High Performance Polished Convex Crystal Glass Watches For Parts Type

Basic Information
Place of Origin: Guangdong, China (Mainland)
Brand Name: Tianzhili
Model Number: sapphire glass
Price: US $5.00
Detail Information
Type: Watches For Parts Material: Sapphire
Size: 1-200mm MOQ: 100pcs
Shape: Custom Shape Surface Treatment: Polished
Service: OEM ODM Surface Quality: 80/50,60/40,40/20
Usage: Sapphire Glass For Watch Coating: AR,AF-Coating
High Light:

convex watch glass


convex sapphire

Product Description



High Performance Polished Convex Crystal Glass Watches For Parts Type




Product Description


  • High thermal conductivity for a non-conductor, even better than copper at cryogenic temperatures
  • High dielectric constant
  • Extremely hard surface
  • High scratch resistance and wear.
  • High electrical resistance
  • Chemical properties of stability



Synthetic sapphire glass is second only to diamond in hardness and despite its name, is not actually glass. It is, in fact, a synthetically produced crystal. Synthetic sapphire crystal – or synthetic sapphire glass – is extremely durable. The stone is typically grown in cylindrical sticks called boules, in a slow, costly and energy intensive process. The transparent material is produced by crystallizing pure aluminium oxide at very high temperatures. Chemically identical to natural sapphire stones, without the color, the round masses that form are sliced into pieces using diamond-coated saws. The discs are then ground and polished for use as watch glass or locket windows. Pandora Lockets are made with synthetic sapphire glass windows that beautifully display and carefully protect the Locket Elements within. The scratch-resistant surface and the exclusive look of the synthetic sapphire glass set Pandora’s Lockets apart from other locket designs and ensure the product is long-lasting.






Property Specification
Thickness 0.5-50mm
Size tolerance 0.02mm
Edge Finish Ground and beveled
Surface Quality 40-20 scratch-dig
Surface Flatness λ/4 @ 633 nm
Parallelism ≤3 arc min (≤0.9 mrad)
Clear Aperture >80% of central diameter
Hardness (Knoop) 1370 kg mm-2
Young's modulus 3.4 x 1011 N m-2
Thermal Limit 22 W m-1 K-1
Thermal expansion coefficient 8.4 x 10-6 K-1


Contact Details

Phone Number : +8617722965647

WhatsApp : +8618606222729