D29.5mm T1.5mm

Product Name: Sapphire Crystal Glass DiscsFeatures: high gloss, no bubble, high temperature resistance, corrosion resistance, high hardness, high transmittanceWave Bands: 185 - 5000nmTolerance: ±0.01 ~ ±0.05mmOther Processing Technology: accurate profiling edge grinding, chamfering, hole opening, fine grinding and coatingEST: 3-7daysNote: Sapphire glass generally refers to synthetic sapphire, which is quite different from natural sapphire, which is generally used for the manufacture of wrist watch mirror. It is wear-resistant material with tungsten titanium alloy and high-tech ceramics. Although these materials can resist abrasion, they can not withstand strong impact, and some materials with the same hardness or higher may scratch the surface of these materials. The main component of natural sapphire and sapphire glass is alumina (Al2O3), and the chemical composition and physical properties are basically the same.Other Physicochemical PropertiesMaterial: Al2O3-SapphireThermal Conducti