At Beifang Alloy, we understand that silicon metal quality directly impacts performance in industries like solar, electronics, and aluminum alloys. This guide covers procurement requirements, industry standards, quality verification methods, and supplier selection to help buyers secure premium-grade silicon metal.
| Application | Required Purity | Critical Impurity Limits |
|---|---|---|
| Solar Grade (4N-6N) | 99.99%-99.9999% Si | B/P < 1ppm, Fe < 10ppm |
| Electronics (3N-5N) | 99.9%-99.999% Si | Al < 50ppm, Ca < 20ppm |
| Aluminum Alloys | 98.5%-99.5% Si | Fe < 0.5%, Al < 0.2% |
✔ Certified Purity – With GDMS/ICP-MS test reports
✔ Traceability – Quartz ore source documentation
✔ Moisture Control – Nitrogen-packed shipping to prevent oxidation
🔹 Solar Boom: Polysilicon makers demand 99.999% Si with <0.5ppm boron
🔹 Semiconductor Shortages: 5N+ silicon prices up 22% YoY
🔹 Stricter Regulations: EU CBAM requiring carbon footprint disclosures
✔ Raw Materials: Verify quartz purity (>99.2% SiO₂)
✔ Smelting Process: Submerged arc furnaces with AI monitoring
✔ Packaging: Vacuum-sealed bags with moisture indicators
| Criteria | Beifang Alloy | Market Average |
|---|---|---|
| Purity Verification | GDMS for 4N+ grades | XRF only (<99.9% Si) |
| Boron Control | <0.5ppm (solar grade) | 1-5ppm |
| Carbon Footprint | 2.4t CO₂/MT (hydro-powered) | 3.5-4t CO₂/MT |
| Testing Frequency | Every 2 hours (automated XRF) | Daily manual tests |
Case Study: A Japanese solar firm reduced wafer defects by 18% using our 5N silicon with <0.3ppm boron.
✅ In-House Lab: GDMS, ICP-OES, and LECO analysis
✅ AI Process Control: 99.7% batch consistency
✅ CBAM Compliance: Full carbon accounting reports
Request Quality Certificates:
🌐 www.beifangalloy.com
✉ info@hnxyie.com
