Alumina (Al?O?) ceramic is a nonporous material known for its superior mechanical and electrical properties, making it ideal for use in harsh industrial environments. Offering exceptional resistance to wear, corrosion, and high temperatures, alumina ceramic is a versatile choice for numerous engineering applications. It is widely used across industries due to its remarkable price/performance ratio, making it cost-effective without compromising quality.
Unipretec provides high-purity alumina in various grades, from 95% to 99.8%, ensuring a solution tailored to specific performance and environmental requirements. The choice of grade is essential to achieving the best balance between strength, insulation, and cost-efficiency.

Professional engineers can leverage alumina ceramics for applications ranging from electrical components and mechanical parts to substrates for electronics. The material's ability to withstand high temperatures—up to 1,800°C—enhances the reliability of components in critical applications, especially in high-temperature and high-voltage environments. By selecting the appropriate grade of alumina, engineers can ensure optimal performance in their designs, improve durability, and reduce operational costs.

Long Description with Bullet Points:
Key Features & Applications of Alumina Ceramic

• Acid & Alkali Resistance: Resistant to both acidic and alkaline environments, ideal for corrosive settings.
• High Hardness & Wear Resistance: Exceptional wear and abrasion resistance, making it suitable for components subject to mechanical stress.
• Electrical Insulation: High dielectric strength, ensuring reliable electrical insulation for high-voltage applications.
• Temperature Resistance: Serviceable at temperatures up to 1,800°C, ideal for high-temperature components.

Available Grades and Their Applications:

• 95% Alumina Ceramic (A950):

  • Applications: Plungers, shafts, pins, electrical insulators, high-temperature components like thermocouple tubes.
  • Features: Strong mechanical strength, excellent electrical insulation at high temperatures (up to 1,500°C).

• 96% Alumina Ceramic (A960):

  • Applications: Ceramic substrates, electrical insulators, thin-film and thick-film electronics, PCB substrates.
  • Features: Electrical stability, low thermal expansion, and good thermal conductivity. Ideal for cost-effective and durable substrates.

• 99% Alumina Ceramic (A990):

  • Applications: Sintering furnace plates, pressure washer pump pistons, metering pumps, seal rings.
  • Features: Enhanced wear and corrosion resistance, can withstand up to 1,650°C, can be machined and polished into complex components.

• 99.8% Alumina Ceramic (A998):

  • Applications: Extreme-temperature components, high-performance mechanical and electrical parts requiring superior surface finish.
  • Features: Ultra-high purity, exceptional hardness, can be polished to a smooth finish (Ra 0.05μm), performs well under extreme conditions.

Choosing the correct alumina grade helps engineers meet specific requirements for strength, insulation, and temperature resistance, thereby improving overall performance and efficiency.