Please note that the information set forth herein is offered for comparison only, and is not to be construed as absolute engineering data or constituting a warranty or representation for which we assume legal responsibility.
|Property||Unit||Test||Zirconia Toughened Alumina||Partially Stabilised Zirconia||Fully Stabilised Zirconia|
|Elastic Modulus||GPa||ASTM C848||360||200||200|
|Flexural Strength||MPa||ASTM F417||450||620||900|
|Compressive Strength||MPa||ASTM C773||2900||1750||2500|
|Fracture Toughness Range||MPa||NOTCHED BEAM||5-6||11||13|
|Thermal Conductivity||W/mK||ASTM C20||27||2.2||2.2|
|CTE 25-100||10(-6)/0C/||ASTM C372||8.2||10.1||10.3|
|Thermal Shock||delta Tc||NOTE3||300||350||350|
|Dielectric Strength||ac-kv/mm (6.25mm)||ASTM D116||9.0||9.4||9.4|
|Dielectric Loss||250C@1MHz||ASTM D2520||0.0005||0.001||0.001|
|Volume Resistivity||1000C ohm-cm||ASTM D1829||10^6||<10^2||<10^1|
- DATA MEASUREMENTS – All data measurements are typical and made at room temperature unless otherwise noted.
- THERMAL SHOCK RESISTANCE – Tests are run by quenching samples into water from various elevated temperatures. The change in temperature where a sharp decrease in flexural strength is observed is listed as ‘delta Tc’.
- CHEMICAL RESISTANCE – Although all alumina and zirconia ceramics are highly resistant to chemical attack, it is recommended that specific applications are discussed with Almath Crucibles to ensure optimum ceramic selection.