Product Overview
As specialized alumina ceramic insulator manufacturers, we produce 99% pure Al₂O₃ ceramic components that deliver unmatched electrical insulation, thermal stability, and mechanical durability. Our precision-engineered ceramic parts are the ideal solution for high-voltage, high-temperature, and corrosive environment applications across multiple industries.
Key Features & Benefits
✔ Exceptional Dielectric Strength (10-15 kV/mm) for superior electrical insulation
✔ High-Temperature Resistance up to 1600°C (2912°F) continuous operation
✔ Superior Mechanical Strength (300-400 MPa flexural strength)
✔ Excellent Chemical Resistance to acids, alkalis, and corrosive gases
✔ Low Thermal Expansion (7-8×10⁻⁶/°C) for thermal shock resistance
✔ Customizable Designs for specific application requirements
Critical Industrial Applications
1. Electrical & Power Transmission
High-voltage insulators for power distribution systems
Busbar supports in switchgear and substations
Insulating spacers for transformers and capacitors
2. Electronics & Semiconductor
Vacuum feedthrough insulators
RF/Microwave component insulators
Wafer processing components
3. Automotive & Aerospace
Spark plug insulators for combustion engines
EV battery insulation components
Aircraft electrical system insulators
4. Industrial Equipment
Heater element insulators for industrial furnaces
Thermocouple protection tubes
Process equipment insulation components
5. Medical & Scientific
Medical imaging equipment insulators
Laboratory instrument components
High-purity process components
Competitive Advantages
✅ 30+ Years Ceramic Expertise - Deep technical knowledge
✅ ISO-Certified Manufacturing - Consistent quality assurance
✅ Advanced Testing Facilities - Full material characterization
✅ Rapid Prototyping - Quick turnaround for development
✅ Global Supply Chain - Reliable delivery worldwide
Properties | Units | Steatite Ceramic | Cordierite Ceramic | Mullite Ceramic | 95% Al2O3 | 99% Al2O3 | Zirconia Ceramic | Silicon Nitride |
Colour | White | Yellow | White | White | Ivory | White | Grey | |
Density | g/cm3 | 2.7 | 1.9 | 2.6 | 3.5 | 3.85 | 6 | 3.2 |
Flexural Strength | Mpa | 140 | 30 | 120 | 280 | 340 | 1150 | 600 |
Compressive Strength | MPa | 900 | 350 | 500 | 2100 | 2200 | 2500 | 2500 |
Max Use Temperature | °C | 1000 | 1200 | 1300 | 1400 | 1650 | 1500 | 1800 |
Thermal Condutivity | W(m.K) | 2~3 | 1.3~1.8 | 2~6 | 16~28 | 19~30 | 2.5 | 20 |
Thermal Expansion Cofficient | 10-6/°C | 7 ~ 9 | 1.5~3.5 | 5~6 | 6.5~7.5 | 6~8 | 8~10 | 3~4 |
ThermalShock Resistance | △TC | 100 | 300 | 150 | 140 | 150 | 250 | 600 |
Specific Heat | J/kg.K | 850 | 800 | 900 | 950 | 950 | 500 | 500 |
Dielectric Strength | KV/mm | 20 | — | 30 | 12 | 10 | 5 | 20 |
Dielectric Constant | Er | 6 | — | 8 | 9 | 9 | 12 | 6 |
Product Advantages
● Certificates: ISO & SGS
● OEM & ODM: OEM & ODM service is available
● Strict testing procedures :Meeting the requirements of the product design and process, providing reliable testing data.
● Short Delivery time:If less than 1000 pieces, it only takes around 5 days. We also stock some standard-sized products, if you need urgently, we can delivery very soon.
● Best ex-factory price
● Worldwide customers
● Customized according to needs
● Continuous research and development of new products
● Customer service:If you find some quality problem, please contact us, we’ll deal with it as soon as possible.
Our customers have a wide range of processing choices for transportation mode.
Yixing Shengda Refractory Ceramic Co., Ltd, established in 1995, Yixing, China with an area of 4,000 square meters and fixed assets of over 1 million US dollars, is a professional manufacturer of Steatite Ceramic Parts, Alumina Ceramic Parts, Cordierite Ceramic Parts, Ceramic Band Heater Insulators, Ceramic Terminal Block, Thermostat Ceramic Parts, Zirconia Ceramics Parts, Ceramic Heater Plugs, etc.
Shengda Ceramic equipped with CAD/CAXA/Solidworks software to provide professional OEM & ODM service.
Looking forward to co-operating with the customers from all over the world!
