Ceramic plate 99%Alumina Ceramic Wear resistant ceramic plate Square plate

1.Processed by dry-pressing 2.No pollution 3.High quality with competitive price 4.Superior comprehensive properties

Ceramic product performance parameter list
Item	Test Condition	Unit Symbol	95% Al2O3	99% Al2O3	ZrO2	Si3N4
Bulk Density		g/cm3	≥3.6	≥3.7	≥5.8	≥3.2
Acid Resistance	1:9HCl	mg/cm2	≤7	≤0.7
Alkali Resistance	10% NaOH	mg/cm2	≤0.2	≤0.1
Tensile Strength	25°C	Mpa	≥160	≥190	≥320
Flexural Strength	25°C	Mpa	≥280	≥300	≥1000	≥700
Thermal Shock Resistance	The sample in 800±10°C heating furnace heat preservation 30 minutes, removed in a asbestos board, naturally cooled to room temperature, repeat 10 times, no crack and burst phenomenon.
Coefficient of Linear Expansion	20-500°C	1X 10-6/°C	6.5-7.5	6.5-7.5	9.5-10.5	3.1-3.3
	20-800°C	1X 10-6/°C	6.5-8.5	6.5-8.5	9.5-10.5	3.1-3.3
Young's Modulus of Elasticity		Gpa	≥280	≥280	≥210	≥300
Dielectric Loss	1MHz  20°C	1X 10-4	≤4	≤2.5
Dielectric Constan	1MHz  20°C		9-10	9-10.5
Volume Resistivity	100°C	Ωcm	≥1013	≥1013
	300°C	Ωcm	≥1010	≥1010	≥1010	≥1018
	500°C	Ωcm	≥108	≥109
Dc Breakdown Strength	D.C.	Kv/mm	≥18	≥15
Vickers Hardness		Mpa	1600	1650	1200	1600
Fracture Toughness		MPam½	3.8	4.2	10	7
Poisson's Ratio			0.22	0.25	0.3	0.25

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