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Puwei's Alumina Ceramic Screw Fasteners are engineered to outperform traditional metal fasteners in the most demanding applications. Manufactured from high-purity aluminum oxide (Al₂O₃), they combine exceptional temperature resistance, outstanding chemical inertness, excellent electrical insulation, and high mechanical strength in a lightweight, non-magnetic package. These high-performance CERAMIC COMPONENTS are the ideal solution for industries where extreme environments, corrosion, electrical isolation, or weight reduction are critical, including the assembly of sensitive Microelectronics and high-power systems.
Material: High-Purity Al₂O₃ (96%, 99.5%, 99.8%). Density: 3.7 – 3.9 g/cm³. Water Absorption: 0%.
Hardness (HRA): 80 – 90 HRA. Flexural Strength: 300 – 400 MPa. Compressive Strength: >2000 MPa.
Max Continuous Use Temperature: 1500°C – 1650°C. Thermal Conductivity: 20 – 30 W/(m·K). Volume Resistivity: >10¹⁴ Ω·cm. Dielectric Strength: >15 kV/mm.
Unmatched resistance to extreme heat, corrosive chemicals, and thermal cycling, ensuring reliable performance where metals degrade.
Ultra-high electrical resistivity and dielectric strength make them essential for fastening components in Power Devices and High-Frequency Modules, preventing leakage and interference.
Produced with tight tolerances and high surface quality using advanced diamond grinding, ensuring consistent fit and function, even when used with other CERAMIC COMPONENTS like Alumina Ceramic Substrate (Al2O3).
Exceptional hardness and wear resistance lead to a dramatically longer service life than metal fasteners, reducing downtime and total cost of ownership.
Securing components in wafer processing and vacuum chambers where high purity, non-contamination, and non-outgassing are critical.
Assembling furnace elements and insulation in environments where metal fasteners would oxidize or lose strength.
Providing secure, electrically insulating fastening for busbars, heatsinks, and components in Power Devices and Thermoelectric Modules, eliminating short-circuit risks.
Used in corrosive fluid handling and in aerospace applications where lightweight, non-magnetic, and high-temperature performance are required.
We provide tailored fastener solutions to meet your specific requirements:
Manufactured under a controlled ISO 9001:2015 process: 1) Powder Preparation of high-purity alumina. 2) Precision Forming via isostatic pressing. 3) High-Temperature Sintering above 1600°C. 4) Precision Diamond Grinding on CNC equipment for threads and dimensions. 5) Rigorous Inspection including 100% visual and dimensional checks.
Our manufacturing is governed by an ISO 9001:2015 certified quality management system. Materials are compliant with RoHS and REACH directives, ensuring global acceptance and safety.
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Main Product:
Alumina Ceramic Substrates,
Aluminum Nitride Substrates,
Metallized Ceramics,
AlN Ceramics Disc ,
DPC Substrate,
DBC Ceramic Substrate
