90-99.7% High Alumina Corundum Pipe Tube
1.High purity: Al2O3> 99%good chemical corrosion resistance
2.High density
3.ISO9001
WITH 20 YEARS GOOD EXPERIENCE IN MANUFACTURING 90-99.7% HIGH ALUMINA CORUNDUM PIPE,STICK,CRUCIBLE,PLATE AND BOAT ETC.
High-purity Alumina pipe, 99% corundum ceramic tube is suitable for sample analysis and melt of laboratory metal, non-metallic materials,and furnace kiln refractory pipe,max.working temperature 1800 Celsius Degree.
Alumina Tube Pipes'features:
1, High purity: Al2O3> 99%, good chemical corrosion resistance
2, Good temperature endurance, long-term use at 1600 °C, 1800 °C short-term
3, Good rapid thermal shock resistance, not easy to burst
4 , Slip Casting with high density
Specification | Unit | 1 | 2 | 3 |
Al2O3 | % | 99.7 | 99.3 | 85 |
SiO2 | % | 0.1 | — | — |
Density | g/cm3 | 3.95 | 3.88 | 3.2 |
Absorbing water rate | % | 0 | 0.01 | 0.2 |
Compression strength | MPa | 450 | 350 | 200 |
20°C | Torr/L.sec | 10-11 | 10-11 | 10-11 |
20—1000°C | mm.10-6/°C.m | 8.6 | 8.2 | 8.2 |
Heat-conduction rate | W/m.k | 25 | 25 | 25 |
Dielectric strength | KV/mm | 20 | 20 | 15 |
20°C | Ohm/cm | 1014 | 1014 | 1014 |
Dielectric constant | 1000°C MΩ | ≥0.08 | ≥0.08 | ≥0.08 |
| 1300°C MΩ | ≥0.02 | ≥0.02 | ≥0.02 |
Heat resistant shaking Use temperature at most |
| 1550°C 6times: no crack | 1550°C6times: no crack | 1300°C 3times: no crack |
°C | 1900 | 1800 |
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