High Deep cut off UV block Quartz tube Size can be customized
Quartz materials for outer casing for automobile lamps and other UV protection.
Product Feature：
Cerium-doped quartz glass absorbs all UV-B and UV-C. It has a softening point about 50°C lower than that of conventional transparent quartz glass. Low hydroxyl groups and very small dimensional tolerances. It can meet the requirements of quartz materials for high-end UV protection;
Typical Size:（mm）
| O.D. Fange | O.D. Tolerance | Thickness | WT Tolerance | Out of Round | Siding | Bow |
|---|---|---|---|---|---|---|
| 3<OD≦10 | ±0.10 | 1.0∼2.0 | ±0.15 | 2% | 0.12 | 0.15% |
| 10<OD≦20 | ±0.20 | 1∼2.5 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 20<OD≦30 | ±0.25 | 1.5∼3.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 30<OD≦40 | ±0.35 | 1.5∼4.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 40<OD≦50 | ±0.2 | 2.0∼4.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 50<OD≦60 | ±0.5 | 2.5∼5 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 60<OD≦80 | ±0.7 | 3.0∼5.5 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 80<OD≦100 | ±0.8 | 3.0∼10.0 | ±0.15 | 1.25% | 0.12 | 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 ) |
|---|---|---|---|---|
| 2.1*103 | 5.8*10-7 | 1620 | 1160 | 1060 |
Impurity Value: (ppm)
| Impurity | Na | K | Mg | Li | Ca | Cu |
|---|---|---|---|---|---|---|
| typical value | 1.1 | 1.2 | 0.5 | 0.9 | 1.0 | 0.05 |
OH Content: (ppm)
| Typical Value without Baking | After baking |
|---|---|
| 100 | <2 |
Optical Properties:
