Alumina Ceramic Ring

Category Alumina Ceramics

Alumina ceramics is a ceramic material with Al2O3 as the main crystal phase. SENCERAMICS can produce ceramic products with an alumina content of 95% to 99.8%. The alumina has a compact structure, low activity, and high-temperature stability. The electrical properties are the best, with good mechanical properties, with a Mohs hardness of 9.

Additional information

Material	Alumina 99.5%, Alumina 99.8%
Outer Diamerter	Up to 800mm
Wall Thickness	Down to 1mm
Tolerances	Up to +/-0.001mm
Forming	Isostatic-pressing
Processing	CNC machining with fine grinding
Customization	Send us your drawing to get our best offers

Product Details:

Alumina ceramic ring is made of a ceramic material with Al2O3 as the main crystal phase. SENCER PRECISION CERAMICS can produce ceramic rings with an alumina content of 99% to 99.8%. The alumina has a compact structure, low activity, and high-temperature stability. The electrical properties are the best, with good mechanical properties, with a Mohs hardness of 9. High purity alumina ceramic ring has excellent vacuum sealing and heat dissipation which decide that this kind of ceramic component can be used for the Auto and Vessel industry.

Material Properties:

Composite	(wt %)	99.5%	99.8%
Color		White or Ivory	White or Ivory
Density	g/cm³	3.9	3.92
Hardness	HRA	85	85
Flexural Strength	Mpa(psi*10³ )	386	381
Gas Permeability		0	0
Water Absorption	%	0	0
Thermal Shock Resistance	°C	198	198
Thermal Expansion	×10^-6/℃	8.2	8.2
Dielectric Constant,20°C	1MHz	9.6	9.7
Dielectric loss, tanδ	1MHz	1×10¹⁴	1×10¹⁴
Volume Resistivity,20℃	Ω·cm	≥10¹⁴	≥10¹⁴
Dielectric Strength,DC	Ω·cm	20	20
Compressive Strength	KV/mm	2700	2600
Fracture Toughness	MPa( psi * 10³)	350	350
Poisson’s Ratio	MPa	0.22	0.22
Thermal conductivity	W/mK	27	27

Type:

Alumina Ceramic Rings

Material:

Alumina 99%-99.8%

Available Color:
White or Ivory

Feature:

High-Temperature Resistance, High Wear-resistance, High corrosion-resistance.

Size:

Size Customized, according to customer’s drawing, OEM. We can reach the best wall thickness of 0.5mm and the Max diameter of 800mm.

Application:

CNC fine machining and lapping ceramic parts, Industrial ceramic, Technical ceramic.

Advantage:

Tight Tolerances
Large diameter available, up to 800mm
Wide range of thickness options, 0.5mm wall thickness
19 more Years Advanced Ceramics Experience
Super Wear Resistant and corrosion-resistance
Fast Delivery Date.
Sample projects available
Free Molding charge
Ultrasonic cleaning and dust-free packaging

Package:
Carton+Palletize,Carton,bubble paper inside,Wooden Box.Pls let us know if you have any special requirements.

Producing Methods:

CNC Fine machining with Lapping, Dry-pressing, Isostatic-pressing

Tolerance:
Up to ±0.002mm, as customer’s drawing or OEM.

Surface:

Ultrasonic cleaning, according to customer’s requirements.

Packaging and Delivery

Packaging:

Standard: Paper wooden boxes.
Special: Pls let us know if you have any special requirements.

Lead time:

For sample orders: We usually can finish them in 20 days.
Mass Production: The best lead time for mass-production could be in 30 days.

Transportation options:

By Air Express (Door to door)

The time limit is very fast (usually will arrive in 5-7 days )and you do not need to pick up the goods by yourself.

Freight charge: higher.

By Air Transportation

The time limit is very fast (usually will arrive in 7-12 days) and you need to pick up the goods from the airport by yourself.

Freight charge: cheaper than air express.

By Sea

The time limit is slow and you need to pick up the goods from the destination port by yourself.

Freight charge: cheapest.

Alumina Ceramic Ring

Additional information