Alumina Ceramic Nut

Alumina Ceramic Nut is a high-performance fastener made of high-purity alumina (Al₂O₃) ceramic material. Compared with traditional metal or plastic nuts, its core advantage lies in its stability in extreme environments: it can withstand high temperatures (continuous use temperature up to 1600°C), resist strong acid and alkali corrosion, has excellent electrical insulation (dielectric strength>15 kV/mm), and is completely non-magnetic. These characteristics make it an irreplaceable choice in scenarios such as semiconductor manufacturing, vacuum equipment, medical equipment, and high-temperature furnaces. Alumina Ceramic Nuts provide a unique solution for the precision industry by eliminating the risk of metal ion contamination, avoiding magnetic field interference, and significantly extending the service life of equipment in corrosive media.

Core Features
Extreme Heat Resistance
Low thermal expansion coefficient (≈8×10⁻⁶/K), dimensional stability under severe temperature fluctuations, suitable for high-temperature reactors, vacuum sintering furnaces and other equipment.
Melting point>2050°C, long-term working temperature can reach 1600°C (air environment).
Chemical inertness
Resistant to corrosion by all strong acids, alkalis and organic solvents except hydrofluoric acid, suitable for corrosive environments such as electroplating and chemical pipelines.
Smooth surface (Ra＜0.2μm), no particle adsorption, meeting clean room standards (Class 10).
Functional performance
High-frequency insulator: dielectric loss <1×10⁻⁴ (1MHz), used in radio frequency equipment and plasma generators.
Magnetic insulation properties: zero magnetic susceptibility, avoiding interference with precision instruments such as MRI and particle accelerators.
Wear life ＞10⁷ cycles (ASTM G99), better than metal nuts.

Typical application scenarios
Semiconductor industry: fasteners for wafer etching equipment and CVD reaction chambers to eliminate metal contamination.

Energy field: high-temperature connection components for fuel cell stacks and photovoltaic panel production lines.

Medical technology: anti-magnetic structural parts for gamma knives and proton therapy devices.

Special working conditions: pressure-resistant insulating components for superconducting magnets and deep-sea exploration equipment.