The ignition needle is treated by special material titanium metal surface, aluminum metal steel needle, high temperature crack resistant 95 alumina ceramics

The ignition needle is treated by special material titanium metal surface, aluminum metal steel needle, high temperature crack resistant 95 alumina ceramics

Ceramic ignitionCeramic ignitionCeramic ignitionCeramic ignition

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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