Alumina
(Al2O3)		 Zirconia(ZrO2)
(partially stabilized zirconia)
Content % ≧ 99.6% -
Apparent Density g/cm3 3.9 6.05
Water Absorption % 0 0
Vickers Hardness Hv(500g) 1600 1300
Flexural Strength MPa 400 1200
Young's Modulus of Elasticity GPa 350 200
Coefficient of Linear Thermal Expansion x10-6/℃
(40∼450℃)		 6.8 11
Thermal Conductivity W/kgK 33 3.5
Heat Shock Resistant △T℃ 250 350
Alumina Zirconia
Corrosion Resistance ◎ ○
Heat Resistance ◎ △
Wear Resistance ◎ ○
Adiathermancy ○ ◎
Toughness ○ ◎
Ionic conductivity × ○
(partially stabilized zirconia)
Chemistry
◎very good : ○good : △not good : ×bad
Characteristic of the fine ceramics
(Alumina•Zirconia)
※The values are typical materials properties and may vary according to products configuration and manufacturing process.