Toggle Navigation

COMPARISON TABLE FOR TECHNICAL CERAMICS


Material   Alumina Al2O3 Zirconia ZrO2 Mixed Oxides ZrO2/Al2O3 Silicates Silicon SIC Silicon Si3N4 Metal
Internal type   A-960 A-997 A-999 Z-507 Z-513 Z-700 E ATZ 20/80 ZTA 88/12 MG-125 C221 SC-200 N-105 N-205  
Standard designation   C795 C799 C799 PSZ PSZ TZP ATZ ZTA C410 C221 SSiC HP SN SSN C-15*
Description   Al2O3 Al2O3 Al2O3 Mg-PSZ Mg-PSZ Y-TZP ZrO2 Al2O3 Cordierite Steatite     SSN Steel
    purity purity purity 3,5% MgO 3,25% MgO Y2O3 particle reinforced particle reinforced     sintered hot pressed   unalloyed
    96% 99,70% 99,99% partially stabilized partially stabilized partially stabilized         without free silicon      
Hot pressed on request             yes yes yes - -   yes yes  
Colour   white white white yellow grey-white white white white grey grey black black grey -
Microstructure Properties   A-960 A-997 A-999 Z-507 Z-513 Z-700 E ATZ 20/80 ZTA 88/12 MG-125 C221 SC-200 N-105 N-205 Steel
Density g/cm3 3,7 3,9 >3,9 5,7 5,75 >6,0 >5,4 >4,1 2,1 2,6 3,1 3,2 3,22 7,87
Open porosity % 0 0 0 0 0 0 0 0 0,5 0 0 0 0 0
Average Grain Size µm 10 5 3 50 50 0,4 0,7 0,5 - - 1 5 5 -
Mechanical Properties   A-960 A-997 A-999 Z-507 Z-513 Z-700 E ATZ 20/80 ZTA 88/12 MG-125 C221 SC-200 N-105 N-205 Steel
Vickers Hardness (HV10) MPa 1400 1800 1800 1200 1250 1300 1400 1700 - - 2500 1600 1450 700
Compressive Strength MPa 2800 2800 2800 1600 1700 2200 2100 2600 300 900 2200 2500 2500 1000
Bending Strength MPa 290 340 340 500 550 1100 1000 600 60 120 420 850 750 450
Fracture Toughness MPam½ - 4,3 4,3 7 7 10,5 >6,5 4,5 - - 3,2 6 7 -
Module of Elasticity* GPa 350 380 380 200 205 210 220 360 - 80 410 320 300 210
Weibull-Modulus* - 10 10 10 12 14 20 20 10 - - 10 18 15 -
Poisson-Ratio* - 0,22 0,22 0,22 0,3 0,3 0,3 0,27 0,24 - - 0,17 0,26 0,25 0,33
Thermal Properties   A-960 A-997 A-999 Z-507 Z-513 Z-700 E ATZ 20/80 ZTA 88/12 MG-125 C221 SC-200 N-105 N-205 Steel
max. Application Temperature* Inert Gas Atmosphere °C 1600 1650 1650 900 900 950 1200 1000 - - 1800 1300 1300 400
max. Application Temperature* °C 1600 1650 1650 900 900 950 1200 1000 1200 1200 1500 1100 1100 300
Specific Heat at 20°C J/kgK 900 900 900 550 550 500 600 700 800-1200 800-900 650 750 700 462
Thermal Conductivity at 100°C W/mK 25 30 30 2 2 2 6 25 1,2-2,5 2-3 75 35 35 50
Coefficient of Thermal Expansion (between 20°C and 1000°C) 10-6 K-1 8,5 8,5 8,5 10,5 10,5 10,5 9 9 2-4 7-9 4,1 3,2 3,3 11
Thermal Shock Resistance* K 180 190 190 260 275 300 300 250 250 100 350 400 450 -
Electrical Properties   A-960 A-997 A-999 Z-507 Z-513 Z-700 E ATZ 20/80 ZTA 88/12 MG-125 C221 SC-200 N-105 N-205 Steel
Vol. Resisitivity at 20°C Ωcm 1014 1014 1014 1010 1010 109 109 109 1010 1011 10-100 1010 1012 0,0015
Vol. Resisitivity at 400°C Ωcm 1011 1012 1012 104 104 104 104 107 103 103 - - -
Vol. Resisitivity at 1000°C Ωcm 104 107 107 103 103 103 102 105 - - 0,2 107 107 -
Dielectric Strength kV/mm >18 >25 >25 - - - - - 10 15 - - - -
Dielectric Constant at 20°C and 1 GHz - 8 9 9 >20 >20 >20 >20 - - - - 20 20 -
Loss Factor (tgΔ) at 20°C and 10 kHz - 5x10-4 2x10-4 2x10-4 - - - - - - - - - - -
Loss Factor (tgΔ) at 20°C and 10 kHz - 3x10-4 1x10-4 1x10-4 - - - - - - - - 5x10-2 5x10-2 -

The data listed in the table refer to normalized and standardized test samples. Values may vary if tested on other geometries. *) Quoted data are partly based on bibliographical and partly measured data. They may only be used as a guidance