ARH Sapphire Co., Ltd
| Payment Terms | T/T, Western Union |
| Supply Ability | 5000PCS per month |
| Delivery Time | 30 days |
| Packaging Details | cartons |
| application | Watch |
| coating | optional |
| diameter | optional |
| edge | Polished |
| hardness | 9 Mohs |
| material | Sapphire Crystal |
| name | Sapphire Crystal Watch Glass |
| refractiveIndex | 1.77-1.78 |
| shape | Round |
| surfaceAccuracy | 40/20 |
| surfaceQuality | 40-20 |
| thickness | 2.5mm |
| tolerance | ±0.05mm |
| transparency | High |
| Place of Origin | Chongqing, China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 5000PCS per month |
| Delivery Time | 30 days | Packaging Details | cartons |
| application | Watch | coating | optional |
| diameter | optional | edge | Polished |
| hardness | 9 Mohs | material | Sapphire Crystal |
| name | Sapphire Crystal Watch Glass | refractiveIndex | 1.77-1.78 |
| shape | Round | surfaceAccuracy | 40/20 |
| surfaceQuality | 40-20 | thickness | 2.5mm |
| tolerance | ±0.05mm | transparency | High |
| Place of Origin | Chongqing, China | ||
| High Light | Sapphire Watch Lens Glass ，Crystal Sapphire Watch Lens Glass ，Triangle Single Dome Sapphire Glass | ||
Laser Cutting Triangle Single Dome Crystal Sapphire Watch Lens Glass
Sapphire glass (SAPPHIRE CRYSTAL) generally refers to synthetic sapphire, which is very different from the jewelry that people usually understand-natural sapphire, and is generally used for the manufacture of watch mirrors.
It is anti-wear materials with tungsten-titanium alloy and high-tech ceramics. Although these materials are resistant to abrasion, they cannot withstand strong impacts. At the same time, some materials with the same or higher hardness (such as: grindstone, sandpaper, nail file, granite surface, concrete wall and floor, etc.) may be affected. Scratch the surface of these materials.
Sapphire is a general term for corundum gemstones of other colors besides red rubies. The main component is alumina (Al2O3). Sapphire glass refers to synthetic sapphire. Gem-grade sapphire can be produced easily and cheaply in the laboratory. Its chemical composition and physical properties are the same as natural sapphire.
After being polished, in order to ensure a tight fit with the watch case, the semi-finished product needs to be further chemically polished.
Immediately afterwards, these sapphire crystals will go to the furnace of the dust-free laboratory, where they will be anti-glare treated by a precision vacuum evaporation process.
The sapphire crystal after anti-glare treatment can reduce 99% of the reflected light entering the naked eye, and the looming blue film plays this role.
If it is a regular brand watch, the sapphire glass is usually printed on the back cover of the watch, which is expressed in English SAPPHIRE or Sapphire Crystal. Even if it is a fake watch or a counterfeit watch, the use of sapphire watch glass is common. To test the hardness of the watch glass, you can use a sharp metal object similar to a needle to scratch the most unobtrusive part of the edge of the watch glass. It feels very hard, and it feels like a metal object drifts by. The glass is not scratched. It should be sapphire glass.
| 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 |
Why US?
1. We’re the rare source manufacturer of color sapphire boule, and the most professional factory of sapphire processing, especially the special watch case.
2. We have our own sapphire grown equipent with CZ and KY method.
3. Professional customized production according to the drawing provided by clients.
4. Precision work of sapphire processing and polishing.
5. Experienced technicians and skilled workers.
FQA
1. Are you a trading company or factory?
We are a professional factory of sapphire products, also a trading company .
2.Can you do customized products?
Yes, we specialized in customized production or OEM work.
CAD,3D drawing are needed.
3.Could you provide samples?
Yes, we could provide samples with a charge, but if you place the order with a quality above 100pcs, the sample charge will be refunded.
4.What’s the delivery time?
It depends on the type of products and the quality.
For watch case, the regular time is around 5-8 weeks for 200pcs according to the difficulty of the processing.
5.How about the payment?
T/T payment is prefered.
6.How about the delivery?
Mostly by air, like DHL, Fedex.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2019
Total Annual:
1500000-300000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
ARH Sapphire Co., Ltd is a company engaged in optoelectronic materials, new crystal materials,especially all kinds of sapphrie products,which are widely used in consumer electronics, precision equipment, laser communications, medical, environmental protection, high-end instruments... ARH Sapphire Co., Ltd is a company engaged in optoelectronic materials, new crystal materials,especially all kinds of sapphrie products,which are widely used in consumer electronics, precision equipment, laser communications, medical, environmental protection, high-end instruments...
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