| Customization: | Available |
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| Application: | Machinery Parts |
| Color: | Black, White, Beige |
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The specification of ceramic rings
| Material option | Alumina(Al2O3), Silicon nitride(Si3N4),Aluminum Nitride (AlN),Silicon carbide(SiO2) |
| Forming methods | Dry pressed, Ceramic injection molding, Hot pressed, HIP or CIP pressed |
| Specification | OD can be from 1 to 50mm, length can be from 10mm to 800mm |
| Precision processing | CNC machining, Precision grinding, Polishing, Lapping, |
| Tolerance | Both OD and ID can be 0.001mm, length can be 0.001mm |
| Key parameters | Roughness to be 0.02mm, Parallelism to be 0.001mm |
Surface quality |
Free of cracks, foreign contamination, mirror surface better than Ra0.02 |
The main features of zirconia ceramic parts
The description of alumina ceramic ring
Alumina ceramic parts are made of aluminum oxide ceramics which is a kind of strongest technical ceramic material with exceptional strength, high toughness, and superb reliability. These outstanding characteristics result in excellent resistance to wear and corrosion.
With our production capability through CNC and precision grinding machines, we are able to provide many different levels of precision zirconia ceramic parts to meet customers' high-precision assembly needs.
| Property | Units | 99.5% alumina |
99% alumina |
95% alumina |
ZrO2 (3Y-TZP) |
ZrO2 |
| Density | g/cm3 | ≥3.90 | ≥3.85 | ≥3.65 | ≥6.00 | ≥5.72 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1700 | 1700 | 1500 | 1300 | 900 |
| Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥1200 |
| Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | 1750 |
| Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 11 |
| Max. service temperature |
ºC | 1675 | 1600 | 1450 | 1000 | |
| CTE | 1×10 -6 /ºC | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 10.2 |
| Thermal shock | T(ºC) | ≥250 | ≥200 | ≥220 | ≥300 | 350 |
| Thermal conductivity(25ºC) | W/m.k | 30 | 29 | 24 | 3 | 3 |
| Volume resistivity | ohm.cm | |||||
| 25ºC | >1 x 10 14 | >1 x 10 14 | >1 x 10 14 | >1 x 10 11 | >1 x 10 11 | |
| 300ºC | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | 1 x 10 10 | |
| 500ºC | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | 1 x 10 6 | |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | 20 |
| Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | 28 |
We have in-housing comprehensive manufacturing types of equipment, including forming, sintering, CNC machining, precision grinding, laser cutting, and so on, which helps us to control the quality very well. Also, it greatly benefits cost control.
Q1. Are you a factory or trading company?
A: We are a manufacturer with over 15 years of experience. You are welcome to visit our factory.
Q2: Do you send a sample to check?
A: Sure, the sample is free and freight is collected.
Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours
Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we can proceed with your inquiry as a priority.
Q5: Is it available to provide customized products?
A: We always support custom-made demands as per different materials, dimensions, and designs.
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