Transparent Watch Case Sapphire Cover Glass Wear Resistance Polished Surface

Place of Origin china
Brand Name zms
Model Number watchcase
Minimum Order Quantity 30pcs
Price by case
Packaging Details carton case
Delivery Time 2-4weeks
Payment Terms L/C, T/T
Supply Ability 1000pcs/month
Product Details
Vision Light Transmissivity 85% Industry Electronic Product Protect Glass Cover,led,optical Glass,epi-ready Wafer
Materials 99.999% Al2O3 Color Colorless Transparent
Advantagement Hardness 9.0,wear Resistance, Applications User Iphone Camera Glass,phone,front Cover Glass,
Surface Polished
High Light

sapphire lens cover


sapphire crystal glass

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Product Description

transparent watchcase made by sapphire glass, sapphire watch glass surface,sapphire optical glass window for watchbands watch optical glass lens,sapphire optical glass window for watch,scanner cover glass by sapphire,Al2O3 sapphire wafer sapphire lens for watch screem,watch glass by sapphire,scanner cover glass by sapphire,


1. What is sapphire glass?

   sapphire waferis one of the hardest materials, is come from 99.999% Al2O3 single crystal,Transparent Watch Case Sapphire Cover Glass Wear Resistance Polished Surface 0

and possesses very good transmission  during the range ofvisible and near IR spectrum.

It is widely used as optical window in infrared and far infrared military equipments, apparatus and instruments of satellite and space technology, and navigation and spaceflight, such as night infrared scope/sight and night vision camera, etc.The sapphire wafercrystal window is intensively applied in high-tech fields.

    sapphire waferoptical 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.

Materials characteristics
Item B270 CaF2 Ge MgF2 N-BK7 Sapphire Si UV Fused Sillca ZnSe ZnS
Refractive index(nd) 1.523 1.434 1.003 1.413 1.517 1.768 3.422 1.458 2.403 2.631
Coeffcient of dispersion(Vd) 58.5 95.1 N/A 106.2 64.2 72.2 N/A 67.7 N/A N/A
Density(g/cm3) 2.55 3.18 5.33 3.18 2.46 3.97 2.33 2.20 5.27 5.27
TCE(μm/m℃) 8.2 18.85 6.1 13.7 7.1 5.3 2.55 0.55 7.1 7.6
Soften Temperature(℃) 533 800 936 1255 557 2000 1500 1000 250 1525
Knoop hardness(kg/mm2) 542 158.3 780 415 610 2200 1150 500 120 120


Sapphire glass cover of applications


Transparent Watch Case Sapphire Cover Glass Wear Resistance Polished Surface 1


Sample in details for watch glass

Transparent Watch Case Sapphire Cover Glass Wear Resistance Polished Surface 2Transparent Watch Case Sapphire Cover Glass Wear Resistance Polished Surface 3


3.Saphphire Produce process

Al2O3 CRYSTAL body-------> Crystal cutting in axis needed ------>shape repair-----> anneal


------->lapped------->polish------>inspective----->(AR coating)------>package



commen size can be provided

Diameter 0.2-300mm
Thickness 0.1-100mm
Dimension tolerance +/-0.1mm or +/-0.02mm
Surface quality (scratch & dig) 60/40, 40/20 or better
Clear aperture >85%, >90%
Surface accuracy L/10, L/2, L
Parallelism +/-3' ,+/-30''
Bevel 0.1~0.3mm x 45 degree
Coating AR, BBAR or Custom


Q: What's the way of shipping and cost?

A:(1) We accept DHL, Fedex, EMS etc.

(2) it is fine If you have your own express account ,

If not,we could help you ship them and Freight is iaccordance with the actual settlement.


Q: How to pay?

A:100% T/T, Paypal, Secure payment and Assurance payment.


Q: What's your MOQ?

A: (1) For inventory, the MOQ is 10pcs. if 20pcs it's better.

(2) For customized products, the MOQ is 50pcs up.


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 -4 weeks after you order contact.


Q: Do you have standard products?

A: Our standard products in stock. as like substrates  2inch 0.43mm 1sp or

2sp thickness each orientation in stock.