Mullite Sand/Mullite Powder for Precision Casting

Mullite sand/Mullite Powder is made from high quality hard clay and processed though high temperature calcination and special processing. The product is featured with excellent casting performance

Specification (Size):

0.1-0.3mm, 0.1-0.4mm, 0.18-0.3mm, 0.18-0.5mm, 0.3-0.7mm, 0.3-0.8mm, 0.425-0.85mm 0.5-1.0mm, 0.7-1.0mm, 0.7-1.5mm, -120Mesh, -200Mesh, -325Mesh, etc.

Special grade can be customized


Advantage of Mullite Sand\Mullite Powder

Low Thermal Expansion Coefficient

Mullite sand and mullite powder are renowned for their exceptional properties, making them indispensable in various industrial applications. These materials exhibit a low thermal expansion coefficient, which is a crucial feature in environments subjected to extreme temperature variations. Their ability to withstand thermal stress and fluctuations makes them highly sought after in industries where temperature stability is paramount.

Good Collapsibility

One of the notable characteristics of mullite sand and mullite powder is their good collapsibility. This property is essential in applications where materials need to undergo repeated thermal cycling or undergo structural changes. The excellent collapsibility of mullite contributes to the overall durability and reliability of products and structures in which it is employed.

High Chemical Stability and Corrosion Resistance

Furthermore, these materials boast high chemical stability and corrosion resistance. This makes them ideal for applications where exposure to aggressive chemicals or harsh environmental conditions is common. Industries such as metallurgy, ceramics, and glass manufacturing benefit significantly from the chemical resilience of mullite sand and mullite powder, ensuring the longevity and performance of critical components.

Uniform Size Distribution, Good Mold Shell Performance

In addition to their thermal and chemical properties, mullite sand and mullite powder are known for their uniform size distribution. This uniformity is a key factor in achieving consistent results in various processes, particularly in the casting and molding industries. The materials' good mold shell performance further enhances their usability in shaping intricate and precise molds, facilitating the production of high-quality components.

Low Iron and Dust Content

An additional advantage of mullite sand and mullite powder lies in their low iron and dust content. This characteristic is particularly important in applications where contamination must be minimized. The low impurity levels contribute to the overall purity of the end product, making these materials ideal for use in applications such as semiconductor manufacturing and aerospace engineering.


Are you interested in learning more about mullite sand or mullite powder and how they can benefit you? Contact us today to secure an expert consultation!

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Technical Index:

Technical Date
ItemSiO2Al2O3Fe2O3Dust ConcentrationBulk Density
Range44-50%45-51%2% Max150~350ppm2.4g/cm3 Min


It is widely used in precision casting industry

Mullite Sand/Mullite Powder for Precision Casting


Mullite Sand/Mullite Powder for Precision Casting