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3.25" x 40" (82 OD x 70 ID x 1000mm L) Alumina Ceramic Tube (99.8%) High Purity - TA-80D-M1000-LD

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4" OD larger diameter Alumina tube is made in the USA with high purity 99.8% ( 998) Al2O3 material. 998 alumina tube can be used at operating temperatures to 1800 oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10-7 Torr at room temperature. 998 alumina tube proves inert to carbon and refractory metals in many severe situations: SPECIFICATIONS

Purity Al2O3 > 99.8%, Made in USA
Density > 3.91 g /cm3
I.D 2.756" +/- 0.110    (70 +/- 2.79 mm)
O.D 3.25" +/- 0.04    (81 +/- 1 mm)
Length 40 " (1000 mm)
Max. working temperature 1800 oC
  • Please don't use alumina tube under vacuum at temperature > 1500 oC when vertically-mounted and >1400 oC when horizontally-mounted
  • Mcdanel strongly recommends keeping ramp rate less than 100oC/ hour at 400 - 1700 oC range
  • Please keep thermal gradient less than 100oC/ inch to avoids cracking
  • Parts should not be placed directly onto the inside surface of a hot furnace tube increase thermal shock
  • Please handle the tube carefully. Warranty does not include tube (but only for machine MTI provided)
Application Notes Ceramic Crucibles ( Alumina, Quartz and Zirconia etc )

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