|
|
| |
|
 |
Features |
| |
|
|
| • |
KNC is a custom ceramics product that corresponds according to the demanded shape. |
| • |
Complex 3D shape forming available by KOA original forming process and combination of hole, step, concave and convex, chase, thread possible. |
| • |
Material applies either alumina 95% or steatite. |
| • |
Features heat resistance, chemical resistance, anti-wear, insulation characteristic of ceramics, which enables to be used for various purpose Applications under various environment. |
|
| |
|
|
Applications |
| |
|
|
| • |
Protective tube and Insulation tube of Sensor, Electric components and heater. |
| • |
Industrial mechanical parts |
| • |
Structure parts of civil engineering |
|
| |
| |
KNC |
|
3333 |
| |
 |
|
|
| |
Product Code |
|
KOA
Ref.No. |
| |
|
|
|
|
|
| |
|
|
|
Characteristics of Material |
 |
| Item |
Characteristics |
Material |
Al2O3 |
MgO, SiO2 |
Alumina content(%) |
95 |
— |
Color |
White |
Apparent density |
3.6 |
2.8 |
Water absorption |
0 |
0 |
Transverse strength |
 330 |
139 |
Vickers hardness |
1500 |
— |
Line expansion coefficient |
|
|
Dilectric constant(at 1MHz) |
9 |
6.2 |
Dielectric tangent |
8×10-4 |
13×10-4 |
Volume resistibity value |
21014A |
1013 |
Dielectric strength |
18 |
20 |
| Above value is the reference value by test piece measurement and changes depending on product style. |
Polishing processing
The surface characteristic depending on use purpose is obtainable by polishing processing. |
| Finish turning |
Surface roughness |
|
No polishing |
Ra 1.0 - 2.0µm |
|
Normal abrasive |
Ra 0.4 - 1.0µm |
|
Gloss grinding |
Ra 0.2µm max. |
|
KOA's Al2O3 95% material
|
|
Application Notes
Brush up your circuit
Basic Knowledge
800
