Description

Mullite is a highly stable aluminosilicate ceramic material, prized for its exceptional thermal and chemical resistance. Its primary value lies in its ability to withstand extreme temperatures and corrosive environments without significant degradation, making it a critical component in high-performance applications. This material is essential for industries such as advanced refractories, investment casting, and technical ceramics, where structural integrity under thermal stress is paramount.

Application

• Refractory Linings & Kiln Furniture: Core material for furnaces, kilns, and reactors in the steel, glass, and cement industries due to its high-temperature stability and creep resistance.
• Investment Casting Shells: Used in the production of precision metal castings for aerospace and turbine components, providing dimensional stability and minimal reactivity with molten metals.
• Technical & Structural Ceramics: A key ingredient in advanced ceramics for components requiring high strength, thermal shock resistance, and low thermal expansion, such as heat exchangers and burner nozzles.
• Catalyst Supports: Serves as a durable, inert substrate in catalytic converters and chemical processing where high surface area and thermal durability are needed.
• Electronic Substrates & Packaging: Utilized in substrates for microelectronics and as a packaging material for semiconductor devices, benefiting from its excellent electrical insulation and thermal properties.
• Thermal Spray Coatings: Applied as a protective coating on metal components to enhance resistance to wear, oxidation, and thermal cycling in harsh industrial environments.

Basic Information

Product Name	Mullite
CAS No.	1302-93-8
Molecular Formula	3Al2O3·2SiO2 (or Al6Si2O13)
Molecular Weight	426.05 g/mol
Synonyms	Aluminum Silicate (3:2); Sillimanite Group Mineral; Porcelainite; Kyanite (calcined); Andalusite (calcined); Alumina Silicate; Mullite Ceramic Powder; Mullite (Al6Si2O13)
EINECS	215-101-5

Quality Control

Our mullite is manufactured and tested under stringent quality protocols to ensure batch-to-batch consistency and performance reliability. We adhere to relevant industrial material standards, with key parameters including phase purity, particle size distribution, and chemical composition rigorously verified. A Certificate of Analysis (COA) detailing specific lot results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container sealed to protect the product from moisture absorption and contamination from atmospheric dust.

Specification

Item	Specification
Appearance	White to off-white powder
Phase Purity (Mullite Content)	≥ 98 %
Al2O3 Content	71 - 78 %
SiO2 Content	22 - 29 %
Bulk Density	Contact for details
Particle Size (D50)	Customizable (1 - 100 µm)
Loss on Ignition (LOI)	≤ 1.0 %
Major Impurities (Fe2O3, TiO2, etc.)	≤ 0.5 % (total)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.