Green Sapphire Crystal Watch Case Al2O3 Single Crystal Customized Size
Brand Name:zmkj
Model Number:Green sapphire watch case
Minimum Order Quantity:10PCS
Delivery Time:4-6weeks
Payment Terms:T/T, Western Union
Place of Origin:CHINA
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Verified Supplier
Location:
Shanghai Shanghai China
Address:
Room.1-1805,No.1079 Dianshanhu Road,Qingpu Area Shanghai city, China /201799
Supplier`s last login times:
within 38 hours
Product Details
Company Profile
Product Details
Blue/ Green/ Pink/ Red/ White Sapphire single crystal watch glass case/ Sapphire optical glass for watch lens
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 | 2050oC |
| Max. use temperature | 1800-1900oC |
| 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) |
| 6.6*10-6K-1(∥ C) | |
| Thermal conductivity (at 298 K) | 30.3 W/(m*K)(⊥ C) |
| 32.5 W/(m*K)(∥ C) | |
| Specific heat (at 298 K) | 0.10 cal*g-1 |
| Electrical | |
| Resistivity (at 298 K) | 5.0*1018 Ω*cm(⊥ C) |
| 1.3-2.9*1019 Ω*cm(∥ C) | |
| Dielectric constant (at 298 K, in 103-109 Hz interval) | 9.3 (⊥ C) |
| 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).
Green Sapphire Crystal Watch Case Al2O3 Single Crystal Customized Size
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