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Alumina ceramic series
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Alumina ceramics



NaterialUnit95% Alumina Ceramic97% Alumina Ceramic99% Alumina Ceramic99.7% Alumina Ceramic
Densityg/cm³3.653.723.853.85
Flexural StrengthMpa290300350350
Compressive StrengthMpa3300340036003600
Modulus of ElasticityGpa340350380380
Impact ResistanceMPam1/23.94.05.05.0
Weibull ModulusM10101111
Vickers HardulusHV0.51800185019002000
Thermal Expansion Coefficient10-6K-15.0-8.35.0-8.35.4-8.35.4-8.3
Thermal ConductivityW/Mk23242728
Thermal Shock Resistance                                          △T℃250250250280
Maximum Use Temperature1600165017001700
Volume Resistivity at 20℃Ω≥10^14≥10^14≥10^14≥10^15
Dielectric StrengthKV/mm20202530
Dielectric Constant                                    εr10101010