99.5% high purity alumina ceramic, high temperature resistant to 1600°C, hard ceramic

Customized Alumina Ceramic Parts

Alumina ceramics (Al2O3) are an advanced ceramic material with high hardness, high temperature resistance and corrosion resistance, which is widely used in electronics, machinery, chemical industry, medical treatment and other fields. Its purity is usually 90%-99.9%. The higher the purity, the better the performance....

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99% Alumina Ceramic Properties
Item	Unit
Physical Properties
Color		Ivory/Beige
Density	g/cm3	3.85
Alumina Content	%	99%
Gas permeability		0
Water Absorption		0
Mechanical Properties
MONS' Hardness	Grade	9
Rockwell Hardness	HRA	92
Vickers Hardness (Hv50)	Gpa(Kg/mm²)	15.7（1600）
Flexural Strength(20°C)	Mpa	330
Compressive Strength(20°C)	Mpa	2000
Fracture Toughness(20°C)	MPam1/2	4
Modulus of Elasticity	Gpa	350-400
Thermal Properties
Thermal Conductivity(20°C-400°C)	W（m.K）	27.5
Thermal Expansion Coefficient	10-6/°C	7.6
Thermal Shock Resistance	△T°C	200
Maximum Use Temperature	°C	1650
Electronic Properties
Dielectric Strength	KV/mm	＞10
Dielectric Constant	Er	9.1
Dielectric Loss Angle(1MHz)		0.0002-0.0003
Volume Resistivity(20°C）	Ω.cm	＞1014

Core features

Ultra-high hardness (Mohs hardness 9, second only to diamond)

High temperature resistance (long-term use temperature up to 1600°C)

Excellent electrical insulation (preferred high-frequency insulation material)

Chemical corrosion resistance (acid and alkali resistance, oxidation resistance)

Low wear rate (suitable for high friction environment)

Application industries

Electronic industry: ceramic substrates, insulating rings, vacuum tube components

Mechanical seals: pump sleeves, valve seals

Medical field: artificial joints, dental implants

High temperature resistant components: furnace lining, thermocouple protection tube

Technical consultation: We provide 99.5%/99.9%/96/95 different purity alumina ceramic solutions, supporting CAD customization and mass

production.

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