3.15" OD larger diameter Alumina tube is made of high purity 95% Al₂O₃ material. Such an alumina tube can be used at operating temperatures to 1700 ^oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10^-7 Torr at room temperature.

SPECIFICATIONS

Purity	Al2O3 > 95%, SiO2 < 0.25%, CaO+MgO < 0.3%
O.D	3.15" +/- 0.04    (80.4 +/- 1 mm)
I.D	2.93" +/- 0.04    (74.5 +/- 1 mm)
Tube Length	1200 mm
Detailed dimension drawing
Max. Working Temperature	1700 °C (3092°F)
Purity	> 95%
Warning	Please don't use an alumina tube under a vacuum at a temperature > 1500 oC. Please always keep the heating or cooling rate less than 5oC/ minute. Please keep the thermal gradient less than 100oC/cm to avoid cracking. Please handle the tube carefully. No warranty for the tube.
Application Notes	Please click here to learn how to use and maintain an 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 carrier/MTI.