Alumina for Ceramic Injection Molding

Alumina is a commonly used precision ceramic material that combines high hardness, wear resistance, electrical insulation, and corrosion resistance. It is widely used in electronics, industrial, medical, and automation equipment. We offer alumina material solutions in various grades, including 92%–97%, 99.5%, and 99.9%, with part dimensional accuracy up to ±0.001 mm, surface roughness up to Ra0.1, and a maximum operating temperature up to 1600°C. It is suitable for custom-made ceramic parts with high precision and complex structures.

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Alumina Material Property Analysis Table

Material		Al₂O₃92%	Al₂O₃96%	Al₂0₃ 99.5%+
Color	—	White	White	Light Yellow
Density	g/cm³	3.6	3.7	3.8
Water Absorption	%	0	0	0
Vickers Hardness	GPa	15.2	15.2	15.7
Vickers Hardness	HV	—	—	—
Bending Strength	MPa	340	350	360
Compressive Strength	MPa	2300	2300	2350
Elastic Modulus	GPa	—	—	—
Fracture Toughness	MPa·m1/2	3～4	3～4	4
Volume Resistance	Ω·cm	>10¹⁴	>10¹⁴	>10¹⁴
Permittivity	1MHz	8.5	9	9.3
Dielectric Dissipation Factor	1MHz	6×10⁻⁴	4×10⁻⁴	2×10⁻⁴
Insulation Endurance	kV/mm	14	15	15
Coefficient of Thermal Expansion	10⁻⁶/℃	6.8	7.2	7.2
Thermal Conductivity	W/m·K	16	24	32
Maximum Use Temperature	℃	1200	1500	1500
Heat-resistant Impact Temperature	℃	200	200	200
Main Features	—	Heat Resistance Abrasion Resistance	Heat Resistance Abrasion Resistance	Good Thermal Radioactivity Insulation Resistance
Main Uses	—	Insulating Electromagnetic	Substrate Electronic Components Rotating Shaft	Heat Sinks Electronic And Mechanical Components Semiconductor Devices

Material Characteristics Comparision Table

Thermal Expansion

Thermal Conductivity

Heat Shock Resistance

Compresslve Strength

Young's Modulus of Elasticty

Max.use TemperatureIn Atmosphere

Hardness

Chemical Durability

Flesural Strength UnderDifferent Temperature