 Quartz heaters --UV stop quartz tube |
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¡¾Back to quartz heaters¡¿
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.
¡ùFeatures
It can almost prevent all the UV rays
¡ùApplication
It serves as UV-stop halogen lamp, UV-stop mercury lamp, and the sleeve for UV-stop metal halide lamp.
¡ù 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 |
¡ù Chemical Composition Unit: ppm
Cr |
Ge |
Fe |
Mg |
Ti |
Ca |
Al |
Na |
Li |
K |
OH |
£¼ 0.5 |
£¼ 0.4 |
1.5 |
0.5 |
2.5 |
2.3 |
25 |
2.5 |
0.6 |
2.5 |
1-50 |
¡ù Physical Properties
Density 20 ¡æ kg.m -3 (¡Á10 3 ) |
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¡Á10 5 |
¡ù Spectral Transmission at 1.0mm Thickness
Nm |
£¼ 220 |
230-280 |
290-330 |
315 |
350 |
380 |
590 |
780 |
% |
0 |
£¼ 19 |
0 |
15 |
88 |
92 |
93 |
93 |
