Alumina, also known as Aluminum Oxide(Al2O3), is the most popular ceramic material in the modern engineering industry. It is a relatively low-cost ceramic material with
good machinability. It has electrical insulation, heat-resistant, and high intensity. Also, it has a very wide range of applications, such as electrical insulation parts, furnace walls, furnace parts, jigs, and semiconductor-related parts.
Top Seiko machines alumina mainly 99.5% purity as well as 99.9%.
High intensity, Abrasion-resistant, Heat-resistant, Corrosion-resistant.
Melting point: 2054 C
Thermal shock: 200 C
Thermal conductivity: 30 W/mK
Thermal Expansion: 5.3 *10-6
Specific gravity: 3.9
Hardness: 18 GPa
Key Properties
High Hardness
Alumina has high wear resistance due to its high hardness. It also has good resistance to breaking and cracking due to its high fracture toughness and flexural strength.
High Temperature Resistance & Low Thermal Expansion
Alumina has excellent thermal stability up to 1300 ℃. Because it is an oxide ceramic material, it can be used in oxidizing atmospheres at high temperatures.
Its low coefficient of thermal expansion makes it ideal for high temperature applications where dimensional stability is required.
High Dielectric Strength
Alumina has excellent dielectric properties.
Good Chemical Resistance
Alumina has excellent corrosion resistance. It resists attack by most gases including acid gases. It is also plasma resistant.
Good Machinability
Alumina has a good machinability compared to other engineering ceramics. Because it has been a popular ceramic material, we have extensive experience in machining it. Machining to micron accuracy is possible.
Treated material : alumina
Applications : industrial, for aeronautics, for electronics, for the aerospace industry, for robotics
Production method : prototyping, large series
Other characteristics : CNC, precision, 5-axis, 3-axis
Certifications : ISO 9001, ISO 13485
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