Alumina Ceramic Components

Alumina Ceramic Components

Alumina ceramics have the characteristic of low dielectric constant, low dielectric loss, high insulation strength, high volume resistivity, good bending strength, high stability, high compressive strength, and good cold and hot shock denaturation. It is widely used in thermostats, insulating parts, various thermal equipment, electric appliances, iron structure buildings, shipbuilding, etc. of various small household appliances.
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Product Details

Alumina ceramics have the characteristic of low dielectric constant, low dielectric loss, high insulation strength, high volume resistivity, good bending strength, high stability, high compressive strength, and good cold and hot shock denaturation. It is widely used in thermostats, insulating parts, various thermal equipment, electric appliances, iron structure buildings, shipbuilding, etc. of various small household appliances.

 

Alumina ceramics are divided into various types. There are mainly talc porcelain, high frequency porcelain, mullite, cordierite ceramics, thermal insulation ceramics and 95 alumina ceramics, 99 alumina ceramics. Please have a check as the followings ceramic technical parameters.


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Technical Data Sheet

Name 

99 

porcelain

95 

porcelain

alumina

talc  

steatite

cordierite

Main ingredient

AL2O3≥99% 

AL2O3≥95%

 ZRO2≥94%




Density 

3.85 

3.6

5.9

2.6

2

Physical properties

Water absorption%


00000

Sintering temperature

169016701650


HardnessHV

170016001400

Material properties

Flexural strength4pt 

>3500

>2900

>11000

14065

Compressive strengthKGF/CM2

300002500025000900350

Use temperature ℃

<1500

<1400

<1600




Thermal expansion coefficient

8
7.8
10
7.0-9.0
2.5-3

Thermal characteristics

 10-6/℃


 0-1000℃


Thermal shock resistance T ℃

200220350


Thermal conductivity W/m.k 

31223


 Volume resistivityΩ.cm

>1012  

>1012  

>1012  

>1011

>1012  

Electrical characteristics

 Insulation strength KT/M 

181615


Dielectric constant 1MHZ(E)

9.2-10.59.0-1012.5


 Application-Ceramic

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