Performance For Industrial Ceramic

Item                     

      Unit         

95Al₂O₃             

96 Al₂O₃             

99 Al₂O₃             

Physical Characteristics              

Heat resistance

℃

1500

1550

1800

Bulk density                 

g/cm³

3.6

3.6

3.9

Water absorption            

%

0

0

0

Mechanical Characteristics    

Flexural strength               

Mpa

320

340

360

Hardness vickers             

Gpa

12.2

13.5

15.6

Elastic modulus               

Gpa

280

320

370

Poisson’s ratio                     

0.22

0.23

0.23

Thermal Characteristics           

Linear expansion coefficient             

(20-500℃) 10^-6/℃

7.1

7.2

8

Thermal conductivity          

w/(m.k)

16

24

32

Specific Heat                    

*10^-3J/(kg*K)

0.78

0.78

0.9

Electrical Characteristics         

Dielectric constant (1MHZ)

-

9

9.4

9.9

Dielectric loss angle           

*10^-4

15

5

1

Dielectric strength            

*10⁶V/m

12

15

15