Alumina cerramic brick lining

   
  Alumina Ceramic Alumina cerramic brick lining

Alumina ceramic rollers

Ceramic alumina tube , alumina content 60%- 99.7%,White or Ivory ,Wear-resisting and acidproof alkali corrosion , High temperature (1600-1700 degree centigrade). Good chemical stability,high insulation, strong adsorption capacity, is a nice electrical insulation and wear-resisting material.

Application : Widely used in lamps and lanterns, electronic appliances, blast nozzle, auto parts, wear-resistant parts of insulating material, etc

Product Inf.:

Al2O3 content 

%

70-75

85

95

99.7

Density 

(g/cm3)

3.0

3.4

3.7

3.9

Bending Strength

(Mpa)

85N/MM2

300

364

450

Hot coefficient of expansion

 (20O°C-80O°C) 

6

7

7.6

8

Thermal Conductivity 

(W/(m.R))

17

18

20

35

Dielectric Strength 

(kv/mm)

9

10

11

12

Working Temperature 

 (Long time use)

1300

1400

1600

1750

Water Absorption 

%

5

<0.2

<0.2

<0.1-0.2

Specification:

Dimension Outer dia. mm Inner dia.mm Length mm Remark
Item 
Thermocouple protection tube 7-120 1-110 10-2500

If you need others,we can

customize for you.

Insulated tube Single hole 2-120 1-110 10-3900
(inner core) Double holes 1-10 0.4-2 10-2500
  Four holes 2-10 0.5-2 10-2500

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