Alumina ceramic parts

Silicon carbide includes black silicon carbide and green silicon carbide. Among them, black silicon carbide is mainly made of quartz sand, petroleum coke, and high-quality silica as raw materials, and is smelted at high temperature in a resistance furnace. Its hardness is between that of corundum and diamond, and its mechanical strength is higher than that of corundum. It is brittle and sharp.

Keywords: Silicon Carbide Ceramics

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Alumina Ceramic

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95 Alumina Ceramic Performance Parameter Table

Performance	Unit	Alumina AL,0,
Performance	Unit	AL.0,≥95
Bulk Density	g/cm²	3.7
Hardness	HRA≥	86
Flexural Strength	Mpa≥	300
Maximum Operating Temperature	℃	1500
Linear Expansion Coefficient	x10^-6 /℃	7.15-7.67
Dielectric Constant	ε,(20℃,1MHz)	9.21
Dielectric Loss	tanδx10 ^-4 ,1MHz	2.5
Volume Resistivity	Ω·cm(100℃)	9. 2*10 ¹⁶
Compressive Strength	Mpa≥	2500
Flexural Strength	Mpa≥	200
Elastic Modulus	Gpa	300
Poisson's Ratio	--	0.2
Thermal Conductivity	W/m·K(20℃)	20
DC Breakdown Strength	KV/mm	43.7
Tensile Seal Strength	Mpa	104.4

99 Alumina Ceramic Performance Parameter Table

Performance	Unit	Alumina AL.0.
Performance	Unit	AL,0,≥99
Bulk Density	g/cm	3.85
Hardness	HRA≥	87
Flexural Strength	Mpa≥	350
Maximum Operating Temperature	℃	1800
Linear Expansion Coefficient	x10%c	8
Dielectric Constant	εr(20℃,1MHz)	9.42
Dielectric Loss	tanδ×10 ^-4 ,1MHz	3.2
Volume Resistivity	Ω·cm(100℃)	9.8*10 ¹⁶
Compressive Strength	Mpa≥	3300
Flexural Strength	Mpa≥	280
Elastic Modulus	Gpa	370
Poisson's Ratio	--	0.15
Thermal Conductivity	W/m·K(20℃)	20
DC Breakdown Strength	KV/mm	45.3
Tensile Seal Strength	Mpa	104.4