Высокопрочный керамический поршень вала поршня для

Item

Unit

95 Al2O3

99 Al2O3

Physical Characteristics

Heat Resistance

℃

1500

1800

Bulk density

g/cm3

3.6

3.8

Water absorption

%

0

0

Mechanical Characteristics

Flexural strength

Mpa

320

360

Hardness Vickers

Gpa

12.2

15.6

Elastic modulus

Gpa

280

370

Poisson’s ratio

-

0.22

0.23

Thermal  Characteristics

Linear expansion coefficient

(20-5000℃)    10-6/℃

7.1

8

Thermal conductivity

W/(M.K)

16

32

Specific Heat

×10-3J/(KG.K)

0.78

0.9

Electrical Characteristics

Dielectric constant(1MHZ)

-

9

9.9

Dielectric loss angle

×10-4

15

1

Dielectric strength

×106V/m

12

15