Product Description
99.8% Al2O3 metallized ceramics for high-voltage insulation
(126kV-1000kV). Ultra-white, low sodium content, optimized for SF6
circuit breakers & GIS. Custom formulations available.
99.8% High-Purity Alumina Ceramics for High-Voltage Electrical
Insulation
Engineered for critical high-voltage applications, our 99.8% Al2O3
alumina ceramics provide superior electrical insulation and
mechanical stability in demanding environments from 126kV to 1000kV
systems. These ultra-white, low-sodium ceramics are specifically
formulated for SF6 circuit breakers, GIS insulation, and epoxy
resin casting systems.
Key Electrical Insulation Properties
Ultra-High Purity: 99.8% Al2O3 content with controlled impurity levels (Na₂O ≤ 0.20%)
Superior Dielectric Performance: Low conductivity (40-100 μS/cm) ensures reliable insulation
Optimized Processing: Controlled viscosity (3000 cp) and pot life for seamless epoxy
resin integration
Precision Engineering: Tight particle size distribution (D50: 3-22μm) for consistent
performance
Technical Specifications - Electrical Grade Alumina
Critical High-Voltage Applications
SF6 Circuit Breakers: 126kV-550kV insulation components
Gas Insulated Switchgear (GIS): Primary insulation for 126kV-1000kV systems
High-Voltage Cable Accessories: Insulation and filling for cable joints
Transformer Components: Mutual inductor GIS insulation
Electrical Bushings & Insulators
Material Advantages for Electrical Systems
Enhanced Reliability
Consistent dielectric properties across temperature variations
Excellent compatibility with epoxy resin casting systems
Minimal ionic contamination for long-term stability
Manufacturing Efficiency
Predictable rheology for automated production processes
Multiple grades tailored to specific potting system requirements
Custom formulations available for specialized applications
Custom Electrical Solutions
We provide tailored alumina formulations to match your specific:
Epoxy resin system compatibility requirements
Voltage class specifications (126kV to 1000kV)
Processing parameters and production workflows
Request Electrical-Grade Alumina Samples
Our technical team can help select the optimal ALF series grade for
your high-voltage insulation application.
Contact us for technical datasheets and sample evaluation to verify
performance in your specific electrical system.
