Factory price 95% purity 0.1mm to 100mm zirconia ceramic balls and beads for grinding and milling

Item 

Unit                  

99 Al₂O₃ 

ZrO₂

Physical Characteristics   

Bulk density                  

g/cm³

3.9

6.05

Water absorption              

%

0

0

Mechanical Characteristics   

 Flexural strength 

Mpa

360

1000

Hardness Vickers          

Gpa

15.6

89

Elastic modulus    

Gpa

370

200

Poisson’s ratio     

-

0.23

0.31

Thermal Characteristics     

Linear expansion coefficient

(20-5000°C) 10^-6/0°C

8

10

Thermal conductivity

w/(m·k)

32

2.5

Specific Heat        

×10^-3J/(kg·K)

0.9

0.5

Electrical Characteristics 

Dielectric constant (1MHZ

-

9.9

N.A.

Dielectric loss angle    

×10^-4

1

N.A.

Dielectric strength       

×10^-6V/m

15

N.A.

Pressed Ball

Ø30, Ø40, Ø50, Ø60, Ø70, Ø80, Ø90, Ø100, Ø110, Ø120

Rolled Ball

Ø0.5, Ø1, Ø2, Ø3, Ø6, Ø8, Ø10, Ø13, Ø20, Ø30, Ø40, Ø50, Ø60, Ø70

Cylindrical Ball

Ø20X20, Ø25X25, Ø30X30, Ø40X40, Ø50X50, Ø60X60