alumina ball v
2 year ago
Wholesale Alumina Ceramic Ball – High Hardness & Wear Resistance for Precision Engineering & Electronics
Puwei's Alumina Ceramic Balls are engineered from high-purity 99.7% Al₂O₃, delivering exceptional hardness, wear resistance, and chemical stability. These precision-ground spheres outperform steel and other materials in demanding industrial applications, providing extended service life and reduced maintenance costs. As key CERAMIC COMPONENTS, they ensure reliable performance in high-temperature environments, corrosive conditions, and precision bearing systems where traditional materials fail. Ideal for use alongside our Alumina Ceramic Substrate (Al2O3) and advanced ceramic solutions for Microelectronics Packaging, Power Devices, and RF circuits.
Technical Specifications (99.7% Al₂O₃)
- Material: 99.7% Alpha Alumina (Al₂O₃)
- Density: ≥3.89 g/cm³
- Hardness (HV): ≥1800 (Mohs 9)
- Compressive Strength: ≥2500 MPa
- Flexural Strength: ≥380 MPa
- Thermal Expansion (20-500°C): 7.8×10⁻⁶/°C
- Max Operating Temp: 1750°C
- Size Range: 0.5mm – 60mm (custom diameters available)
- Sphericity: ≤0.0005mm for precision grades
- Surface Roughness (Ra): ≤0.025μm (ultra-smooth)
- Volume Resistivity: >10¹⁴ Ω·cm — ideal for Insulation elements
- Dielectric Strength: excellent insulator for High Frequency Modules
Product Features & Performance Advantages
⚡ Exceptional Hardness
Mohs 9 hardness provides superior wear resistance — 5–10x longer lifespan than steel in abrasive environments.
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Main Product:
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