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3 Low OH content transparent quartz tube
1.Application field
It is used in high-end lighting and industries with strict requirements on hydroxyl.
2.Product features
The quartz glass tube is melted and drawn by high purity quartz sand with one - step method. The transmittance at 200nm is over 75%. The OH content could be lower than1ppm after vacuum baking.
3.Product type
FDG0306，FDG0506 Low OH content transparent quartz tube
4.Typical dimensions and tolerance
Dimensions and Tolerance | |||||
OD |
WT |
OD Ttolerance |
WT Ttolerance |
Ovality |
Siding |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
Quartz tube and rod | |||||
OD＜10 |
0.5-4 |
1% |
±10% |
1% |
±10% |
10≤OD＜20 |
1-4 |
1% |
±10% |
1% |
±10% |
20≤OD＜40 |
1-5 |
1% |
±10% |
1% |
±10% |
40≤OD＜60 |
1.5-5 |
1% |
±10% |
1% |
±10% |
Note: it can also be made according to customers' special requirements
5.Physical parameter
Density |
Thermal Expansivity |
Softening Point |
Annealing Point |
Deformation Point |
（g/m3 20℃） |
（℃-1 200-300℃） |
（℃） |
（℃） |
（℃） |
2.2 |
5.5*10-7 |
1680 |
1220 |
1120 |
6.Chemical element content typical values
Chemical element content typical values(PPM) | |||||||||||||
Element |
Li |
Na |
Mg |
K |
Ca |
Ti |
Cr |
Mn |
Fe |
Co |
Ni |
Cu |
Al |
Quartz sand type |
(PPM) |
||||||||||||
FD03/FD05 |
0.6 |
0.8 |
0.1 |
0.1 |
0.4 |
1.3 |
0.01 |
0.01 |
0.3 |
0.01 |
0.01 |
0.01 |
15 |
7.OH content
Original OH content |
OH content After Baking |
130-150PPM |
＜2PPM, ＜1PPM |
Note: it can also be made according to customers' special requirements
8.Optical properties
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