Industrial wear resistance mirro surface 99% al2o3 alumina ceramic seal rings

Wear resistance alumina seal rings -A variety of specifications available -High density -High hardnes -Precision finishing

1. High density  

2. High hardness  

3. Low thermal conductivity  

4. Chemical inertness

5 .Resistance to molten metals

6. Good Wear resistance

7. High fracture toughness

 8. Good insulation performance and high temperature resistance

96% 99% alumina ceramic  is used in shaft , pump plunger, sealing structure, auto mobile Industrial, oil drilling equipment, Insulation parts in electrical equipment parts, with high density, bending strength and breaking tenacity.  

Performance For Alumina Ceramic
Item		Unit	96 Al2O3	99 Al2O3
Physical Characteristics	Bulk density	g/cm3	3.6	3.9
	Water absorption	%	0	0
Mechanical Characteristics	Flexural strength	Mpa	340	360
	Hardness Vickers	Gpa	13.5	15.6
	Elastic modulus	Gpa	320	370
	Poisson’s ratio	-	0.23	0.23
Thermal Characteristics	Linear expansion coefficient	(200C-5000C) 10-6/0C	7.2	8
	Thermal conductivity	w/(m.k)	24	32
	Specific Heat	*10-3J/(kg*K)	0.78	0.9
Electrical Characteristics	Dielectric constant (1MHZ)	-	9.4	9.9
	Dielectric loss angle	*10-4	5	1
	Dielectric strength	*106V/m	15	15

Industrial wear resistance mirro surface 99% al2o3 alumina ceramic seal rings