2" O.D alumina tube can be used at operating temperature up to 1700 ^oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10^-7 Torr. It proves inert  for carbon and refractory metals in many severe situations.

SPECIFICATIONS

Purity	Al2O3 > 95%, SiO2 < 0.25%, CaO+MgO < 0.3%
O.D	2" +/- 0.05 (51.5 mm)
I.D	1-2/3" +/- 0.05 (41.8 mm)
Tube Length	700 mm
Detailed dimension drawing
Warning	Do NOT use an alumina tube under a vacuum at a temperature > 1500 oC. Max heating or cooling rate < 5oC/ minute. Please keep the thermal gradient less than 100oC/ inch to avoid cracking. Please 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 the Alumina tube in MTI high-temperature tube furnace In order to get longer tube service life, Please use a quartz or alumina crucible to carry the 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 the carrier/MTI.