shenxing ceramic high precision corrosion resistant 99% alumina ceramic washer valve plate

Alumina ceramic washer is a high-performance mechanical and electronic component made primarily from alumina (Al₂O₃) powder, via processes like molding and high-temperature sintering. It combines exceptional material properties to meet demands in harsh or precision-dependent applications across industries.



Key Performance Advantages

  • Electrical Insulation: Non-conductive with high insulation resistance and breakdown voltage, preventing leakage or short circuits in electrical equipment.
  • Thermal Conductivity: Efficient heat transfer (20–30 W/m·K) facilitates heat dissipation between components like power devices and radiators.
  • Durability: Exceptionally high hardness (Mohs hardness 9, second only to diamond) and wear resistance, ensuring long-term dimensional stability.
  • Extreme Environment Resistance: Withstands temperatures up to 1600℃ without deformation, and resists corrosion from acids, alkalis, and most chemical media.
  • Low Thermal Expansion: Minimal expansion under temperature fluctuations, maintaining tight fits in precision assemblies.

 

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


 

Specifically used for high-temperature and high-voltage insulation parts, circuit substrates, high-temperature devices, etc. As the main representative of precision ceramic materials, it is widely used in industries such as semiconductors, petrochemicals, and electronics.

 

 

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.

 

 


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