Sapphire Glass
Sapphire glass is durable, hard, chemically stable, and an excellent material for sight glasses in harsh environments.
Sapphire glass can be cleaned multiple times without damage! It is resistant to temperatures up to 2000°C and is used in applications involving large pressure differences. Due to high production costs and extreme hardness during grinding, only small-sized components are used.
| PARAMETER | VALUE |
| Density | 3,98g /cm3 |
| Hardness | 9 (skala Moh’a) |
| Softening point | 2040oC |
| Thermal expansion coefficient | 6,7 x 10-6/oC parallel to C-axis 5,0 x 10-6/oC perpendicular to C-axis |
| Thermal conductivity | 46,06 W / m oK przy 0oC |
| Compressive strength | GPa 2,0 |
| Flexural strength | daN/mm2 35 do 39 |
| Tensile strength | MPa 400 przy 25oC MPa 275 przy 500oC MPa 345 przy 1000oC |
| Dielectric constant | 11,5 (103 – 109 Hz, 25oC parallel to C-axis 9,3 (103 – 109 Hz, 25oC perpendicular to C-axis |
| Resistance | 1016 ohm – cm (25oC) 1011 ohm – cm (500oC) 106 ohm – cm (1000oC) |
| Structure | a = b = 4,77 A c = 13,04 A |
We cooperate with scientific institutes.
For many years, we have held the “FIRMA PRZYJAZNA NAUCE” (Science-Friendly Company) certificate.
