Ceramic Ball
Zirconium Oxide Ball
Zirconium Oxide (ZrO2) Ceramic Ball
Profile
Zirconium oxide (zirconia) ceramic balls combine near-steel density with the highest fracture toughness of any technical ceramic. They resist the brittleness that limits other ceramics, while offering excellent wear resistance, chemical inertness and electrical insulation. Jiaxin supplies zirconia balls from 0.3 mm to 250 mm in grades G3 to G60.
Hardness:HV 1200–1350 (HRA 80–85), with the highest toughness of any ceramic.
Grade: Y-TZP / Mg-PSZ, ISO 3290 Class I–II.
Sizes:0.3 mm – 250 mm, with custom diameters available on request.
Applications: Hybrid bearings, valve balls and seats, grinding media, pumps, medical devices and wear parts.
Why Jiaxin Zirconia Ceramic Balls
Four advantages over typical zirconia ceramic ball suppliers.
Widest Size Range
0.3 mm miniature to 250 mm large balls — far exceeding the typical 50.8 mm limit of most suppliers.
Bearing-Grade Precision
Grades G3 to G60, significantly tighter than industry-standard G20 or grade 1000, ideal for precision bearings
30 Years, Fortune 500
Three decades of manufacturing experience, trusted by Fortune 500 oil, gas and chemical companies worldwide.
ISO Certified Quality
Every batch ships with material certificate and inspection report. Passivation and custom packaging available.
Characteristics
Key material properties that make zirconia the toughest technical ceramic.
Highest Toughness
Fracture toughness of 8–10 MPa·m½ — the highest of any technical ceramic, resisting chipping and impact.
Steel-Like Density
At ~6.0 g/cm³, close to bearing steel, zirconia is a drop-in replacement in many steel bearing designs.
Wear & Corrosion Resistant
Excellent resistance to wear, acids, alkalis and molten metals, with a low friction coefficient against steel.
Non-Magnetic & Insulating
Zirconia is non-magnetic and electrically insulating, like all technical ceramics.
Chemistry
Reference composition of zirconia ceramic ball grades.
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Zirconium oxide (ZrO2 + HfO2): ≥ 94% — the matrix providing toughness
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Yttrium oxide (Y2O3): 4 – 6% (Y-TZP) — stabiliser retaining the toughening phase
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Magnesium oxide (MgO): 3 – 4% (Mg-PSZ) — alternative stabiliser
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Aluminium oxide (Al2O3): ≤ 0.5% — minor additive aiding sintering
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Silicon dioxide (SiO2): ≤ 0.3% — impurity controlled
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Iron oxide (Fe2O3): ≤ 0.1% — impurity kept low
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Titanium dioxide (TiO2): ≤ 0.2% — trace impurity
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Sodium oxide (Na2O): ≤ 0.1% — trace impurity
Microstructure of zirconia ceramic balls showing fine tetragonal grain structure.
Corrosion Resistance
Zirconia balls resist most acids, alkalis, solvents and molten metals, and perform well in steam and aqueous environments.
Not recommended for: hydrofluoric acid, hot concentrated sulphuric acid, or prolonged steam exposure above 300 °C (which can destabilise Y-TZP).
Technical Specifications
Standard zirconia ball specifications. Custom dimensions available on request.
Material Grade
Y-TZP / Mg-PSZ (ZrO2)
Precision Grades
G3, G5, G10, G16, G20, G28, G40, G60
Young's Modulus
~200 – 210 GPa
Surface Finish
Polished, lapped, or custom
Equivalent Names
Zirconia, zirconium oxide, ISO 3290 Class I / II
Hardness
HV 1200–1350 (HRA 80–85)
Flexural
Strength~900-1200 MPa
Supply Condition
Sintered, lapped and polished
Diameter Range
0.3 mm – 250 mm
Density
~6.0 g/cm³
Magnetism
Non-magnetic
Certification
ISO 9001, material certificate, inspection report
Material Selection Guide
Compare zirconia with other common ball materials to choose the right one.
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Zirconia — highest ceramic toughness, steel-like density, excellent wear resistance. Best for hybrid bearings, valves and grinding. → Zirconia product page
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420C — HRC 48-56, moderate corrosion resistance. Lower-cost martensitic option. → 420C product page
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304 — ~HRC 25, good corrosion resistance. General-purpose non-magnetic. → 304 product page
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316 / 316L — ~HRC 25, excellent corrosion resistance. Best for marine and chemical. → 316 product page
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52100 Chrome Steel — HRC 60-67, low corrosion resistance. Highest wear resistance at lower cost. → Chrome steel page
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Silicon Nitride (Ceramic) — Extremely hard, corrosion-proof, lightweight. For extreme environments. → Ceramic ball page
International Grade Equivalents
Zirconia ceramic is known by different designations worldwide.
Common designation: Y-TZP / Mg-PSZ (ZrO2)
ISO 3290: Class I / II
Other names: zirconium oxide ceramic, zirconia
ZrO2
Y-TZP
Mg-PSZ
ZrO2-HfO2
Class I
Class II
ISO 3290
Zirconia
Industries Using Zirconia Ceramic Balls
Zirconia balls are chosen where ceramic performance is needed without the brittleness of alumina.
Bearings & Valves
Hybrid ceramic bearings, ball valves, check valves, pump components, metering pumps and chemical dosing equipment.
Grinding & Milling
High-performance grinding media, ball mills for electronics materials, pigments, minerals and pharmaceuticals.
Medical & Industrial
Medical devices, dental components, wear parts, flow meters, seals and precision measuring equipment.
Lead Times & Ordering
Flexible supply for both standard and custom requirements.
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Standard sizes: Popular diameters in stock — typically 3-7 days for shipment.
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Custom orders: Lead time 15-30 days, based on diameter, grade and quantity.
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MOQ: Standard sizes have low MOQ. Custom sizes quoted per requirement.
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Packaging: Standard export packaging, or custom VCI bags, vacuum packing, bulk drums.
Technical Resources
Learn more about zirconia ceramic ball selection and applications.
Frequently asked questions
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