| Model: | DZFG |
|---|---|
| Brand: | Duchin |
| Origin: | Made In China |
| Category: | Electronics & Electricity / Electronic Instrument / Meter & Instrument Parts |
| Label: | 99%Al2O3 tube , thermocouple pipe , Ceramic tube |
| Price: |
US $8.14
/ pc
|
| Min. Order: | 1 pc |
| Live Chat: | Last Online:25 May, 2015 |
Specification
Maximum temperature range 3200F
Fair shock resistance, preheating recommended
Resists chemicals, will not contaminate platinum
Impervious to gasses at high temperature
Design
Unglazed. Admissible tolerance of the wall thickness is in compliance with DIN 40680 Part 1,
degree of accuracy: Fine, with the following specifications: A straight rod, diameter 0.8
x (d1-2s), must be able to be inserted to the bottom of the sheath tube. The rounded bottom of the
sheath tube uniformly becomes the cylindrical section of the sheath tube.
Selection table
|
Performance index |
||||||||
|
AL2O3 Purity % |
60 |
75 |
80 |
85 |
92 |
95 |
99 |
99.7 |
|
Volume density
|
3.0 |
3.1 |
3.3 |
3.4 |
3.6 |
3.7 |
3.81 |
3.85 |
|
Flexural strength
|
205 |
280 |
215.7 |
230 |
312 |
304 |
340 |
370 |
|
Expansion coefficient
|
7.1 |
7.6 |
7.6 |
7.6 |
7.5 |
7.3 |
7.6 |
7.6 |
|
Thermal conductivity
|
16 |
17 |
17 |
17 |
18 |
20 |
34 |
35 |
|
Insulation intensity
|
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
|
Volume resistivity
|
≥1014 |
≥1014 |
≥1014 |
≥1014 |
≥1014 |
≥1014 |
≥1014 |
≥1014 |
|
300°C |
≥1013 |
≥1013 |
≥1013 |
≥1013 |
≥1013 |
≥1012 |
≥1010 |
≥1010 |
|
Long-use temperature (°C) |
1350 |
1000 |
1250 |
1290 |
1390 |
1480 |
1600 |
1700 |
|
Moh’s hardness |
7.5 |
7.5 |
7.5 |
7.5 |
8.5 |
8.8 |
9 |
9 |
|
Refractoriness |
1800 |
1700 |
1800 |
1850 |
1920 |
2000 |
2030 |
2040 |
Dimensional stability
The sheath tube is horizontally clamped into the tube furnace used for thermal shock resistance testing
and is then heated to themaximum permissible continuous temperature. This procedure lasts for 30
minutes.
More Images
