2" larger diameter Alumina tube is made with high purity Al₂O₃ material. Such an alumina tube can be used at operating temperatures to 1700 ^oC in both oxidizing and reducing atmospheres. Tubes can be evacuated to 10^-4 Torr via turbopump. It proves inert to carbon and refractory metals in many severe situations.

SPECIFICATIONS

Purity	Al2O3 > 99%, SiO2 < 0.25%, CaO+MgO < 0.3%
O.D	50mm +/- 1mm
I.D	40mm +/- 2mm
Tube Length	1000 mm
Detailed dimension drawing
Warning	Do NOT use an alumina tube under a vacuum at a temperature > 1500 °C for a 1-3" tube, and < 1200 °C for a 3.15- 4“ tube Gas pressure shall be < 200 ccm Max heating or cooling rate < 5°C/ minute. Please keep the thermal gradient less than 100°C/ inch to avoid cracking in the multi-zone tube furnace Please use a crucible to separate parts from the inside surface of the tube to avoid thermal shock. Please handle the tube carefully. No warranty for the tube.
Application Notes	Please click here to learn  how to use and maintain Alumina tube in MTI high-temperature tube furnace In order to get longer tube service life, please use quartz or alumina crucible to carry a sample, instead of loading the sample directly inside the tube, please click the picture below to choose one crucible boat:

Inspect your delivery:
Please check the package for damages before accepting delivery.
Should damages be found, please keep all packaging materials, take pictures, and report immediately to carrier/MTI.