GE 214® is a high purity, high transmittance, high temperature material with a low hydroxyl (OH)- content. It is suitable for a broad range of mercury, halogen and other quartz lamp applications which is the worldwide standard for clear fused quartz lamp tubing.
| GE 214®: Fused Quartz Tubing | ||
|---|---|---|
Glass Code: GE 214® Fused Quartz Tubing |
214 |
|
type |
Fused Quartz |
|
Color |
Clear |
|
Principal Use |
High Temperature |
|
Thermal Expansion 10-7cm/cm/°C |
20 - 320°C |
5.5 |
Thermal Conductivity |
W/m °C |
1.4 |
Specific Heat |
J/kg°C |
670 |
Softening Point |
°C |
1683 |
Annealing Point |
°C |
1215 |
Strain Point |
°C |
1120 |
Design Tensile Strength (4.8 x 107 Pa) |
7000 psi |
|
Design Compression Strength (> 1.1 x 109 Pa) |
160,000 psi |
|
Hardness |
5.5 - 6.5 Moh's Scale 570 KHN 100 |
|
Density kq/m3 |
2.2 |
|
Young's Modulus (10.5 x 10) |
6psi |
|
Constringency |
(Nu) |
67.56 |
Velocity of Sound - Shear Wave |
3.7 x 103 m/s |
|
Velocity of Sound / Compression Wave |
5.9 x 103 m/s |
|
Sonic Attention |
db/m MHz |
< 11 |
Dielectric Properties (1 MHz 20°C) |
Strength |
5 x 10 x 7V/m |
Dielectric Constant |
3.75 |
|
Loss Factor |
< 4 x 10-4 |
|
Refractive Index |
1.4585 |
|
| Permeability Constants 700°C (cm3 mm/cm2 sec cm of Hg) |
|||
|---|---|---|---|
Helium |
Hydrogen |
Deuterium |
Neon |
210 x 10-10 |
21 x 10-10 |
17 x 10-10 |
9.5 x 10-10 |