Sapphire Watch Crystal Wrist for High Quality Watch Crystal 20-50mm 1mm 2mm 3mm Thickness Flat Dome

Product Description

Sapphire Watch Crystal Wrist for High Quality Watch Crystal 20-50mm 1mm 2mm 3mm Thickness Flat Dome Ingot
Attributes
Customer settings:sapphire bearing parts with hole, Al2O3 single crystal glass ,sapphire optical glass ingots, sapphire optical rods,sapphire optical stick,Al2O3 single crystal glass lens,optical glass ingots by sapphire ,sapphire optical rods

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.

Product name	industrial sapphire wafer
sapphire optical lens chemical formula	AL2O3
Crystal structure	Hexagonal
Hardness Mohs	9H
Compressvise strength	Gpa 2.0
Density(20ºC)	3.98g/cm
Fusion point	2040ºC
Boiling point	2980ºC
Coefficient of Thermal Expansion	α=5.8×10 -6 /K
Specific heat	0.418W.s/g/k
Thermal conduction	25.12W/m/k(@100°C)
Optical transmission range	0.17-5.5μm
Transmission(0.3~5um)	85-88%
Refractive index	no=1.768nd
	ne=1.76nd
dn/dt	13×10-6/K(@633nm)
Permittivity	11.5(//c), 9.3(⊥c)

 

3. Product available

Sapphire Washers, Sapphire Windows, Sapphire Bearings, Sapphire Rods, Sapphire Tubes, Ruby
sapphire wafer, dome sapphire, Sapphire insulation Film, Sapphire ball lens, Sapphire/ruby ball 

   a: Dimesion size : 0.2-300mm or customization , thickness >0.1mm
   b: Gemstone Type: Synthetic (lab created)
   c: AR coating or as your request
   d: Product shape : round , rectangle or custom shape
   e: 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)	<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

 

applications arethese products for ?

LED OPtical element applications mobile camera cover glass
mechanical parts watch and other consumer electronics applications
Fingerprint recognition allication SOS substrates Artificial jewelry

 

Production equipment:

FAQ:

Q: What's the way of shipping and cost?	A: (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.
Q: How to pay?	A:  T/T, Paypal, etc
Q: What's your MOQ?	A:  (1) For inventory, the MOQ is 5pcs.
	(2) For customized products, the MOQ is 10pcs-25pcs.
Q: What's the delivery time?	A:   (1) For the standard products
	For inventory: the delivery is 5        workdays after you place the order.
	For customized products:       the delivery is 2 or 3 weeks after you place the order.
	(2) For the special-shaped products,       the delivery is 4 or 6 workweeks after you place the order.
Q: Do you have standard products?	A:   Our standard products in stock.
Q: Can I customize the products based on my need?	A:  Yes, we can customize the material, specifications and optical       coating for your optical components based on your needs.