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Aluminum Silicate

Aluminium silicate refers to chemical compounds which are derived from aluminium oxide (Al2O3) and silicon dioxide (SiO2). The chemical formula of aluminum silicate is Al2SiO5, but aluminum silicate is often written as Al2O3·SiO2, because most silicates have very complex structures. Aluminium silicate is used in the manufacture of glass, ceramics, paints, printing inks, rubber, and plastics.

Read more: An Overview of Aluminium Silicate Ceramics

Aluminium Silicate Properties:

  • Good dielectric and thermal insulation capabilities
  • Resistant to heat, thermal shock, wear resistance, and corrosion resistance
  • Low hygroscopicity





Aluminum Silicate Specification


 Super white fine powder

Sp. gravity

 2.70 - 2.80

PH Value

 8.0 - 8.5

Volatile matter


Oil Absorption

 80 ± 5%

Refractive Index


Mhos hardness

 1 - 2

Aluminum Silicate Common Constituent Minerals

There are three common minerals composed of aluminum silicate, most of which are found in metamorphic rocks.

The composition of these three ores is aluminum silicate, but their structure is different, so they are homogeneous and different crystals.

Aluminum Silicate Applications

ACM Ceramic Product Video

Your Aluminum Silicate Ceramics Supplier

Advanced Ceramic Materials is a leading supplier of aluminum silicate ceramic products of the highest quality for a wide range of applications. We are happy to provide advice on materials, design, and application. Feel free to contact us for any questions about aluminum silicate or other ceramic materials that are not listed on the website. 


Q: What Is Aluminum Silicate Ceramic?
A: Aluminum silicate refers to compounds gotten from both aluminum oxide and silicon dioxide. It features good thermal shock resistance and easily replaces carbon fixtures in many applications. There are various types of aluminum silicate, and these compounds could come in a natural or synthetic form. Natural minerals of aluminum silicate have a common chemical formula-Al2SiO5.
Q: What Are the Different Forms of Aluminum Silicate Ceramic?
A: Kyanite - This form of aluminum silicate is often found in metamorphic and sedimentary rocks. It is also referred to as disthene or cyanite. Kyanite is more stable at high pressure than the other aluminum silicate minerals. The strength of kyanite is highly dependent on its direction. For instance, it shows more strength perpendicular to an axis and shows less strength parallel to the same axis. For this reason, it is described as anisotropic. Andalusite – This form of aluminum silicate is usually found in metamorphic rocks. It is named after a community in Spain known as Andalusia. Like other aluminum silicate minerals, its chemical formula is Al2SiO5. It has an orthorhombic crystal lattice. Sillimanite - This tough aluminum silicate compound derived its name from an American chemist called Benjamin Silliman. It is usually stable under high temperatures. Sillimanite is usually gotten from sedimentary rocks. Sillimanite has an orthorhombic crystal system.
Q: What Are the Uses of Aluminum Silicate Ceramic?
A: - Refractory Bricks - Porcelain Fixtures - Jewelry - Cosmetics - Medicine - Filler - Pregnancy
Q: Common Minerals of Aluminum Silicate?
A: - Al2SiO5, (Al2O3?SiO2), which occurs naturally as the minerals andalusite, kyanite and sillimanite which have different crystal structures. - Al2Si2O5(OH)4, (Al2O3?2SiO2?2H2O), which occurs naturally as the mineral kaolinite and is also called aluminium silicate dihydrate. It is a fine white powder and is used as a filler in paper and rubber and also used in paints. - Al2Si2O7, (Al2O3?2SiO2), called metakaolinite, formed from kaolin by heating at 450 °C (842 °F).[2] - Al6Si2O13, (3Al2O3?2SiO2), the mineral mullite, the only thermodynamically stable intermediate phase in the Al2O3-SiO2 system at atmospheric pressure.[3] This also called '3:2 mullite' to distinguish it from 2Al2O3?SiO2, Al4SiO8 '2:1 mullite'. - 2Al2O3?SiO2, Al4SiO8 '2:1 mullite'.
Q: Do You Supply Customized Ceramic Components?
A: We can supply customized products according to the drawings you provide, and our engineers can also provide technical support and advice for your design.
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