Active Member
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[China]
Address: 1610, Building 2B, Phase 2, Jindi Longcheng, Longcheng Street, Longgang District, Shenzhen, Guangdong, China
Contact name:Jeff
Shenzhen Tianzhili Crystal Co., Ltd. |
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High Performance Scratch Resistant Watch Glass For Stainless Steel Watches
Product Description
Property | Specification |
Thickness | 0.5-50mm |
Size tolerance | 0.02mm |
Edge Finish | Ground and beveled |
Surface Quality | 40-20 scratch-dig |
Surface Flatness | λ/4 @ 633 nm |
Parallelism | ≤3 arc min (≤0.9 mrad) |
Clear Aperture | >80% of central diameter |
Hardness (Knoop) | 1370 kg mm-2 |
Young's modulus | 3.4 x 1011 N m-2 |
Thermal Limit | 22 W m-1 K-1 |
Thermal expansion coefficient | 8.4 x 10-6 K-1 |
Production Flow
Company Information
Our company has a complete ,standardized and scientific quality management system.Characteristic lead the future. Characteristic products and service is the foundation of our cooperation,and we look forward to create brilliant achievements together with you.
Inspection equipment
Inspection equipment
Interferometer Transmissivity detector
Quadratic element Orientometer
Flexural measurement
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.
