Price | 1000USD-10000USD |
MOQ | 5pcs |
Delivery Time | According to quantity |
Place of Origin | Chongqing, China |
Packaging Details | Caron, Air bubble films |
Payment Terms | T/T, Western Union |
Supply Ability | 1000PCS per month |
Place of Origin | Chongqing, China | Shape | Round,square or other shape |
Whole Set | Top Glass And Case | Use | Watch case, watch glass |
Packaging Details | Caron, Air bubble films | Color | Blue,red,yellow, transparant |
Material | Sapphire | Supply Ability | 1000PCS per month |
Special Features | Sapphire Crystal Exhibition Caseback | Payment Terms | T/T, Western Union |
Growing Method | CZ | Price | 1000USD-10000USD |
Delivery Time | According to quantity | Delivery port | Chongqing |
OEM | Yes | Dial Color | optional |
Minimum Order Quantity | 5pcs | Features | Scratch-resistant, Anti-reflective coating, Date display |
Hexagonal Crystal System Sapphire Watch Case for Stable Chemical Properties
The sapphire crystal is not a glass but rather a synthetic material known for its exceptional resistance to wear, transparency, and high-temperature tolerance, making it an ideal choice for crafting luxury watches. Composed of pure aluminum oxide, it undergoes a process of melting and crystallization at elevated temperatures to form a single crystal structure due to its remarkable hardness and durability. This is why sapphire glass stands as one of the crucial components in watch casings.
Material: Synthetic sapphire are real sapphires grown in labs. They are created by duplicating the environmental conditions that naturally mined stones are formed within. Lab-created sapphires are chemically identical to mined sapphires, but they are produced in a laboratory setting. Synthetic sapphires are the hardest of all known oxide crystals, second only to diamond in hardness.
Property | Specifications |
Thickness | 0.5-200mm |
Size Tolerance | ±0.01 |
Edge Finish | Ground and beveled |
Surface Quality | 40-20 scratch-dig |
Surface Flatness | λ/4@633nm |
Parallelism | ≤3 arc min(≤0.9mrad) |
Clear Aperture | >80% of central diameter |
Hardness(Knoop) | 1370 kg/mm2 |
Young's modulus | 3.4*1011N/m2 |
Thermal Limit | 22W/m/K |
Thermal expansion coefficient |
8.4*10-6/K |
FATURES
1. High mechanical strength: the permeable infrared window material should have sufficient strength to withstand the high-speed movement of the speed pressure load;
2.
Good
thermal
stability:
the
permeable
infrared
window
material
should
be
able
to
withstand
the
temperature
shock
caused
by
pneumatic
heating
and
height
changes,
transmission
ratio
and
refractive
index
should
not
change
significantly
with
the
change
of
temperature;
3.
Good
chemical
stability:
through
infrared
window
material
exposed
to
air,
should
be
able
to
prevent
the
atmospheric
salt
solution
or
corrosion
gas
corrosion,
and
not
easy
to
moisture;
4.
High
optical
transmission
rate,
must
be
able
to
effectively
transmit
ultraviolet
to
medium
infrared
radiation;
5.
Good
optical
characteristics,
small
optical
scattering
and
good
uniformity
of
refractive
index;
Meets
large
window
requirements.
Why US?
1. We’re the rare source manufacturer of color sapphire boule, and the most professional factory of sapphire processing, especially the special watch case.
2. We have our own sapphire grown equipent with CZ and KY method.
3. Professional customized production according to the drawing provided by clients.
4. Precision work of sapphire processing and polishing.
5. Experienced technicians and skilled workers.
FQA
1. Are you a trading company or factory?
We are a professional factory of sapphire products, also a trading company .
2. Can you do customized products?
Yes, we specialized in customized production or OEM work.
CAD,3D drawing are needed.
3. Could you provide samples?
Yes, we could provide samples with a charge, but if you place the order with a quality above 100pcs, the sample charge will be refunded.
4. What’s the delivery time?
It depends on the type of products and the quality.
For watch case, the regular time is around 5-8 weeks for 200pcs according to the difficulty of the processing.
5. How about the payment?
T/T payment is prefered.
6. How about the delivery?
Mostly by air, like DHL, Fedex.