Alumina Ceramic Nut

Product Positioning
Alumina ceramic nuts are high-performance fasteners developed specifically for extremely harsh working conditions. Fabricated from high-purity alumina (Al₂O₃) ceramic via precision forming and specialized internal thread machining processes, they are designed to replace conventional metal or plastic nuts that easily fail under high temperature, strong acid & alkali corrosion, high-voltage electricity or strong magnetic fields. They deliver robust, reliable structural locking and physical isolation solutions for fastening key precision industrial components.

Core Features
1. Outstanding Heat Resistance & Ultra-Low Thermal Expansion Coefficient for Stable Fastening Without Loosening at High Temperatures
Material melting point exceeds 2050℃, with a continuous operating temperature up to 1600℃ in atmospheric environments.
Boasts an ultra-low thermal expansion coefficient (≈ 8×10⁻⁶/K), maintaining precise and stable thread fit dimensions even under drastic temperature fluctuations and thermal shock impacts.
Application Scenarios: Widely used for critical high-temperature fastening positions such as high-temperature reactors, vacuum sintering furnaces, and semiconductor heat treatment equipment.
Customer Value: Eliminates failures of traditional nuts caused by physical softening, creep or lost clamping force from thermal expansion at high temperatures, enabling long-term continuous high-temperature operation of equipment.
2. Superior Resistance to Strong Acids & Alkalis, Zero Contamination During Equipment Operation
Extremely high chemical inertness offers comprehensive protection against erosion from strong acids, strong alkalis and various corrosive chemical media; non-hygroscopic and rust-free.
Customer Value: Alumina ceramic nuts eliminate the risk of metal ion contamination, preventing material pollution in sensitive process environments (e.g., semiconductor etching, fine chemical manufacturing) caused by component corrosion, and greatly extending the service life of equipment exposed to corrosive media.
3. Excellent Electrical Insulation to Prevent Breakdown Under High Voltage
Dielectric strength exceeds 15 kV/mm with outstanding electrical insulation, cutting off current paths and resisting electric arcs and dielectric breakdown.
Customer Value: Provides fully safe electrically isolated fastening for semiconductor manufacturing equipment, power electronic systems and high-voltage medical components, protecting operators and high-precision control circuit boards from electrical hazards.
4. Completely Non-Magnetic to Shield Magnetic Field Interference
The ceramic material is inherently fully non-magnetic, producing no magnetization or eddy current heating effects even in intense magnetic field environments.
Application Scenarios: Working conditions with strict anti-magnetism requirements, including high-precision electronics, medical Magnetic Resonance Imaging (MRI) equipment, and vacuum semiconductor beam chambers.
Customer Value: Eliminates magnetic interference that distorts high-precision test readings, ensuring accurate signal capture with zero drift for sophisticated precision instruments.