Thickness 3.75mm Sapphire Crystal Watch Case Blue 9H High Hardness Abrasion Resistance
blue sapphire watch case
Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire, a single crystal form of Al2O3, is resistant to attack by strong acids due to its high dielectric constant. It has high compressive strength and a high melting point. It is also resistant to UV radiation darkening. Our sapphire optical windows are not coated, but a single layer coating of MgF2 on each surface of the window increases the single surface transmittance to 99% throughout the entire visible spectral region. Please note the SAW series sapphire windows are provided in random axis orientation by default and its birefringent nature could affect the polarization state of your application.
| Diameter: | 30-50mm or customized |
| Thickness: | 3.75mm |
| N.W.: | 8.5g |
| Vickers hardness: | HV2000-2500 |
| Mohs hardness: | 9 mohs |
| High Crystal Purity: | > 99.995% |
| Compressive strength: | 21000kg /cm² |
| Crystal texture: | Hexagonal lattice structure |
| Specific heat: | (20~350ºC)0.181cal/g°C(25ºC) |
| Thermal conductivity: | (20°C) 0.09calc.cm.ºC(25ºC) |
The Advantage of Sapphire Crystal Glass
– High hardness – 9H
– Scratch resistance
– Abrasion resistance
– High mechanical strength
– High temperature resistance
– Good thermal stability
– High optical production rate
FAQ
A1: Send enquiry via Email, Skype, Wechat or Call us directly.
Q2: How is your quality of products and quality guarantee policy?
A2: 100% full test before shipping and 100% compliance with the request of clients.
Q3: What is the payment method?
A3: T/T, Western Union, L/C, Paypal,Etc.
Q4: What is the delivery time?
A4: Normally 3-10 working days after payment received. But it depends on exactly situation.
Q5: What package do you use for the products?
A5: Safe and standard packing for export shipment (PE film cover, kraft paper/bubble bags parcel, and pack into carton or wooden box).
Q6: What is your main product? OEM/ODM ?
A6:Thermal interface material, Sapphire Glass products, Die cut service for industrial etc.
&OEM/ODM is available. For details, please kindly contact the sales persons.
Q7: What is your service?
A7: 24 hours online service is our promise.
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