Description

Alumina Ceramic Parts Custom 99% Al2o3 Ceramic Collar

Al2o3 Ceramic Collar is an electrically insulating material, with a high electrical resistivity, increasing with purity.
Good chemical stability of alumina leads to high corrosion resistance. It is insoluble in water and only slightly soluble in strong acid and alkaline solutions.

Advantages of Al2o3 Ceramic Collar:

1.Good self-lubricity

Hgih alumina ceramics have the properties of self-lubricity and inadhesion, the roughness is only 1/6 that of steel pipes thus less flow resistance.

2.Light weight

The density of high alumina ceramics is about 3.6 g/cm3, which is only half that of steel, thus easy for construction and installation.

Alumina ceramic is the material of choice for alumina wear parts. The proven wear and heat resistance of Al2o3 Collar makes them ideal for the manufacture of wear-resistant components.

Alumina (Al₂O₃) ceramic is a hard, chemically resistant material and has the ability to withstand very high temperatures in aggressive environments.

Technical Data

Properties	Unints	Alumina						Zirconia	Sic	Si3N4
Properties	Unints	95%al2o3	97%al2o3	99%al2o3	99.5%al2o3	99.7%al2o3	99.99%al2o3	Zirconia	Sic	Si3N4
Density	g/cm3	3.6	3.75	3.8	3.9	3.94	3.95	6	2.7	2.8
Color	-	White	White	Ivory	Ivory	Ivory	White	White/Black/Blue	Black	Gray
Hardness	Mohs Scale	8.8	8.9	9	9	9	9	8.8	9.5	9
Straightness	‰	1	1	1	1	1	1	1	1	1
Bending Strength(20°c)	Mpa	304	320	340	370	375	375	1200	90	180
Compressive Strength(20°c)	Mpa	1910	2100	2210	2300	2300	2300	2500	600	650
Water Absorption	%	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2	0	0	0
Max Working Temperature	°c	1500	1650	1700	1750	1750	1750	600	1600	1650
Dielectric Constant 1MHZ(E)	25°c@1MHz	9.2	9.3	9.5	9.7	9.7	9.8	29	10	9.5
Thermal Conductivity	W/m.k	25	27.5	29	30	30	30	2.5	15	23
Fracture Toughness	Mpa*m1/2	3.8	4	4.2	4.3	4.3	4.4	10	10	10