ALUMINA TUBES

Ultra High Purity, 99.7% Alumina tubes.
Max Working Temperature of 1700°c.
Wide Range of Sizes in Stock.
Available for Next Day Delivery!

CUSTOM SIZES

All Alumina Tubes come in 1m lengths.
Can be cut to individual lengths of your choosing.
Custom made sizes available on request.

GET A QUOTE

For stock or custom sized tubes.
Get in touch to order yours today!

Our ultra high purity alumina tubes are available with different shaped ends and bores, they are split into the following categories

Alumina Tubes 6

Single Bore

Single Bore alumina tubes, 99.7% purity and 1 meter in length with a single bore all the way through.

Alumina Tubes 3 - Twin Bore

Twin Bore

Twin Bore alumina tubes, 99.7% purity and 1 meter in length with two bore’s, evenly spaced, all the way through.

Alumina Tubes 2 - Four Bore

Four Bore

Four Bore alumina tubes, 99.7% purity and 1 meter in length with four bores, evenly spaced, all the way through.

Alumina Tubes 9 - Closed One End

Closed One End

Closed One End alumina tubes, 99.7% purity and 1 meter in length with an open end and a closed off rounded end.

MATERIAL INFORMATION

Almath Crucibles offer a variety of Alumina Tubes. Our Ultra High Purity tubes are made from 99.7% recrystallized Alumina and have a max operating temperature of 1800°C, making them ideal for high temperature applications.

Our high purity alumina (Al2O3) ceramics are purpose built to perform across a wide range of high temperature applications. Recrystallized alumina is used in the production of our tubes as the material offers impressive thermal shock resistance, this is due to the larger grain size (up to 200mm is advantageous).

Our tubes show considerable resistance to chemical attack due to the lack of glassy phases that tend to determine corrosion resistance.

The electrical and dielectrical properties of the material generally improve with increased purity. Electrical resistance is greatest and dielectrical loss factor is lowest in materials of highest alumina content.

High purity Alumina produces a dense and essentially single-phase ceramic on sintering. Grain growth during sintering can be controlled by small additions of MgO up to 0.05%. Our product usually contains a small amount of closed porosity but this can be kept below 0.5% using modern firing techniques.

See below our full list of alumina tubes held in stock, available for next day delivery.

Product CodeExternal Diameter (mm)Inside Diameter (mm)External Length (mm)Open / Closed EndedSingle / Twin BoreView Product
ALM102TWIN
12 x 0.2mm1000Open Both EndsTwin
ALM105
10.51000Open Both EndsSingle
ALM125TWIN
1.252 x 0.1mm1000Open Both EndsTwin
ALM152TWIN
1.52 x 0.2mm1000Open Both EndsTwin
ALM152FOUR
1.54 x 0.2mm1000Open Both EndsFour
ALM1506
1.50.61000Open Both EndsSingle
ALM202TWIN
22 x 0.2mm1000Open Both EndsTwin
ALM21
211000Open Both EndsSingle
ALM2505FOUR
2.54 x 0.5mm1000Open Both EndsFour
ALM305FOUR
34 x 0.5mm1000Open Both EndsFour
ALM308TWIN
32 x 0.8mm1000Open Both EndsTwin
ALM315
31.51000Open Both EndsSingle
ALM32
321000Open Both EndsSingle
ALM408FOUR
44 x 0.8mm1000Open Both EndsFour
ALM41TWIN
42 x 1mm1000Open Both EndsTwin
ALM43
431000Open Both EndsSingle
ALM512TWIN
52 x 1.2mm1000Open Both EndsTwin
ALM52
521000Open Both EndsSingle
ALM613TWIN
62 x 1.3mm1000Open Both EndsTwin
ALM613FOUR
64 x 1.3mm1000Open Both EndsFour
ALM62
621000Open Both EndsSingle
ALM64
641000Open Both EndsSingle
ALM75
751000Open Both EndsSingle
ALM82TWIN
82 x 2mm1000Open Both EndsTwin
ALM85
851000Open Both EndsSingle
ALM85COE
851000Closed One EndSingle
ALM102FOUR
104 x 2mm1000Open Both EndsFour
ALM106
1061000Open Both EndsSingle
ALM107
1071000Open Both EndsSingle
ALM124TWIN
122 x 4mm1000Open Both EndsTwin
ALM128
1281000Open Both EndsSingle
ALM138
1381000Open Both EndsSingle
ALM1410
14101000Open Both EndsSingle
ALM1510
15101000Open Both EndsSingle
ALM1611
16111000Open Both EndsSingle
ALM1611COE
16111000Closed One EndSingle
ALM1713
17131000Open Both EndsSingle
ALM1814
18141000Open Both EndsSingle
ALM2015COE
20151000Closed One EndSingle
ALM2016
20161000Open Both EndsSingle
ALM2217
22171000Open Both EndsSingle
ALM2316
23161000Open Both EndsSingle
ALM2418
24181000Open Both EndsSingle
ALM2418COE
24181000Closed One EndSingle
ALM2620
26201000Open Both EndsSingle
ALM3023
30231000Open Both EndsSingle
ALM3023COE
30231000Closed One EndSingle
ALM3224
32241000Open Both EndsSingle
ALM3528
35281000Open Both EndsSingle
ALM3830
38301000Open Both EndsSingle
ALM3830COE
38301000Closed One EndSingle
ALM3832
38321000Open Both EndsSingle
ALM4234
42341000Open Both EndsSingle
ALM4735
47351000Open Both EndsSingle
ALM4840
48401000Open Both EndsSingle
ALM5848
58481000Open Both EndsSingle
ALM6051
60511000Open Both EndsSingle
ALM6457
64571000Open Both EndsSingle
ALM7060
70601000Open Both EndsSingle
ALM7064
70641000Open Both EndsSingle
ALM8070
80701000Open Both EndsSingle
ALM8575
85751000Open Both EndsSingle
ALM9080
90801000Open Both EndsSingle

For a bespoke solution or to enquire about volume discounts, please get in touch.

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