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H9 / HV1800-2200 Scratch Proof Watch Glass , Double Side Polishing Sapphire Cover Glass

Categories Flat Watch Glass
Brand Name: tianzhili
Place of Origin: Guangdong, China (Mainland)
Price: Calculate prices by size and technology
Packaging Details: Conventional packaging plastic packaging box foam cotton carton
Product name: Sapphire glass
Material: Artificial sapphire
use: Watch lens
hardness: H9/HV1800-2200
custom made: Can be customized
Coating: Anti-Reflective (AR) Coatings
Color: Clear Transparent
shape: Circular plane
polishing: Double side polishing
Structure: all
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    H9 / HV1800-2200 Scratch Proof Watch Glass , Double Side Polishing Sapphire Cover Glass

    H9 / HV1800-2200 Scratch Proof Watch Glass , Double Side Polishing Sapphire Cover Glass

    About sapphire glass
    SAPPHIRE CRYSTAL (sapphire glass) generally refers to synthetic sapphire, generally used in the manufacture of the watch glass.
    It is resistant to wear with tungsten titanium alloys and high-tech ceramics. but sapphire materials can wear resistance and
    withstand the strong impact, and some of the same or higher hardness of the material (e.g., millstone, sandpaper, nail, granite,
    concrete wall, and floor, etc.) so sapphire glass are not likely to scratch the surface of these materials.

    Product Description:

    Product Features
    Sapphire Glass / Mineral /K one /BK7
    Customized according to customers requirement
    Round, square, rectangle; flat, dome, curve, bridge ,pot Cover shape, etc.
    AR-Coating,Blue, red, green, clearly...... many colors
    9H / HV1800-HV2200
    As per customer design :Laser engraving/Silk screen printing
    optical transmission
    High optical production rate
    - Scratch resistance
    - Abrasion resistance
    - High mechanical strength
    - High temperature resistance
    - Good thermal stability
    - High optical production rate

    Color: Blue, Purple, Transparent, Neutral, Gray-Blue, Smoke, Tea
    Layers: 3~10 layers
    Single side OR both side
    Hard coating
    Electroplating / Metallization

    Color: Black, Golden, Pink Golden, Blue...

    These round sapphire glass crystals come in a variety of thicknesses and diameters, are nearly unbreakable crystals making them highly prized by watchmakers. These watch crystals can be glued into most watch cases or pressure fit into most plastic watch crystal gaskets. Each sapphire watch crystal comes with a slightly polished bevel edge to give the watch crystal a nice finished look once it has been installed. These generic sapphire glass crystals can be used to replace the watch crystals of almost every name brand watch popular today, especially high-end watch crystals like those in Rolex watches, saving you both time and money.

    Please try to offer more details as below when you place an order:

    1. Buyer offers an original sample or related mounting parts and special request for attention or change.

    2. If you are unable to provide samples, please provide drawings or try to provide more details.

    We can provide flat/single domed/double domed and other shape watch glass,Welcome to email us.

    Synthetic Sapphire Window Technique Index :

    Size tolerance0.02mm
    Edge FinishGround and beveled
    Surface Quality40-20 scratch-dig
    Surface Flatnessλ/4 @ 633 nm
    Parallelism≤3 arc min (≤0.9 mrad)
    Clear Aperture>80% of central diameter
    Hardness (Knoop)1370 kg mm-2
    Young's modulus3.4 x 1011 N m-2
    Thermal Limit22 W m-1 K-1
    Thermal expansion coefficient8.4 x 10-6 K-1

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