Shengda Ceramic provides all kinds of alumina ceramics and engineering ceramics.
Product Introduction
Engineering Ceramic Alumina Ceramic Insulator Alumina Products
Alumina ceramic (Al₂O₃) is a premium engineering ceramic material renowned for its exceptional electrical insulation, thermal stability, and mechanical strength. As a leading manufacturer of alumina ceramic insulators and industrial alumina products, we specialize in delivering customized solutions for high-temperature, high-voltage, and corrosive environments.
Why Choose Our Alumina Ceramic Components?
1.Superior Electrical Insulation
1)Dielectric strength up to 15 kV/mm, ideal for high-voltage insulators and power transmission systems.
2)Volume resistivity >10¹⁴ Ω·cm ensures zero current leakage in critical applications.
2.Extreme Temperature Resistance
1)Operates reliably from -200°C to 1600°C, perfect for high-temperature ceramic components in furnaces, aerospace, and semiconductor equipment.
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3.Customized Engineering Solutions
1)Tailored dimensions (tolerance ±0.1mm) and shapes for precision alumina ceramic parts.
2)Multi-layer metallization options (Mo-Mn, W, Au) for hermetic sealing.
4.Corrosion & Wear Resistance
1)9 Mohs hardness rating outperforms steel, with <0.02g/cm² annual wear rate in abrasive environments.
Key Applications of Alumina Ceramics
1)Electronics & Energy:
✅ Vacuum interrupter tubes | ✅ Thyristor insulation housings | ✅ LED substrate carriers
2)Industrial Machinery:
✅ Wear-resistant liners | ✅ Thermocouple protection tubes | ✅ Pump seals
3)Medical & Aerospace:
✅ Biocompatible implant coatings | ✅ Satellite communication insulators
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Main Features:
1. High hardness
2. High heat resistance
3. Good wear resistance
4. High electrical resistivity
5. High corrosion resistance
Technical Parameters
| Properties | Units | Cordierite Ceramic | Mullite Ceramic | 95%Alumina Ceramic | 99%Alumina Ceramic | 99.5%Alumina Ceramic | 99.7%Alumina Ceramic | Silicon Nitride | Zirconia Ceramic |
| Colour | Yellow | White | White | Light yellow | Light yellow | Light yellow | Black | White | |
| Density | g/cm3 | 1.9 | 2.6 | 3.6 | 3.8 | 3.8 | 3.9 | 3.2 | 6 |
| Flexural Strength | Mpa | 30 | 120 | 300 | 350 | 375 | 375 | 800 | 1100 |
| Compressive Strength | MPa | 350 | 500 | 2500 | 2800 | 2800 | 2554 | 2600 | 3000 |
| Modulus of Elasicity(20℃) | Gpa | 40 | 100 | 300 | 350 | 350 | 357 | 290 | 320 |
| Max Use Temperature | °C | 1200 | 1300 | 1400 | 1500 | 1500 | 1760 | 1300 | 1050 |
| Thermal Condutivity | W(m.K) | 1.3-1.8 | 2~6 | 20 | 30 | 30 | 33-38 | 25 | 3 |
| Thermal Expansion Cofficient | 10-6/°C | 2.5-3 | 2.5-3 | 7.5 | 8 | 8.2 | 8.2 | 3 | 10 |
| Thermal Shock Resistance | △T℃ | 300 | 150 | 140 | 150 | 200 | 223 | 600 | 250 |
| Dielectric Strength | KV/mm | - | - | 15 | 18 | 18 | 23.4 | 14 | 15 |
| Dielectric Constant | Er | 8 | 8 | 9 | 9.2 | 9.2 | 9.84 | 9 | 26 |
Production process
1. Grind and crush the raw materials to be slurry or powder
2. se-different method to making the slurry or powder into semi-finished products
3. Put the semi-finished products into the kiln for dewaxing and sintering;
4. After forming and sintering, Ceramic Sleeves products can also be processed by subsequent CNC precision machining according to the drawing requirements. Then Q/C test.
5. Finally package Ceramic Sleeves by bubble paper or cartons and place it on tray for delivery

Certifications

Our customers

Packaging and shipping

Transport

FAQ:
Q: Do you have the products in stock?
A: Some standard produce have in stock, such as ceramic band heater insulator; bobbin heater insulator and ceramic connector. But it needs to check according to your requirement.
Q: How do you pack the goods?
A: Our standard packaging is carton, we can customize it as per your requirement as well.
Q: How many days do you finish the sample?
A: Usually 15 business days (Including 8days for making furnaces and 7days for producing samples)

Request A Quote Today
Whether is a product enquiry or technical help, please send messager here, our team will respond within 8 hours.
Subject : Engineering Ceramic Alumina Ceramic Insulator Alumina Products
If you have any questions or need help, feel free to contact with our team.
Phone
+86 15335210683
Location
Qianluo Village, Dingshu Town, Yixing City, Jiangsu Province, China
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