85% ~95%
Unbranded
0.05-50g
Sapphire bezel insert
for watch
ISO9001
Yes
Customized
2050℃
Sapphire
Black Silkprinting Sapphire Bezel Insert with Digit
Why Choose sapphire crystal?
Chemically, sapphire is single crystal aluminum oxide (Al2O3), and is useful in a transmission range from 0.2 - 5.5µm
Sapphire crystal is extremely hard and scratch resistant. It is the hardest of the oxide crystals, being the next strongest material to diamond.
Because of its hardness (second only to Diamond), Sapphires are used in industrial applications such as components for watch crystals and movement bearings, scientific instruments, high-durability windows, and insulating substrates in special purpose solid state electronics
| Bending strength | 320-930Pa |
| Vickers hardness | 1800-2200 |
| Optical transmission | >90% |
| Melting point | 2050℃ |
| Mohs hardness | 9(Next only to diamonds:10) |
| Bevel | 0.1-0.5mm |
| Coating | upon customer request |
Sapphire Crystal Application:
1. for high-class watches
2. for Led
3. for manufacturing equipment of semiconductors
4. for medical equipment
5. for beauty equipment
6. for jewelry pendant
7. other unique products
About sapphire crystal FAQ:
20-25 days