Fused Silica Powder (SiO2-99.9)

Description

1. Product Overview

Fused Silica Powder (SiO₂-99.9) is a high-purity amorphous silica material produced by electrically fusing high-grade quartz to achieve exceptional chemical purity, thermal stability, and low thermal expansion. It is widely used in refractory systems, precision investment casting, ceramics, semiconductor-related materials, and high-performance composites where dimensional stability and resistance to thermal shock are critical. Its 99.9% SiO₂ purity supports consistent processing performance and minimizes contamination in demanding industrial applications. As a strategic specialty mineral, fused silica enables manufacturers to improve product reliability, process control, and performance in high-temperature environments.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Silicon Dioxide (SiO₂)
• Purity: ≥99.9% SiO₂
• Material Type: Fused/amorphous silica
• Appearance: Fine white to off-white powder
• Particle Size: Customizable according to application; micronized grades available
• Thermal Characteristics: Very low coefficient of thermal expansion; excellent thermal-shock resistance
• Chemical Resistance: High resistance to acids, alkalis, and most industrial chemicals
• Moisture: Low moisture content suitable for controlled industrial processing
• Grade Options: Industrial, high-purity, refractory, ceramic, casting, and application-specific grades
• Packaging Options: 25 kg bags, 500–1,000 kg jumbo bags, or customized bulk packaging
• Shelf Life: Typically 24 months when stored sealed in a cool, dry environment
• Storage: Protect from moisture, contamination, and direct exposure to weather

3. Core Industrial Applications

• Refractories: Used in high-temperature linings, furnace materials, crucibles, and thermal-resistant formulations due to its low thermal expansion and excellent thermal-shock resistance.
• Investment Casting: Provides dimensional stability, high-temperature resistance, and smooth surface characteristics for precision molds and foundry applications.
• Ceramics: Used as a high-purity silica component in technical ceramics and engineered ceramic formulations requiring controlled thermal behavior.
• Electronics & Semiconductor Materials: Supports high-purity applications where low contamination and stable dielectric and thermal characteristics are essential.
• Construction & Engineered Composites: Incorporated into specialty mortars, resin systems, quartz composites, and high-performance fillers.
• Coatings & Polymer Systems: Functions as a reinforcing and functional mineral filler where chemical resistance, hardness, and thermal stability are required.

Its controlled purity, particle-size distribution, low thermal expansion, and strong chemical resistance can deliver greater dimensional stability and longer service life than conventional crystalline silica alternatives in demanding applications.

4. Competitive Advantages

• Quality Consistency: ≥99.9% SiO₂ purity and controlled particle-size specifications support repeatable manufacturing performance.
• Supply Reliability: Suitable for regular industrial procurement programs with consistent batch requirements and scalable supply.
• Logistics Capability: Available in standard bags, jumbo bags, and customized packaging to support containerized international shipments.
• Price Competitiveness: Bulk procurement and application-specific grades enable optimized total material cost for industrial buyers.
• Performance & Durability: Excellent thermal-shock resistance, chemical stability, and low thermal expansion support demanding operating conditions.
• Sustainability: Long service life and high-performance material efficiency can reduce replacement frequency and associated material consumption.
• Technical Support & Documentation: Product specifications, certificates of analysis, safety documentation, and technical data can be provided according to buyer requirements.
• Strategic Sourcing Value: A dependable source of high-purity fused silica can strengthen supply-chain resilience while supporting consistent quality across high-value industrial production.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: Approximately 20–24 MT per 20-foot container, subject to packaging configuration, applicable payload limits, and destination requirements.