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Superior Hardness Precision Ceramic Balls

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Norceramic New Materials (Beijing) Co., Ltd

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Superior Hardness 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

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Superior Hardness Alumina Oxide Ceramic Balls for Dispersing Polishing

Alumina balls (Al₂O₃) are high‑performance sintered ceramic spheres available in multiple purity grades: 95%, 99% and 99.7%. Featuring high hardness, excellent wear resistance, superior chemical inertness and high‑temperature stability, these ceramic balls minimize metal contamination during processing. Widely used as grinding media for ball mills, catalyst support media, tower packing, precision bearing components and insulation parts. Custom sizes and precision grades G10‑G100 are available. Bulk supply & OEM service supported.

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.

Superior Hardness Precision Ceramic Balls

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:

Ultra-high Hardness & Wear Resistance: With Mohs hardness close to 9 grades, alumina balls resist abrasion and deformation during long-term cyclic operation, effectively reducing equipment wear and maintenance frequency.
Excellent Electrical Insulation: As an ideal insulating ceramic material, it completely avoids current leakage and electric pitting damage, perfectly adapting to electronic and high-precision electrical equipment working conditions.
Superior Chemical Inertness: Resistant to erosion from most weak acids, weak alkalis, organic solvents and aqueous solutions, no oxidation or deterioration occurs in conventional corrosive environments.
High Temperature & Thermal Stability: Stable physical and chemical properties under continuous high-temperature working conditions, with outstanding thermal shock resistance to frequent temperature changes.
High Precision & Low Friction: Strict sphericity and dimensional tolerance control, smooth polished surface reduces friction coefficient, ensuring stable high-speed operation.
Zero Pollution & High Purity: No metal impurity precipitation, suitable for high-cleanliness production environments such as fine chemicals and electronic materials processing.

Superior Hardness Precision Ceramic Balls
Common Applications:

Alumina ceramic balls cover diversified industrial fields with comprehensive performance and cost advantages, serving both precision functional components and industrial auxiliary materials:

Precision Mechanical & Electrical Equipment: Used for insulating rolling bodies, precision instrument bearings, miniature valve core balls and positioning parts, providing stable insulation and low-friction operation.
Chemical & Petrochemical Industry: Served as catalyst support media, tower packing balls and reactor protective materials, resisting medium corrosion and improving reaction stability.
Grinding & Fine Processing: Ideal high-efficiency grinding media for ceramic glaze, pigment, ink, pharmaceutical powder and electronic material grinding, effectively improving grinding efficiency and product fineness without introducing impurity pollution.
Environmental Protection & Water Treatment: Applied in filter bed support layers, gas adsorption and desulfurization systems, supporting efficient filtration and exhaust gas purification.
New Energy & General Industrial Equipment: Wear-resistant and insulating components for automated equipment, high-temperature equipment and low-load high-stability operating systems.

Superior Hardness Precision Ceramic Balls

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