100% Amorphous Ultra-Precision Material That Delivers Semiconductor-Grade Reliability
Our Grade A Fused Silica is an amorphous silicon dioxide (SiO₂) material produced by melting natural quartz at ultra-high temperatures and rapidly quenching it. It is recognized as a core raw material across advanced industries such as semiconductors, precision chemicals, optics, and high-temperature refractory applications. Compared to standard fused silica, this product dramatically reduces impurity content through rigorous quality control while simultaneously securing outstanding physical properties and chemical stability — delivering top-tier performance even in the most demanding processes.
Key Features
- 🔬 Perfect Amorphous Structure — 100% amorphous — zero crystallization or deformation even at high temperatures
- 🌡️ Ultra-Low Thermal Expansion — Coefficient of thermal expansion < 0.6 (×10⁻⁶/°C) — highly resistant to thermal shock
- 🧼 Ultra-High Purity Management — Total metallic impurities < 0.03% — eliminates yield-loss factors in semiconductor production
- ⚡ Superior Electrical Insulation — EC < 3 µs/cm, Cl < 3 ppm — optimized insulation for electronic components
- 🔧 Custom Particle Sizes — Processable from 60 mm granules down to 1 µm (12,500 mesh) fine powder
- ✅ Stable Supply — Stable supply chain backed by strict quality control
Technical Specifications
| Item | Value | Note |
|---|---|---|
| SiO₂ (Purity) | ≥ 99.9% | Ultra-high purity |
| Al (Aluminum) | < 0.01% | Trace amount |
| Fe (Iron) | < 0.005% | Trace amount |
| K (Potassium) | < 0.003% | Trace amount |
| Na (Sodium) | < 0.003% | Trace amount |
| Ca (Calcium) | < 0.003% | Trace amount |
| Mg (Magnesium) | < 0.001% | Trace amount |
| Amorphous | 100% | Fully amorphous |
| Thermal Expansion Coefficient | < 0.6 (×10⁻⁶/°C) | Ultra-low expansion |
| Moisture | < 0.1% | Dry controlled |
| Density | 1.8 – 2.4 ×10³ kg/m³ | Uniform |
| Mohs Hardness | 7 | Wear-resistant |
| Aqueous Extract EC | < 3 µs/cm | High insulation |
| Aqueous Extract Cl | < 3 ppm | Ultra-low chlorine |
| Aqueous Extract pH | 6.5 ± 1 | Neutral stability |
| Country of Origin | China |
Main Applications
Semiconductor · Optics · Display · Aerospace & Defense · Medical · Energy
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.