High Temperature White 99.7% Alumina Ceramic Tube

High purity aluminum oxide powder is a white micro powder with uniform particle size, easy to disperse, stable chemical properties, moderate high-temperature shrinkage performance, and good sintering performance; High conversion rate and low sodium content. This product is the basic raw material for producing heat-resistant, wear-resistant, and corroData Sheet

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Description

Aluminum oxide ceramic tube is a ceramic material mainly composed of aluminum oxide (Al₂O₃), which can be used in aerospace and military equipment,

Alumina Ceramic Properties		96 Alumina Ceramic	99 Alumina Ceramic
Item	Unit	Typical Values
Physical Properties
Color		White	Ivory
Density	g/cm³	3.7	3.85
Alumina Content	%	96%	99%
Gas permeability		0	0
Water Absorption		0	0
Mechanical Properties
MONS’ Hardness			82
Vickers Hardness (Hv50)	Gpa(Kg/mm²)	15.7(1600)	15.7(1600)
Flexural Strength(20°C)	Mpa	300	330
Compressive Strength(20°C)	Mpa	2000	2000
Modulus of Elasticity (20°C)	Gpa	275
Poisson's Ratio (20°C)		0.22-0.23
Fracture Toughness(20°C)	MPam1/2	3.5	4
Thermal Properties
Thermal Conductivity(20°C-400°C)	W(m.K)	25	27.5
Thermal Expansion Coefficient	10-6/°C	6.5-7.5	7.6
Thermal Shock Resistance	T°C	200	200
Maximum Use Temperature	°C	1600	1650
Electronic Properties
Dielectric Strength	KV/mm	>12	>10
Dielectric Constant	Er	9-10	9.1
Dielectric Loss Angle(1MHz)		0.0002	0.0002-0.0003
Volume Resistivity(20°C)	Ω.cm	>1014	>1014