Unified α-quartz crystalline silica lineup — spherical, round-corner, angular, low-α, surface-modified and quartz sand grades in one place
Quartz · Crystalline Silica (α-Quartz) is a high-purity α-phase SiO₂ material refined from natural quartz ore through classification and crystal-shape control. Compared with amorphous fused silica, it offers superior hardness (Mohs 7), excellent chemical stability, cost-competitive pricing and abundant raw-material availability, making it the industrial workhorse silica. SiLiCA consolidates its crystalline lineup — round-corner crystalline (SN-YJG), angular crystalline (SN-JG), low-α crystalline (SN-CL), surface-modified crystalline (SN-HJG) and crystalline quartz sand (SN-CS) — under one category, custom-processed for CCL/PCB, semiconductor EMC, precision casting, ceramics, industrial coatings and high-wear composites.
Each product also remains listed under its original shape/function category (spherical, round-corner, angular, low-α, surface-modified, silica powder & granule), so you can navigate by form factor as well.
Key Features
- 💎 α-Quartz Crystal Structure — α-phase crystalline SiO₂ from natural quartz — high hardness (Mohs 7) and excellent chemical stability
- 🔷 Full Shape Lineup — Round-corner (SN-YJG), angular (SN-JG), low-α (SN-CL), surface-modified (SN-HJG), quartz sand (SN-CS)
- ☢️ Low-α Grade Available — SN-CL — α ≤ 0.001 cph/cm² for HBM, DDR5, AI-semiconductor soft-error suppression
- ⚗️ Surface-Modified Crystalline — SN-HJG — silane-coupled to maximize adhesion and dispersion in organic matrices
- 💰 Cost-Competitive & Stable Supply — Lower cost than fused variants with abundant raw-material supply — ideal for high-volume industrial fillers
- 📐 Wide PSD & Custom Supply — From fine powder (D50 µm) to quartz sand granules — custom per requirement
Technical Specifications
| Item | Value |
|---|---|
| Product Lineup | SN-YJG · SN-JG · SN-CL · SN-HJG · SN-CS |
| Crystal Structure | α-Quartz (Trigonal, crystalline) |
| SiO₂ Purity Range | ≥99.5% – ≥99.9% (by grade) |
| Hardness (Mohs) | 7 |
| Shape Options | Round-corner · angular · low-α · surface-modified · quartz sand |
| Low-α Option | SN-CL grade — α ≤ 0.001 cph/cm² |
| Surface Modification | SN-HJG (silane-coupled) grade available |
| Packaging | 10 / 20 kg bag · 500 kg bulk · OEM |
| Country of Origin | China |
Product Lineup
- SN-YJG — Crystalline Round-Corner (CCL, conductive paste, industrial coatings)
- SN-JG — Crystalline Angular (standard filler, high-wear composites)
- SN-CL — Low-α Crystalline — α ≤ 0.001 cph/cm²
- SN-HJG — Surface-Modified Crystalline — silane-coupled
- SN-CS — Crystalline Quartz Sand (glass raw material, precision casting, abrasives)
- SN-HS12 — High-Purity Crystalline Silica Micro-Powder (SiO₂ ≥99.85% · D50 12±2 µm)
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.