Alumina ceramic components

1.Superior electrical insulation with consistent reliability under high-temperature and high-frequency conditions
It boasts high volume resistivity (>10¹⁴ Ω·cm at 500°C) and a dielectric breakdown strength of ≥25 kV/mm, with insulating performance far exceeding conventional materials.
Its dielectric constant remains stable at 9–10 (1 MHz) alongside ultra-low dielectric loss at high frequencies, eliminating risks of electric leakage and arc breakdown.
Key Advantage: Alumina exhibits outstanding insulation stability at elevated temperatures. Under operating conditions above 800°C, its electrical isolation performance vastly outperforms zirconia, which gains conductivity as temperatures rise. It serves as the only dependable option for insulating cores and core insulating sleeves.
2.Precision micro-bore machining and concentricity control to accommodate fine wire gauges and precision assembly requirements
Micron-level precision control is achievable for both inner bores and wall thicknesses; the minimum stable machinable wall thickness reaches 0.15 mm, effectively saving assembly space.
Inner bore surfaces are smooth, burr-free and flash-free, enabling unobstructed wire threading without jamming, and fully protecting the insulating layers of signal wires from frictional scratches.
Customer Value: For sensors and precision electronic assemblies with extremely confined space, the integrated micro-bore thin-wall design cuts installation space consumption by over 50%, enabling lighter and more compact overall equipment structures.
3.Excellent thermal stability with a maximum operating temperature of 1600°C – 1750°C
Fabricated from 95% to 99%+ high-purity alumina, the material maintains stable physical and chemical properties under long-term continuous operation at 1600°C to 1750°C.
It features a low thermal expansion coefficient of only 6.5×10⁻⁶/°C, offering good compatibility with a wide range of industrial metals and exceptional thermal shock resistance against rapid temperature swings.
Customer Value: When continuously exposed to persistent high heat in industrial furnaces and high-temperature melting kilns, the components will not soften, creep or deform, fully preserving the operational precision of precision equipment and the temperature measurement accuracy of sensors.
4.Robust mechanical compression resistance with exceptional wear and erosion resistance
Flexural strength ranges from 250 to 580 MPa, compressive strength hits 2100 to 3600 MPa, and Vickers hardness exceeds HV1500.
Surfaces resist scratching under high-speed, high-frequency physical friction or particle material erosion, with mating dimensions remaining deformation-free.
Customer Value: It drastically reduces frequent production line shutdowns and part replacements caused by worn shafts and bushings, minimizing the overall equipment maintenance cost.
5.High chemical inertness with corrosion resistance and zero contamination
It delivers strong resistance to acid and alkali corrosion, fully withstands erosion from industrial corrosive gases and cleaning fluids, and is completely non-absorbent.
Customer Value: In sensitive semiconductor, chemical processing and medical testing environments, it releases zero metallic ion contaminants to avoid cross-contamination and guarantee stable high-purity production workflows.