Ultra-high purity quartz tube with customized size
UHP quartz tubes are mainly used in special lighting equipment such as extra high voltage projection lamps, high purity capillary lamps and theater lamps.
Product Feature：
UHP quartz tubes are made of high purity natural quartz sand with a total impurity content of about 10 ppm. The contents of alkali metals and hydroxyl groups are very low. It has stable performance under high temperature and high pressure. Finished lamps have the advantages of small size, high brightness, long life, etc.
Typical Size:（mm）
| O.D. Fange | O.D. Tolerance | Thickness | WT Tolerance | Out of Round | Siding | Bow |
|---|---|---|---|---|---|---|
| 6∼10 | ±0.15 | 2.0∼2.5 | ±0.08 | 0.08 | 0.08 | 0.15% |
Mechanical & Thermal Properties：
| Density（20°C kg/m3） | Thermal Expansion (200 ~300°C C-1) | Softening Point (°C ) | Annealing Poing (°C ) | Strain Point (°C ) |
|---|---|---|---|---|
| 2.2*103 | 5.6*10-7 | 1670 | 1210 | 1110 |
Impurity Value: (ppm)
| Impurity | Na | K | Mg | Li | Ca | Fe | Al | Ti | Cu |
|---|---|---|---|---|---|---|---|---|---|
| typical value | 0.2 | 0.3 | 0.2 | 0.5 | 0.5 | 0.3 | 8.0 | 1.1 | 0.05 |
OH Content: (ppm)
| Typical Value without Baking | After baking |
|---|---|
| 130-150 | <0.5 |
