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Custom Sapphire Watch Case Luxury Durability

Sapphire Crystal Watch Case
December 26, 2025
Category Connection: Sapphire Crystal Watch Case
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#6mm Sapphire Crystal Watch Case #42mm blue sapphire watch case #42mm apple watch case transparent
Brief: Thinking about an upgrade? This short demo helps you evaluate the fit. Watch as we showcase the manufacturing excellence of our custom sapphire crystal watch cases. You'll see the precision craftsmanship, from the Czochralski growth process to the final polished surfaces, and learn how these cases deliver luxury durability for high-end timepieces.
Related Product Features:
  • Manufactured using the Czochralski method for exceptional quality and symmetrical single crystal structure.
  • Offers high mechanical strength with a Knoop hardness of 1370 kg/mm² and Young's modulus of 3.4*10¹¹N/m².
  • Features excellent scratch and abrasion resistance, maintaining integrity in demanding environments.
  • Provides high temperature resistance with a thermal limit of 22W/m/K and melting point of approximately 2050°C.
  • Delivers superior optical clarity with high transmittance across a range of 0.19nm-5.5nm.
  • Available in customized shapes and optional colors, including the showcased blue variant for luxury brands.
  • Precision-engineered with tight tolerances including ±0.01 size tolerance and λ/4@633nm surface flatness.
  • Features ground and beveled edges with 40-20 scratch-dig surface quality for premium finish.
FAQs:
  • What manufacturing process is used for these sapphire watch cases?
    Our sapphire crystal watch cases are manufactured using the Czochralski (CZ) method. This process involves heating raw materials to their melting point, then introducing a single crystal seed that is slowly pulled upward while rotating, forming a symmetrical single crystal ingot with exceptional structural integrity.
  • What level of scratch resistance do these sapphire cases offer?
    These sapphire watch cases provide exceptional scratch resistance with a surface quality of 40-20 scratch-dig and a Knoop hardness of 1370 kg/mm². The material ranks 9 on the Mohs scale, making it highly resistant to abrasion and maintaining its pristine appearance over time.
  • Can I request custom sizes and colors for the watch cases?
    Yes, we offer full customization services including customized shapes and optional colors. The cases are available in thicknesses from 0.5-200mm with ±0.01 size tolerance, and we provide various color options including the blue variant shown, tailored to your luxury brand requirements.
  • What are the thermal properties of these sapphire crystal cases?
    Our sapphire watch cases feature excellent thermal properties with a thermal limit of 22W/m/K, thermal expansion coefficient of 8.4*10⁻⁶/K, and melting point of approximately 2050°C. This ensures stability from ultra-low temperatures up to 1500°C, making them suitable for extreme environments.
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