Double Domed Crystal Sapphire Screen Lens Protector for Smartwear
Why Choose sapphire crystal?
Sapphire also have a good light transmittance ability,it can
transmitt the light from 190nm~2100nm. from DUV~IR.
We have various stocked sapphire watch covers for your choosing,
MOQ from 1pcs! Low Price, best quality you can find in the world!
(Diamond measures 10, the highest rating.) Watch crystals made of
synthetic sapphire are often marketed as “scratch resistant” or
“virtually scratchproof” because they are very difficult - but not
impossible - to scratch. Diamond can scratch them; so can man-made
materials that incorporate silicon carbide, which, with a Mohs
rating of between 9 and 10, is harder than sapphire.
1. Thinner and Stronger than Standard Glass Windows
2. Transmits Wavelengths Ranging From UV to Mid-Infrared
3. Features Extreme Surface Hardness and Chemical Resistance
Production description:
Chemical composition | Al2O3 |
Density | 3.98g |
bending strength | 320-930Pa |
Vickrs hardness | 1800-2200 |
optical transmission | >90% |
melting point | 2050℃ |
Mohs hardness | 9(Next only to diamonds:10) |
Bevel | 0.1-0.5mm |
Coating | upon customer request |
Material | Sapphire |
Shape | Round, square, rectangle; flat, dome, curve, bridge ,pot Cover
shape, etc. |
Size | Customized according to customers requirement |
Maximum Temperature (Continuous): | 2000℃ |
Coefficient Of Expansion-Perpendicular to C-axis: | 4.3x10-6/℃ |
Coefficient Of Expansion-Parallel to C-axis: | 5.4x10-6/℃ |
Conductivity: | 46w/mk |
Specific Heat (0~100℃): | 0.16cal/g℃ |
Company profile:
JADEZONE Sapphire optical Co.,Ltd. is a factory which is
specialized on sapphire glass with 10 years export expreience.
Factory covers 3,000 square meters. We got eight patents and one software copyright, and passed the
ISO9001 quality certification and ISO14000 environmental
certification.
About Factory:
Our Certificates:
Packing&Delivery:
About Packing : Stand export cartonAbout Delivery: DHL/UPS/TNT/EMS/FedEX ,you can choose whatever you
like.
FAQ
Q: Do you provide samples ? is it free or extra ?
A: Yes, but it's a precision product that requires extra cost and
freight.
Q: How can I customize my products?
A: Attach your drawings with details (Surface treatment, material,
quantity and special requirements etc).
Q: How did you test the product before they are packed?
A: We have strict QC procedure, each product will be tested by
three times even more with professional machine before packing.
Q: What if the products we received are not good?
A: Contact us without hesitation, our special after-sales service
will take the responsibility.
Q: What's the material of your products ?
A: Sapphire