Due to it’s hardness, Ceramic (%99.5) sealing materials offer excellent wear characteristics. It is a chemically inert marterial and can be applied to nearly any product. However ceramic can not handle termal shocks.
|
Capability, unit |
Alumina ceramic |
Alumina ceramic |
|
Content |
Al2O3 (99%) |
Al2O3 (95%) |
|
Density g3/cm |
3.9 |
3.7 |
|
Flexural Strength Gpa |
380 |
330 |
|
Knoop Hardness |
2200 |
2200 |
|
Bending Strength Mpa(kpsi) |
300(43) |
260(38) |
|
Compression Strength Mpa(kpsi) |
3450(500) |
1725(250) |
|
Fracture toughness Mpam1/2 |
2.5 |
2.5 |
|
Thermeal Expansion Coeff. 1/0k |
7.6×10-6 |
7.3×10-6 |
|
Speciffic heat Joule/g。0k |
20 |
18 |
|
Specific heat, Joule/g |
0.9 |
0.9 |
|
Heat resistance(in the air), ℃ |
1600 |
1500 |