English
Sign in
| Price | 500USD-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 |
| Drawing | Need 3D | Crystal Type | Sapphire |
| Place of Origin | Chongqing, China | Whole Set | Top glass and case |
| Shape | Customized | Use | For watch |
| Packaging Details | Caron, Air bubble films | Color | Transparent |
| Material | Sapphire Crystal | Supply Ability | 1000PCS per month |
| Case Diameter | customized | Payment Terms | T/T, Western Union |
| Growing Method | CZ | Case Shape | Round |
| Packing | Carton | Price | 500USD-10000USD |
| Delivery Time | According to quantity | Delivery port | Chongqing |
| OEM | Yes | Minimum Order Quantity | 5pcs |
Synthetic Sapphire Sapphire Watch Case with High Wear Resistance
Sapphire—a material that is almost as hard as diamond—has been used in watches for years as the crystals over the dials (in part due to being extremely scratch-resistant). It’s not the easiest material to work with, due to its extreme toughness. It can be difficult to cut and mold, but boundaries are pushing by cutting blocks of it into unique and fun shapes.Everything from traditional round cases to tonneau, square, and even wildly unexpected shapes that resemble car engines or jets.
| 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.
