Alumina ceramics(Al₂O₃) are widely used ceramics, which are divided into high-purity and ordinary types.The Al₂O₃ content of high-purity alumina ceramics is 99% or higher.

Advantages of Alumina ceramics:

a: Smooth surface with good flatness.

b: Structural stability and resistance to deformation.

c: Excellent corrosion resistance and chemical resistance.

d: Even in high-temperature environments, the physical and chemical properties remain stable.

Naterial	Unit	A95% Alumina Ceramics	A97% Alumina Ceramics	A99% Alumina Ceramics	A99.7% Alumina Ceramics
Density	g/cm³	3.6	3.72	3.85	3.85
Flexural Strength	Mpa	290	300	350	350
Compressive Strength	Mpa	3300	3400	3600	3600
Modulus of Elasticity	Gpa	340	350	380	380
Impact Resistance	MPam1/2	3.9	4	5	5
Weibull Modulus	M	10	10	11	11
Vickers Hardulus	HV0.5	1800	1850	1900	1900
Thermal Expansion Coefficient	10-6K-1	5.0-8.3	5.0-8.3	5.4-8.3	5.4-8.3
Thermal Conductivity	W/Mk	23	24	27	27
Thermal Shock Resistance	△T℃	250	250	270	270
*Maximum Use Temperature	℃	1600	1600	1650	1650
Volume Resistivity at 20℃	Ω	≥1014	≥1014	≥1014	≥1014
Dielectric Strength	KV/mm	20	20	25	25
Dielectric constant	εr	10	10	10	10

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