Alumina Ceramic Valve Plate (also known as alumina ceramic valve disc) is a high-performance fluid control component manufactured from high-purity aluminum oxide (Al₂O₃) ceramic material. It serves as a critical sealing and flow-regulating part in various industrial valves, replacing traditional metal, plastic, or rubber valve plates.
Material & Specifications
• Raw Material: High-purity alumina ceramic (typically 95%–99.9% Al₂O₃)
• Density: 3.75–3.95 g/cm³
• Hardness: Rockwell hardness HRC 90 (second only to diamond)
• Flexural Strength: 300–630 MPa
• Compressive Strength: 2000–4000 MPa
• Surface Roughness: Ra ≤ 0.1–0.8 μm (mirror-polished)
• Temperature Resistance: Operating range -200°C to +1600°C; melting point ~2050°C
• Standard Sizes: Customizable outer diameter (up to 300 mm) and thickness
Order(MOQ) :
1000Payment :
T/TKey Performance Advantages
1. Exceptional Wear Resistance
Its ultra-high hardness ensures minimal wear under high-frequency reciprocation and fluid erosion, extending service life 6–8 times compared to metal plates.
2. Superior Corrosion Resistance
Chemically inert, resisting attack from most strong acids, alkalis, and organic solvents, with corrosion rates 1/100th of ordinary metals.
3. Excellent High-Temperature Stability
Maintains mechanical strength and dimensional stability at extreme temperatures without creep or deformation.
4. High Sealing Performance
Precision-ground flatness and mirror finish enable tight, leak-proof sealing without additional gaskets.
5. Lightweight & Low Friction
~1/3 the density of steel, reducing actuator load; low friction ensures smooth valve operation.
6. Non-Toxic & Food-Safe
Biologically inert, FDA-compliant, suitable for potable water, food, and pharmaceutical systems.
Technical Parameters
| Item | Unit | Zirconia ceramic | 99% alumina ceramic | 96% alumina ceramic | 95% alumina ceramic | Steatite ceramic | Mullite ceramic | Cordierite ceramic |
| Bulk density | g/cm3 | 6 | 3.8 | 3.7 | 3.6 | 2.8 | 2.2 | 2.3 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 | 12 | 12 |
| Thermal Conductivity | (w/m.k) | 10 | 19-30 | 16-28 | 14-24 | 2-3 | 2-6 | 1.3-1.8 |
| Resistance to thermal shock,Minimum | TK? | 70 | 150 | 140 | 140 | 80 | 150 | 300 |
| Withstand voltage,Minimum | KV | 15 | 20 | 18 | 18 | 20 | 25 | - |
| Flexural strength | Mpa | 1000 | 300 | 280 | 240 | 120 | 120 | 30 |
| Sintering temperature | ℃ | 1500 | 1670 | 1600 | 1600 | 1250 | 1250 | 1250 |
| Maximum working temperature | ℃ | 1200 | 1500 | 1200 | 1200 | 800 | 1000 | 1000 |
Application
ceramic tubes are widely applied across multiple fields. In the metallurgical industry, they serve as protective sleeves for thermocouples and high-temperature furnace components. In the chemical industry, they act as pipelines for transporting corrosive fluids and reaction vessels linings. In the electronic industry, they are used as insulating parts for electronic components and semiconductor manufacturing equipment. They also play an important role in new energy sectors like solar energy and nuclear energy, as well as in environmental protection equipment, demonstrating irreplaceable value in high-demand working conditions.
Advantages
1. we support OEM and ODM;
2. We have a professional R&D team and technical support;
3. We provide real-time logistics update information;
4. We support 24-hour online service;
5. We support T/T,L/c payment;
6. We have a professional QC team to check the quality before delivery.
Certificate
FAQ
1. How can you get quotation?
Please kindly send me your drawing with technic requirement and demand quantity.
If you don't have the drawing, please kindly courier samples to us. we will quote our best price in 24 hours.
2. How can you get samples?
We can supply free samples if we have them in stock. If we haven't produce the products, we can supply some free samples after getting tool fee. Please take note that the courier fee should be at destination.
3. What’s the lead-time for samples and batch orders?
It is 18days for supplying samples. It is around 25days for batch orders.
4. Can I visit you?
Sure. If you're a volume buyer and would like to visit our in-house products and production line, please contact us to make an appointment.
Yixing Shenxing Technology Co., Ltd.
Phone/WeChat/WhatsApp:008618018373518
Email: yxshenxing88@vip.163.com
Teams: siri shenxing ceramic
Alumina Ceramic Advantages 1). Strong acid resistance2). Strong insulation3). Strong adsorption4). High thermal insulation performance 5). Chemical stability6). High compressive strength
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Ceramic Advantages 1). Strong acid resistance2). Strong insulation3). Strong adsorption4). High thermal insulation performance 5). Chemical stability6). High compressive strength
View More
Alumina Ceramic Advantages 1). Strong acid resistance2). Strong insulation3). Strong adsorption4). High thermal insulation performance 5). Chemical stability6). High compressive strength
View More
Ceramic Advantages 1). Strong acid resistance2). Strong insulation3). Strong adsorption4). High thermal insulation performance 5). Chemical stability6). High compressive strength
View More
Ceramic Advantages 1). Strong acid resistance2). Strong insulation3). Strong adsorption4). High thermal insulation performance 5). Chemical stability6). High compressive strength
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Alumina ceramic pipes are widely used in industries where traditional metal/plastic pipes fail to withstand wear, corrosion, or high temperatures. Abrasive Slurry Transport: Mining & Mineral Processing: For transporting tailings, mineral concentrates, and sand. Coal-Fired Power Plants: For conveying fly ash and bottom ash slurries. Steel Industry: For dust and fume extraction systems. Corrosive Chemical Handling: Chemical Plants: As liners or full pipes for aggressive acids and alkalis. Laboratory Equipment: For high-purity or high-temperature gas and fluid delivery. High-Temperature Applications: Thermocouple Protection Tubes: To shield temperature sensors in furnaces and kilns. Industrial Furnaces: As radiant tubes or for transporting hot gases. Welding Torch Nozzles: For their electrical insulation and heat resistance. Electrical Applications: Insulating Bushings and Sleeves: Where a pipe must provide a barrier that is both mechanically strong and electrically insulating.
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Email : yxshenxing88@vip.163.com
Address : No. 2022, Baoyang Road, Chuanbu Industrial Zone, Yixing City, Wuxi City, Jiangsu Province
2025-10-14
2025-10-14
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