This cerium-added quartz tube can effectively prevent all radiation of UV-B and UV-C ultraviolet and most radiation of UV-A ultraviolet .It is the best materials to prevent UV with best transparent performance. It can be used to make quartz halogen lamp , gas discharge lamp and other UV lamp-house , which will effectively protect human and object from hurt of ultraviolet and maintain the best efficiency of light transmission.
Dimensional Tolerance
|
Range of OD |
OD |
WT |
Siding |
Out of Round |
Bow/1220mm |
|
¡Ü6mm |
¡À2.0% |
¡À10% |
12% |
2.0% |
2.5mm |
|
6.00-15.00mm |
¡À1.25% |
¡À8% |
10% |
1.5% |
2.5mm |
|
15.00-20.00mm |
¡À1.25% |
¡À10% |
15% |
1.5% |
2.5mm |
|
20.00-25.00mm |
¡À1.25% |
¡À10% |
15% |
1.5% |
3.0mm |
|
25.00-30.00mm |
¡À1.35% |
¡À12% |
15% |
1.5% |
3.0mm |
Chemical Composition Unit: ppm
|
Cr |
Ge |
Fe |
Mg |
Ti |
Ca |
Al |
Na |
Li |
K |
OH |
|
£¼0.5 |
£¼0.4 |
1.5 |
0.5 |
2.5 |
2.3 |
25 |
2.5 |
0.6 |
2.5 |
1-50 |
Physical Properties
|
Density 20¡æ kg.m-3 (¡Á103) |
2.2 |
|
Coefficient of expansion 25-300¡æ ¡æ-1 (¡Á10-6) |
0.58 |
|
Softening point ¡æ |
1620 |
|
Annealing point ¡æ |
160 |
|
Strain point ¡æ |
1060 |
|
Youngs modulus Pa |
7.1¡Á105 |
Spectral Transmission at 1.0mm Thickness
|
Nm |
£¼220 |
230-280 |
290-330 |
315 |
350 |
380 |
590 |
780 |
|
% |
0 |
£¼19 |
0 |
15 |
88 |
92 |
93 |
93 |
