Description

Alumina-Silica Fibers are a class of high-performance, synthetic inorganic fibers engineered for exceptional thermal and chemical stability. These fibers are critical for applications demanding lightweight, durable insulation and reinforcement under extreme conditions. They are essential materials for industries including aerospace, automotive, metallurgy, and advanced ceramics manufacturing, where they provide solutions for energy efficiency and structural integrity.

Application

• High-Temperature Insulation: Primary material for furnace linings, kiln furniture, and thermal baffles in industrial heating applications.
• Reinforcement in Composites: Used to enhance the mechanical strength and thermal shock resistance of metal-matrix (MMC) and ceramic-matrix composites (CMC).
• Automotive & Aerospace: Key component in exhaust heat shields, firewalls, and other components requiring lightweight thermal management.
• Refractory Textiles & Blankets: Manufactured into felts, boards, and woven textiles for flexible insulation systems.
• Catalyst Supports: Serve as a stable, high-surface-area substrate in catalytic converters and chemical processing.
• Filtration Media: Used in high-temperature baghouse filters for molten metal and fine particulate filtration.
• Sealing & Gasketing: Formulated into high-temperature seals and gaskets for industrial equipment.

Basic Information

Item	Details
Product Name	Alumina-Silica Fibers
CAS No.	308076-54-2
Molecular Formula	Al2O3·SiO2 (variable composition)
Molecular Weight	N/A (Polymeric inorganic material)
Synonyms	Aluminum Silicate Fibers; Refractory Ceramic Fibers (RCF); High Alumina Fibers; AS Fibers; Alumino-Silicate Fibers; Synthetic Mineral Fibers (SMF); Kaolin Wool; Ceramic Fiber Wool
EINECS	Contact for details

Quality Control

Our Alumina-Silica Fibers are manufactured under controlled conditions to ensure batch-to-batch consistency and performance. Quality is verified through a series of tests including chemical composition analysis (via XRF), fiber diameter distribution, and thermal stability measurements. Certificates of Analysis (COA) detailing lot-specific parameters 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, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and strong alkalis. The material is hygroscopic; ensure containers are sealed after use to prevent moisture absorption, which can affect handling properties.

Specification

Item	Specification
Appearance	White to off-white fibrous mass
Al2O3 Content	40 - 60 %
SiO2 Content	40 - 60 %
Fiber Diameter (Mean)	2 - 5 µm
Shot Content (Non-fibrous)	< 15 %
Classification Temperature	1260 - 1430 °C
Bulk Density	Contact for details

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