Sapphire Watch Crystal Wrist for High Quality Watch Crystal 20-50mm 1mm 2mm 3mm Thickness Flat Dome Ingot
Customer Settings:
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1. Why choose the sapphire?
Thinner and Stronger than Standard Glass Windows
Transmits Wavelengths Ranging From UV to Mid-Infrared
Features Extreme Surface Hardness and Chemical Resistance
2. What is sapphire?
Synthetic Sapphire is a single crystal form of corundum, Al2O3, also known as alpha-alumina, and single crystal Al2O3, have 9.0 hardness. Sapphire is aluminium oxide in the purest form with no porosity or grain boundaries, making it theoretically dense.
The combination of favourable chemical, electrical, mechanical, optical, surface, thermal, and durability properties make sapphire a preferred material for high performance system and component designs. For various semiconductor applications, sapphire is the best choice in comparison with other synthetic single-crystals.
Dimension size: 0.2-300mm or customization, thickness >0.1mm
Gemstone Type: Synthetic (lab created)
AR coating or as your request
Product shape: round, rectangle or custom shape
Chemical Composition: Al₂O₃
Specifications
Diameter (Φmm)
8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0
Thickness (mm)
0.5, 1.0, 2.0
Diameter Tolerance (mm)
+0.0/-0.2 (General), +0.0/-0.1 (High Precision)
Thickness Tolerance (mm)
±0.2 (General), ±0.05 (High Precision)
Clear Aperture
>75% (Small Size), >90% (Large Size)
Parallelism
3 min. (General), 10 sec. (High Precision)
Surface Quality: Scratch/Dig
80/50 (General), 40/20 (High Precision)
Flatness (per 25mm@633nm)
λ (General), λ/4 (High Precision)
Bevel (face width x 45°)
<0.25mm
Coating
Upon customer's request
4. Materials characteristic
Refractive index (nd)
1.768
Coefficient of dispersion (Vd)
72.2
Density (g/cm3)
3.97
TCE(μm/mºC)
5.3
Soften Temperature(ºC)
2000
Knoop hardness(kg/mm2)
2200
What applications are these products for?
LED Optical element applications mobile camera cover glass
Mechanical parts watch and other consumer electronics applications
Fingerprint recognition application SOS substrates Artificial jewelry
Production equipment
Frequently Asked Questions (FAQ)
QWhat's the way of shipping and cost?
(1) We accept DHL, Fedex, TNT, UPS, EMS etc.
(2) If you have your own express account, it's great. If not, we could help you ship them.
QHow to pay?
We accept payment via T/T, Paypal, etc.
QWhat's your MOQ?
(1) For inventory, the MOQ is 5pcs.
(2) For customized products, the MOQ is 10pcs-25pcs.
QWhat's the delivery time?
(1) For standard products: In stock delivery is 5 workdays after you place the order. For customized products, delivery is 2 or 3 weeks after you place the order.
(2) For special-shaped products, delivery is 4 or 6 workweeks after you place the order.
QDo you have standard products?
Yes, our standard products are in stock.
QCan I customize the products based on my needs?
Yes, we can customize the material, specifications, and optical coating for your optical components based on your requirements.
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