3" x 40" (76 OD x 67 ID x 1000mm L) Alumina Ceramic Tube - EQ-TA-76D-M1000

3.0" OD larger diameter Alumina tube is made of high purity 99.5% Al₂O₃ material. Such an alumina tube can be used at operating temperatures to 1750 ^oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10^-7 Torr at room temperature. SPECIFICATIONS

Purity	Al2O3 > 99%, SiO2 < 0.25%, CaO+MgO < 0.3%
O.D	3.00" +/- 0.04    ( 76 +/- 1 mm)
I.D	2.64" +/- 0.04    ( 67 +/- 1 mm)
Tube Length	1000 mm
Detailed dimension drawing
Purity	》99.5%
Max. Working Temperature	1750oC  ( unloaded  without vacuum )
Warning	Please don't use an alumina tube under vacuum at temperature > 1500 oC. Please always keep the heating or cooling rate less than 5oC/ minute. Please keep the thermal gradient less than 100oC/ minute 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 quartz or alumina crucible to carry the sample, instead of loading sample directly inside the tube, please click the picture below to choose one crucible boat: