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Square Shape Custom Sapphire Watch Crystal Wear Resisting 99.99％ Purity

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Square Shape Custom Sapphire Watch Crystal Wear Resisting 99.99％ Purity

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Brand Name :	zmkj
Model Number :	square white
Price :	by case
Payment Terms :	T/T, Western Union
Supply Ability :	500pcs per month
Delivery Time :	4-6weeks

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Product Details
Company Profile

Square Shape Custom Sapphire Watch Crystal Wear Resisting 99.99％ Purity

Blue/ Green/ Pink/ Red/ White Sapphire single crystal watch glass case/ Sapphire optical glass for watch lens

Color Sapphire Glass

Synthetic sapphire is transparent single crystal 99.99% pure Al₂O₃ that exhibits a unique combination of physical, chemical, electrical and optical properties: high thermal conductivity, high strength and scratch resistance, hardness (9 on the Mohs scale), transparent in wide range of wavelength, chemical inertness.
High crystal perfection, low reactivity, and appropriate unit cell size make sapphire an excellent substrate in the semiconductor industry for blue light-emitting diodes (LED).
Since Nobel Laureate in Physics Shuji Nakamura used the sapphire substrate in 1990s for LED, the demand of sapphire crystal has been growing rapidly.

It drives development of new markets like general lighting, backside lighting in TV-sets, displays, consumer appliances, aerospace and defense, and other applications

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

Properties of sapphire

Physical
Chemical formula	Al₂O₃
Density	3.97 g/cm³
Hardness	9 Mohs
Melting point	2050^oC
Max. use temperature	1800-1900^oC
Mechanical
Tensile strength	250-400 MPa
Compressive strength	2000 MPa
Poisson's ratio	0.25-0.30
Young's Modulus	350-400 GPa
Bending strength	450-860 MPa
Rapture Modulus	350-690 MPa
Thermal
Linear expansion rate (at 293-323 K)	5.0*10^-6K^-1(⊥ C)
Linear expansion rate (at 293-323 K)	6.6*10^-6K^-1(∥ C)
Thermal conductivity (at 298 K)	30.3 W/(m*K)(⊥ C)
Thermal conductivity (at 298 K)	32.5 W/(m*K)(∥ C)
Specific heat (at 298 K)	0.10 cal*g^-1
Electrical
Resistivity (at 298 K)	5.010¹⁸ Ωcm(⊥ C)
Resistivity (at 298 K)	1.3-2.910¹⁹ Ωcm(∥ C)
Dielectric constant (at 298 K, in 10³-10⁹ Hz interval)	9.3 (⊥ C)
Dielectric constant (at 298 K, in 10³-10⁹ Hz interval)	11.5 (∥ C)

Sapphire Applications

Substrates for LED manufacturing
Viewports for vacuum/high temperature/pressure chamber of furnaces, semiconductor equipment etc.
Watch glasses/Windows for bar code reader
Phone, smartphone, smart watch cover screens
Polarized windows for LCD projectors/Xenon lamp windows
Components for infrared optics
Thermocouples protection NMR tubes
Tubes for plasma etching process in semiconductor industry
HPLH pistons /Light guide for thermometry
Dosing and filling pumps in pharmaceutical, cosmetic and food industries.
Medical implants/Endoscope lenses

Products Detail

Process Step

Sapphire body Sapphire rough shape Sapphire CNC engraving and milling
-------> ------->

Company Information

As a prominent manufacturer and exporter who focus on watches and watchparts R&D, manufacturing and sales, we welcome OEM/ODM orders. Our main products including Watches, Watch Parts such as: case, face, glass, straps, bezel inserts, hands, etc., which are all manufactured by high grade raw material and designed in compliance with high quality standard.
We regard "High-quality, Reasonable prices and satisfactory after-sales" as our tenet, offer clients with not-only top notch products but also best after-sale services. All our products are acclaimed for its durability, stylish look and high performance in this domain. Warmly welcome potential buyers to contact us, and looking forward to establishing long term mutually beneficial relationship with you!.

FAQ:
Q1: How can I get the price and consult for product details?
A1: Send enquiry via Email, Skype, Wechat or Call us directly.

Q2: What is your main product? OEM/ODM ?
A2:Thermal interface material, Sapphire Glass products, Die cut service for industrial etc.
&OEM/ODM is available. For details, please kindly contact the sales persons.

Q3: What is your service?
A3: 24 hours online service is our promise.

Q4: How is your quality of products and quality guarantee policy?
A2: 100% full test before shipping and 100% compliance with the request of clients.

Q4: What is the payment method?
A3: T/T, Western Union, L/C, Paypal,Etc.

Q5: What is the delivery time?
A5: Normally 20-40 working days after payment received. But it depends on exactly situation.

Q6: What package do you use for the products?
A6: Safe and standard packing for export shipment (PE film cover, kraft paper/bubble bags parcel, and pack into carton or wooden box).

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