86-0533-2830226
Your location:Home > Products > Thermocouple,Heater Tube > Alumina Tube Alumina Tube
Alumina Protection Tubes With One End Closed


Thermocouple Alumina Protection Tubes With One End Closed


HIGHLION can produce and supply the alumina thermocouple protection tubes,the alumina content include 95%,99%,995%,997%, the tube usual outer diameter is 3mm to 30mm,the length max 2500mm, the wall thickness from 0.5mm to 6mm.



Advantages:

@Strictly dimensional tolerance

@Good chemical corrosion resistance

@1800℃ Higher temperature resistance

@Very good thermal shock resistance



Max Temperature Resistance

85% Al2O3

1400℃

95% Al2O3

1500℃

99% Al2O3

1600-1800℃

99.5% Al2O3

1800℃



Alumina Ceramic Thermocouple Protection Tubes Common Sizes

6X4X700

10X7X650

15X11X1000

7X5X1000

10X7X700

17X13X1125

8X5X470

10X7X800

18X12X900

8X5X650

10X7X1030

18X12X1100

8X5X800

12X8X650

20X15X650

10X6X800

12X8X800

20X15X800

10X6X1000

13X9X1000

20X15X1050

10X6X1250

15X10X1100

24X18X550

10X7X400

15X10X1000

24X18X650

10X7X500

15X11X 500

24X18X800

10X7X600

15X11X700

24X18X1500


Other sizes are also available, we can produce according to customers’ detailed requirements.


Detailed Specifications:


PROPERTY

UNIT

HIGHLION ALUMINA CERAMIC 

Type to DIN EN 60672-3

 

C530

C610

C795

C799

Al2O3 content

%

78

62

95

99.7

Specific gravity

g/cm3

2.5

2.7

3.68

3.82

Water absorption

%

8-12

0

0

0

Hardness

Mohs

6

8

9

9

Modulus of elasticity

Gpa

 

100

280

300

Flexural strength

N/mm2

30

120

280

300

Coefficient of linear expansion

20-100℃

20-300℃

20-600℃

20-1000℃

 

 

 

×10-6/℃

 

3.5-5

3.5-5

4-6

4-7

 

5-6

5-6

5-7

5-7

 

5-7

6-7.5

6-8

7-9

 

5-7

6-8

7-8

7-9

Specific heat (20-100)℃

J/kgK

800-900

850-1050

850-1050

850-1050

Thermal conductivity

W/mk

1.4-2

4-6

16-28

19-30

Maximum thermal stress

K

350

150

140

150

Dialectric strength

KV/mm

 

17

15

17

Max. Temp. Use

1500

1500

1550

1650

Chemical  resistivity

 

satisfactory

Good

Good

Good

Thermal shock resistance

 

Very good

Medium good

medium

Medium