 Click here for Printable Property Chart
ZIRCONIA TOUGHENED ALUMINA (ZTA)
ZIRCONIA TOUGHENED ALUMINA, (ZTA) is often used in wear applications as an intermediate solution between alumina and zirconia. It offers an increased fracture toughness over alumina with a material cost less than that of zirconia.
|
Property |
ASTM
Method |
Units |
ZTA-14 |
ZTA-20 |
| Color |
- |
- |
off white |
off white |
| Gas Permeability |
- |
- |
gas tight |
gas tight |
 |
| Density |
C 20-97 |
g/cc |
4.17 |
4.24 |
| Hardness |
- |
Mohs Scale |
9 |
9 |
| Water Absorption |
C 20-97 |
% |
0 |
0 |
| Flexural Strength |
F417-87 |
psi |
85,000 |
90,000 |
| Tensile Strength |
- |
psi |
42,000 |
45,000 |
| Compressive Strength |
- |
psi |
375,000 |
400,000 |
| Elastic Modulus |
C848 |
psi x106 |
49 |
49 |
| Shear Modulus |
C848 |
psi x106 |
20 |
20 |
| Poisson's Ratio |
C848 |
none |
0.23 |
0.23 |
|
| C.T.E, 25 - 100°C |
C372-96 |
x10-6/°C |
6.0 |
6.0 |
| C.T.E, 25 - 300°C |
- |
- |
7.0 |
7.0 |
| C.T.E, 25 - 600°C |
- |
- |
7.1 |
7.1 |
Thermal Conductivity,
25°C |
C408 |
W/m-K |
24 |
24 |
Max Use Temperature
(Non-Loading) |
- |
°F |
2730 |
2730 |
| - |
°C |
1500 |
1500 |
|
Dielectric Strength
(.125" Thick) |
D149-97A |
V/mil |
n/a |
250 |
| Dielectric Constant @ 1MHz |
D150-98 |
- |
n/a |
12.5 |
| Dielectric Constant |
D2520-95 |
- |
n/a |
12.4 |
| @GHz |
n/a |
@9.4 |
| Dielectric Loss @ 1MHz |
D150-98 |
- |
n/a |
0.0006 |
| Dielectric Loss |
D2520-95 |
- |
n/a |
0.0005 |
| @GHz |
n/a |
@9.4 |
| Volume Resistivity, 25°C |
D257 |
ohms-cm |
n/a |
>1E +14 |
| Volume Resistivity, 300°C |
- |
- |
n/a |
1E +10 |
| Volume Resistivity, 700°C |
- |
- |
n/a |
4E +08 |
|
|
Note: The information in this data sheet is for design guidance only. STC does not warrant this data as absolute values. Forming methods and specific geometry could affect properties. Slight adjustments can be made to some of the properties to accommodate specific customer requirements. Most of the dense materials in the table are resistant to mechanical erosion and chemical attack. STC has performed ASTM testing qualification for certain compositions, in accordance with ASTM D2442. Please consult our technical staff for appropriate material and specifc test results.
Note: In addition to the above compositions, STC offers a wide range of alternative materials. Please contact one of our applications engineers for material requirements that may not be shown above. |
Click Here if you would like a printable copy of the above chart.
You will need to have Adobe Acrobat Reader. Click Here to download.
|
