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Alumina Foam Filter

Alumina Foam Filter

An alumina foam filter is a porous ceramic material made of alumina, also known as aluminum oxide (Al2O3), that is used for filtration in various industrial applications. Alumina is a highly durable and heat-resistant material that is widely used in various industrial applications, such as electrical insulation, refractory lining, and high-temperature processing.

Alumina foam filters are typically produced through a process of shaping and sintering of alumina powder, resulting in a highly porous and uniform ceramic structure. They can vary in size, shape, and pore size depending on the intended use and application.

Alumina foam filters have excellent mechanical and thermal properties, including high strength, hardness, and thermal conductivity. They are also resistant to chemical corrosion, making them suitable for use in harsh and corrosive environments.

Alumina foam filters are commonly used in the filtration of molten metals, such as aluminum, magnesium, and copper alloys, in foundry and casting operations. They are highly effective in removing impurities and improving the quality of the final product.

Alumina foam filters can also be used in other industrial applications, such as in wastewater treatment and gas filtration. They provide reliable and efficient filtration while being resistant to clogging and corrosion.

Overall, alumina foam filters are a reliable and versatile material that offer excellent performance and longevity in a variety of industrial applications. They provide exceptional properties and durability in harsh environments, while maintaining high filtration efficiency and reliability over time.


Catalog No. CERAMICS
Size Customized
Material Al2O3
Purity 95% 99% 99.7%
Density 3.8~3.9 g/cm3


At CG Material, we offer high quality Alumina Foam Filter with exceptional purity and precision in terms of size. Our products range in diameter from 1mm to 100mm and have a purity level of up to 99.8%. We also provide custom manufacturing options for special shapes to meet specific needs.



Alumina Foam Filter Specifications 

Physical Properties

Working Temperature ≤1200°C
Porosity 80~90%
Compression Strength
(Room Temperature)
Volume Density ≤0.5g/cm3
Thermal Shock Resistance 800°C—room temperature 5 times
Application non-ferrous and alumina alloys,
high temperature gas filter,
chemical fillings and catalysis carrier etc.


Chemical Composition

Al2O3 SiC SiO2 ZrO2 Others
85 % approx 6% approx 9% approx


Alumina Foam Filter Applications

Alumina foam filters can be used in the following applications:
– Molten aluminum
– Copper-based alloys
– Ferrous metals including grey
– Ductile and steel alloy



We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.



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