Optimal Balance of High Purity and Thermal Stability — The Standard for Energy and Precision Industries
Grade B Premium Fused Silica is a high-quality material with ≥99.5% SiO₂ purity and ≥98% amorphous structure. It is widely supplied to industries requiring high reliability, including solar, electronics/semiconductor, precision casting, and specialty materials.
Key Features
- 🔥 Excellent Thermal Stability — ≥98% amorphous + thermal expansion < 0.8 → uniform performance in high-temperature environments
- 🧪 Strict Impurity Control — Al, Fe, etc. controlled at ppm levels → prevents chemical corrosion and discoloration
- ✨ High-Quality Appearance — Colorless transparent or high-purity white powder → enhances finished product reliability
- ⚙️ Custom Particle-Size Control — 60 mm granules to 1 µm (12,500 mesh) fine powder → process optimization available
Technical Specifications
| Item | Value | Note |
|---|---|---|
| SiO₂ (Purity) | > 99.5% | High-purity refined |
| Al (Aluminum) | < 0.03% | Chemical stability |
| Fe (Iron) | < 0.02% | Low-iron management |
| K (Potassium) | < 0.01% | Alkali minimized |
| Na (Sodium) | < 0.01% | Alkali minimized |
| Ca (Calcium) | < 0.01% | Impurity controlled |
| Mg (Magnesium) | < 0.003% | Trace management |
| Amorphous | > 98% | Excellent thermal properties |
| Thermal Expansion Coefficient | < 0.8 (×10⁻⁶/°C) | Excellent thermal-shock resistance |
| Moisture | < 0.1% | Ultra-dry state |
| Density | 1.8 – 2.4 ×10³ kg/m³ | Standard density |
| Country of Origin | China |
Main Applications
Solar · Electronics / Semiconductor · Precision Casting · Specialty Materials
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.