 CHARCTERISTICS OF CERAMICS
| MATERIAL | ALUMINA(Al2O3) | ZIRCONIA(ZrO2) | | 99.5% | 99.9% | Y Type | Mg Type | | Color | White | Ivory | Ivory | Yellow | | Density | 3.8 | 3.9 | 6.0 | 5.7 | | Vickers Hardness Load(500g) | Kgf/mm2 | 1700 | 1750 | 1250 | 1100 | | GPa | 16.7 | 17.2 | 12.3 | 10.8 | | Flexural Strength | Kgf/mm2 | 33 | 50 | 100 | 70 | | Gpa | 323 | 490 | 980 | 686 | | Compressive Strength | Kgf/mm2 | 240 | - | 580 | - | | Mpa | 2353 | - | 5686 | - | | Young's Modulus of Elasticity | X106Kgf/Cm2 | 3.7 | 3.9 | 2.1 | 2.1 | | GPa | 362 | 382 | 206 | 206 | | Coefficient of Linear Thermal Expansion (x10-6/¡É) | 40 ~ 400¡É | 7.1 | 7.2 | 10.5 | 9.9 | | 40 ~ 800¡É | 7.9 | 8.0 | 11.0 | 10.3 | Thermal Conductivity(20¡É)
(cal*cm/cm2*sec*¡É) | 0.06 | 0.08 | 0.009 | 0.008 | | Fracture Toughness (MN/m3/2) | 3.4 | 3.4 | 6.0 | 11.5 | | Max. Use Temperature (¡É) | 1600 | 1750 | 200 | 800 | | Thermal Shock Resistance | ¡É | 250 | 250 | 300 | 450 | | ¢µ | 482 | 482 | 572 | 842 |
By Fujikin Incorporated(Japan)
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