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High Alumina Ceramic Furnace Tubes



High Alumina Ceramic Furnace Tubes


HIGHLION high alumina ceramic tubes are extensively used in various kinds of furnaces and kilns,for examples, high temperature vacuum furnaces,heat treating furnaces,tube furnaces. Many sizes tube are available for stock meanwhile length can cut exactly according to your sizes.


Chemical Composition and Physical Properties

PROPERTY

UNIT

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



High Alumina Ceramic Furnace Tubes Sizes


                                                                    ALUMINA CERAMIC BOTH ENDS OPEN TUBE

OD×ID

mm

Length

(mm)

OD×ID

mm

Length

(mm)

OD×ID

mm

Length

(mm)

0.7×0.3

0.8×0.4

0.9×0.4

1×0.5

1.2×0.6

1.3×0.7

1.4×0.8

1.5×0.8

2×1

3×2

4×3

1000

5×3.5

6×4

7×4.5

8×4

9×6

10×4

10×7

12×4

12×8

14×4

14×10




2500

15×11

18×14

25×19

30×25

60×50

90×80

100×90

110×100

120×110

150×140

   200×190


2500

2500

2000

1500