Description

Steatite is a high-performance, naturally occurring magnesium silicate mineral, also known as soapstone, prized for its exceptional thermal stability, electrical insulation properties, and mechanical strength. This material is critical for applications requiring dimensional stability and resistance to thermal shock under extreme conditions. It is an essential industrial material for manufacturers in the electronics, ceramics, refractory, and metallurgical sectors seeking reliable, high-temperature components.

Application

• Electrical Insulators: Core material for high-voltage insulators, standoffs, and arc chutes due to its excellent dielectric strength and thermal endurance.
• Thermocouple Protection Tubes: Used in sheaths and tubes for temperature sensors in furnaces and molten metal applications.
• Refractory Components: Manufacture of furnace linings, kiln furniture, and other parts requiring resistance to high temperatures and corrosive atmospheres.
• Laboratory & Industrial Ware: Production of burner tips, heating element supports, and bench tops for its chemical inertness and heat resistance.
• Foundry & Metallurgy: Used in pouring spouts, riser sleeves, and other foundry consumables to manage molten metal flow.
• Precision Machined Parts: Fabrication of custom components like guides, bearings, and seals where low thermal expansion is critical.

Basic Information

Product Name	Steatite
CAS No.	14378-12-2
Molecular Formula	Mg3Si4O10(OH)2
Molecular Weight	379.27 g/mol (for the ideal talc formula)
Synonyms	Soapstone; Talc (steatitic); French Chalk; Magnesium Silicate Hydroxide; Steatite Ceramic; Lava; Agalite; Mineral Talc; Hydrous Magnesium Silicate
EINECS	238-340-9

Quality Control

Our Steatite is sourced and processed to meet stringent quality standards for industrial applications. We ensure batch-to-batch consistency through rigorous testing of key parameters including mineralogical composition, particle size distribution, and loss on ignition. Certificates of Analysis (COA) detailing specific grade specifications are available upon request to support your quality assurance protocols.

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 prevent moisture absorption and contamination from other materials.

Specification

Item	Specification
Appearance	White to off-white powder or solid lumps
Identification (XRD)	Complies (Magnesium Silicate Hydroxide)
Assay (as MgO)	≥ 30.0 %
Assay (as SiO2)	≥ 55.0 %
Loss on Ignition (LOI)	≤ 8.0 %
Particle Size (Typical)	Contact for details
Acid Soluble Iron (as Fe2O3)	≤ 1.0 %
Moisture Content	≤ 2.0 %

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