Customized ODM Service Sapphire Crystal Watch Case High Mechanical Strength

Product Description Blue Color Sapphire Watch Case For Luxury Brand Czochralski method, or CZ method for short. First heating the raw material to the melting point and then melting to form a melting soup, and then using a single crystal seed to contact the surface of the melting soup, in the crystal seed and the solid liquid interface of the melted soup due to the temperature difference and formed too cold. So the melted soup began to solidify on the surface of the seed and grow a single crystal with the same crystal structure as the seed. The seed is also pulled up at a very slow speed, and accompanied by a certain speed of rotation, with the upward pull of the seed, the melt soup gradually solidified on the liquid solid interface of the seed, and then formed a axis of symmetrical single crystal ingot. FATURES 1. High transmittance 2. High mechanical strength 3. High temperature resistance 4. Scratch resistance 5. Abrasion resistance 6. Customized shape 7. Optional color Property Specifications Thickness 0.5-200mm Size Tolerance ±0.01 Edge Finish Ground and beveled Surface Quality 40-20 scratch-dig Surface Flatness λ/4@633nm Parallelism ≤3 arc min(≤0.9mrad) Clear Aperture ＞80% of central diameter Hardness(Knoop) 1370 kg/mm2 Young's modulus 3.4*1011N/m2 Thermal Limit 22W/m/K Thermal expansion coefficient 8.4*10-6/K Customized ODM Service Sapphire Crystal Watch Case High Mechanical Strength 0Customized ODM Service Sapphire Crystal Watch Case High Mechanical Strength 1Customized ODM Service Sapphire Crystal Watch Case High Mechanical Strength 2 These excellent optical, mechanical, thermal, chemical and electrical properties determine its important position and role in the military and civilian fields. (1) Chemical stability: Sapphire has a high degree of chemic