Description

Cordierite is a magnesium aluminum silicate mineral prized for its exceptional thermal stability, low thermal expansion, and excellent electrical insulation properties. This makes it a critical engineered ceramic material for demanding high-temperature industrial applications. It is essential for manufacturers in the automotive, electronics, and metallurgical sectors who require reliable, durable components that can withstand severe thermal cycling and corrosive environments.

Application

• Automotive Catalysts: As the primary substrate material for catalytic converters and diesel particulate filters (DPFs) due to its thermal shock resistance and honeycomb structure.
• Kiln Furniture & Refractories: For manufacturing saggers, setters, and kiln furniture in ceramic firing, offering high-temperature strength and repeated use capability.
• Electronic Substrates & Insulators: Used in circuit boards, chip carriers, and insulating components where low dielectric constant and thermal management are crucial.
• Thermal Barrier Coatings: As a component in coatings for gas turbine engines and industrial heat shields to protect metal surfaces.
• Porous Ceramics & Filters: For high-temperature gas and molten metal filtration applications, leveraging its controlled porosity and chemical inertness.
• Radomes & Windows: In aerospace and defense for missile radomes and infrared windows due to its transparency to specific electromagnetic wavelengths.

Basic Information

Product Name	Cordierite
CAS No.	886436-25-5
Molecular Formula	Mg2Al4Si5O18
Molecular Weight	584.95 g/mol
Synonyms	Cordierite (Mineral); Iolite; Dichroite; Magnesium Aluminum Silicate; (Mg,Fe)2Al4Si5O18; 2MgO·2Al2O3·5SiO2; Magnesium Aluminosilicate
EINECS	Contact for details

Quality Control

Our cordierite powders and engineered components are manufactured under strict quality protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through a comprehensive suite of tests including chemical composition (XRF), phase purity (XRD), particle size distribution (PSD), and key physical properties like thermal expansion coefficient (CTE) and porosity. Certificates of Analysis (COA) detailing all specifications are provided with each shipment.

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). As a fine ceramic powder, it is hygroscopic (moisture-sensitive) and should be kept away from sources of moisture to prevent caking and handling issues.

Specification

Item	Specification
Appearance	White to pale blue powder
Phase Purity (Cordierite, by XRD)	≥ 95%
Chemical Composition (MgO:Al2O3:SiO2)	~13.8% : ~34.9% : ~51.3%
Particle Size (D50)	1-10 µm (Customizable)
Specific Surface Area (BET)	2-10 m²/g
Thermal Expansion Coefficient (25-800°C)	1.0 - 2.5 x 10-6 /°C
Loss on Ignition (LOI)	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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