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| Categories | Precision Ceramic Balls |
|---|---|
| Supply Ability: | 50000 Pieces Per Week |
| Manufacturing Process: | Isostatic pressing, sintering, grinding, and lapping |
| Surface Finish: | Mirror polished surface |
| Certification: | ISO9001 |
| Thermal Conductivity: | Low thermal expansion coefficient |
| Applications: | Bearings, valves, medical devices, aerospace, electronics |
| Material: | Silicon Nitride (Si3N4) / Zirconia (ZrO2) / Alumina (Al2O3) |
| Price: | $0.05~$50 Per Piece |
| Packaging Details: | PP Bags + Heavy Carton |
| Electrical Insulation: | High electrical resistivity |
| Load Capacity: | High load bearing capability |
| Payment Terms: | T/T |
| Color: | White, off-white, or light gray |
| Operating Temperature: | Up to 1000°C (varies by material) |
| Delivery Time: | 5-10 Work Days |
| Density: | 3.2 to 3.7 g/cm³ depending on material |
| Hardness: | Above 1400 HV |
| Place of Origin: | Handan |
| Corrosion Resistance: | Excellent resistance to chemicals and corrosion |
| Brand Name: | Norce |
| Sphericity: | Less than 1 micron deviation |
| MOQ: | 500 Pieces |
| Diameter Tolerance: | ±0.5 to ±5 microns |
| Company Info. |
| Norceramic New Materials (Beijing) Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Superior Hardness Alumina Oxide Ceramic Balls for Dispersing
Polishing
Our alumina balls deliver minimal contamination to processed
materials. They serve as ideal grinding media for ball mills,
attritors and sand mills, perfect for ceramic raw materials,
paints, coatings, pigments, inks, electronics materials, powders
grinding and food‑grade processing. Multiple sizes from tiny
micro‑beads to large‑diameter spheres are available to match your
grinding and milling requirements.
Technical Specifications
| Material | Alumina Oxide (Al2O3) |
| Diameter Range | 1.0 mm – 200.0 mm; other sizes subject to production confirmation |
| Precision Standard | final grade to be confirmed according to application |
| Hardness | HV 2000 reference range |
| Density | Approx. 3.7 g/cm3 |
| Young’s Modulus | Approx. 300 GPa reference value |
| Strength Reference | Approx. 2800 MPa, depending on material grade and test method |
| Temperature Capability | Up to 1600°C under suitable non-impact and compatible service conditions; actual limit depends on application design |
| Magnetism | Non-magnetic |
| Electrical Property | Excellent electrical insulation |
| Corrosion Resistance | Excellent in most conditions; not recommended for sulfuric acid-containing solutions or high-concentration alkali without compatibility confirmation |
Key Characteristics & Benefits:

Common Applications:

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