Alumina ceramic components, built to your spec
Alumina (aluminium oxide, Al2O3) is the workhorse of technical ceramics. We manufacture it in purities from 92% to 99.8% for the applications that demand the most: wear resistance, structural integrity, electrical insulation, and corrosion resistance.
What is alumina ceramic?
Alumina ceramic, also known as aluminium oxide (Al2O3), is a versatile, high-performance industrial ceramic. It is prized for exceptional hardness, thermal stability, and electrical insulation.
It is the most widely specified technical ceramic in the world, and for good reason: across mining wear parts, electrical insulators, and precision components, alumina delivers performance that metals and polymers cannot match in the same envelope.
Properties of alumina ceramics
Purity 92-99.8%
Higher alumina content gives greater wear resistance, corrosion resistance, and dielectric strength. We match the grade to your application and budget.
Exceptional hardness
Among the hardest engineering ceramics available, ideal for high-wear and abrasive environments.
Electrical insulation
An excellent insulator with high dielectric strength and low dielectric loss. Resistance increases with purity.
Thermal performance
High melting point and strong mechanical strength, with excellent thermal conductivity. Mechanical strength reduces above 1000 degrees C.
Chemical stability
Resistant to acids and most aggressive chemical environments, suiting pump parts and pipe linings.
Where alumina ceramics are used
Wear parts
Wear plates, liners, and pipe linings for abrasive and high-impact environments in mining and processing.
Acid-resistant components
Pump parts and linings that survive chemically aggressive duty.
Electrical insulators
High-purity alumina with low dielectric loss for electronics and high-voltage applications.
Textile and metalworking
Wear guides, knives, and abrasive grains where hardness is critical.
Lighting and detection
Transparent alumina for high-pressure sodium lamps and infrared windows.
All parts are fired in our temperature-controlled continuous tunnel kilns, capable of very high production runs up to a few hundred thousand parts per month.
Alumina Ceramics: common questions
What alumina purities do you offer?
Can you make custom alumina shapes?
What volumes can you run?
Related products
Silicon Carbide
Kiln muffles, tubes, liners, plates, and diamond-lapped rollers over 1000mm. Over 30 years of SiC manufacture.
Ceramic Porcelain Insulators
Power parts, porcelain bodies, glazed high-voltage insulators, and ceramic heat sinks. Custom shapes a specialty.
Dry Pressing
High-volume, low-unit-cost forming. Globe holders, fish-spine beads, bushes, and complex shapes at scale.
Need alumina ceramics?
Send a drawing, a sample, or just a description of what is failing. We will reply within 2 business days with whether we can make it, how, and at what price.