Industrial Ceramics Al2O3 Alumina Spacer
- MSJ/AL-002
- Alumina ceramic
- customized
- 10 pcs per type
- industrial applications
Mascera provides customized alumina ceramic spacers with a wide range of purities, including 95%, 96%, 99%, 99.5%, and 99.8%. The higher purity levels offer enhanced working temperature, strength, wear resistance, and corrosion resistance, making them suitable for vacuum applications. Our ceramic spacers are fully dense and produced through high-temperature sintering. The surface finish can be as-fired, fine-grinding, or polished, and the geometry can be machined to tight tolerances to meet specific fitting requirements. We collaborate closely with our customers to understand their needs and produce precise ceramic parts, regardless of whether it's a small quantity for prototyping or a large batch production.
For any inquiries, please email info@mascera-tec.com or call +86 13860446139.
Product detail
Alumina ceramic, also known as al2o3 ceramic or aluminum oxide ceramic, is widely used in various technical ceramic applications. It possesses several advantages, such as high strength, good dielectric properties, excellent wear resistance, high temperature resistance, and corrosion resistance. It is one of the hardest and most wear-resistant materials on earth and requires diamond tools for machining after sintering. Alumina ceramic finds applications in diverse fields, including machinery, electrical, electronics, semiconductor, petroleum, chemical, textile, and other industries.
Mascera specializes in producing tailor-made alumina ceramic spacers with a wide range of purities, including 95%, 96%, 99%, 99.5%, and 99.8%. The higher purity levels have fewer impurities and can be used for vacuum applications. Our ceramic spacers are manufactured through high-temperature sintering, resulting in a fully dense product. The surface finish of alumina ceramic spacers can be as fired, fine grinding, or polished, and their geometry can be machined into tight tolerances to meet high fitting requirements. We work closely with our customers to understand their needs and produce exact ceramic parts. Whether it's a small quantity for prototype or large quantity for batch production, we are always ready to provide our service.
For any inquiries, please email info@mascera-tec.com or call +86 13860446139.
Main properties of alumina ceramic spacers
Good strength and stiffness
Extremely high hardness (Moh's hardness 9)
Exceptional resistance to wear
Good corrosion resistance to acid and alkali
High temperature resistance up to 1750℃
Excellent electrical insulation
Low dielectric constant and dielectric loss
Typical applications of alumina ceamic
Mechanical seal rings
Pump plungers or pistons
Electronic substrates
Ceramic crucibles
Textile eyelets or guides
Ceramic balls/valves/seats for valves
Electrical insulators
Wear resistant nozzles
Ceramic furnace tubes
Ceramic thermocouple protection tubes
Material Data Sheet
| Material | Unit | 95% Al2O3 | 96% Al2O3 | 99% Al2O3 | 99.5% Al2O3 | 99.8% Al2O3 |
|---|---|---|---|---|---|---|
Purity | % | 95 | 96 | 99 | 99.5 | 99.8 |
Color | --- | White/Pink | White | Ivory | Ivory | Ivory |
Density | g/cm3 | 3.65 | 3.72 | 3.85 | 3.90 | 3.92 |
Water Absorption | % | 0 | 0 | 0 | 0 | 0 |
Moh's Hardness | --- | 9 | 9 | 9 | 9 | 9 |
HV Hardness | --- | >1300 | >1300 | 1700 | 1750 | 1800 |
Flexural Strength @25℃ | Mpa | 300 | 300 | 330 | 375 | 390 |
Fracture Toughness | Mpa.M1/2 | 3~4 | 3~4 | 3~4 | 4 | 4 |
Compressive Strength (25℃) | Mpa | 2200 | 2200 | 2350 | 2450 | 2500 |
Thermal Conductivity @25℃ | W/M.K | 18-22 | ≥24 | 27 | 29 | 32 |
Thermal Expansion Coefficient | 10-6mm/℃ | 8 | 8 | 8 | 8 | 8 |
Thermal Shock Resistance | △T(℃) | 220 | 220 | 180-200 | 180-200 | 180-200 |
Max. Working Temperature | ℃ | 1500 | 1500 | 1700 | 1750 | 1750 |
Dielectric Strength | Kv/Mm | 16 | 17.2 | 20 | 22 | 22 |
Electrical Resistivity (@25℃) | Ω.Cm | 1014 | 1014 | 1014 | 1014 | 1014 |
Dielectric Constant (@1MHz, 25℃) | --- | 9 | 9 | 9.7 | 9.7 | 9.8 |
Dielectric Loss (Tan Delta) | --- | 0.0004 | 0.0002 | 0.0002 | 0.0001 | 0.0001 |
Available Shapes of Alumina Ceramics
Ceramic rod / ceramic pin / ceramic plunger
Ceramic tube / ceramic bushing / ceramic sleeve
Ceramic ring / ceramic washer / ceramic spacer
Ceramic disc
Ceramic plate / ceramic block
Ceramic ball
Ceramic piston
Ceramic nozzle
Ceramic crucible
Other custom ceramic parts
Machining Ability of Ceramic Parts
Dimensional accuracy: Up to 0.001mm
Surface roughness: Ra0.05-3.2μm
Concentricity: Up to 0.02mm
Parallelism: Up to 0.01mm
Accuracy of Inner hole Drilling: Up to 0.01mm
Cylindricity: Up to 0.02mm
Thread machining: Minimum internal thread M2
Surface finish: As fired, glazed, grinding, polishing, metallization
Packing & Shipment
| Package type | carton box with foam protection |
| Payment terms | TT / Western Union / Paypal 50% payment in advanced and 50% before shipment |
| Loading port | Xiamen, China |
| Shipping way | By sea / air / door-to-door express |
