Products Description
Silicon Metal 441 is a premium-grade metallurgical material widely used in aluminum alloy production, silicone manufacturing, and specialty steelmaking. The designation "441" refers to its typical impurity limits: Iron ≤ 0.4%, Aluminum ≤ 0.4%, Calcium ≤ 0.1% . This balanced composition makes Silicon Metal 441 an ideal choice for applications requiring consistent quality without the higher cost of ultra-pure grades like 553 or 3303.
Chemical Composition & Specification Table 📊
The table below provides detailed specification limits for Silicon Metal 441, including typical values and testing standards.
| Parameter | Specification (wt%) | Typical Value (wt%) | Testing Method |
|---|---|---|---|
| Silicon (Si) | ≥ 99.0% | 99.2 – 99.5% | ICP-AES |
| Iron (Fe) | ≤ 0.4% | 0.25 – 0.35% | ICP-AES |
| Aluminum (Al) | ≤ 0.4% | 0.20 – 0.35% | ICP-AES |
| Calcium (Ca) | ≤ 0.1% | 0.05 – 0.08% | ICP-AES |
| Phosphorus (P) | ≤ 0.005% | 0.003% | Spectrometry |
| Sulfur (S) | ≤ 0.005% | 0.002% | Combustion Analysis |
| Carbon (C) | ≤ 0.1% | 0.05% | Combustion Analysis |
| Titanium (Ti) | ≤ 0.05% | 0.02% | ICP-AES |
| Manganese (Mn) | ≤ 0.1% | 0.04% | ICP-AES |
Available Forms:
Lump: 10–100 mm, 10–50 mm, 20–80 mm
Granular: 3–10 mm, 1–3 mm, 0.2–1 mm
Powder: 200 mesh, 325 mesh, 400 mesh
Packaging Options:
- 1 MT jumbo bags (plastic woven with inner liner)
- 25 kg small bags on pallets
- Bulk container loading (20-25 MT per 20' container)
Key Applications & End-Use Industries 🏭
Aluminum Alloy Production 🚗
The largest consumer of Silicon Metal 441 is the aluminum industry, where it is added to molten aluminum to produce aluminum-silicon alloys (4xxx and 6xxx series). These alloys offer improved castability, higher strength, better wear resistance, and reduced thermal expansion. Typical end products include:
- Automotive engine blocks and cylinder heads
- Wheel rims and suspension components
- Architectural extrusions and window frames
- Heat sinks and electronic enclosures
Silicone & Chemical Manufacturing 🧪
Silicon Metal 441 reacts with methyl chloride in the direct synthesis process to produce chlorosilanes, the building blocks for all silicone products. The controlled iron and aluminum content ensures optimal reaction rates and yields. Silicone applications include:
Sealants, adhesives, and coatings
- Medical implants and tubing
- Electrical insulating materials
- Personal care products (shampoos, lotions)
Specialty Steel & Metallurgy 🔧
In steelmaking, Silicon Metal 441 serves as a deoxidizer and alloying agent, improving steel's strength, hardness, and magnetic properties. It is particularly valued in:
- Electrical steels for transformers and motors
- Stainless and heat-resistant alloys
- Spring steels and tool steels
Logistics, Storage & Safety 📦
Shipping Information
| Parameter | Details |
|---|---|
| HS Code | 28046900 |
| Supply Capacity | 500-1000 MT per month |
| Lead Time | 7-15 days after order confirmation |
| Port of Loading | Tianjin, Qingdao, Shanghai, Ningbo |
| Payment Terms | T/T (30% deposit, 70% against BL copy), L/C at sight |
Storage Recommendations
- Store in dry, well-ventilated warehouse
- Keep away from moisture and acids
- Avoid contamination with other materials
- Shelf life: Unlimited when stored properly
Safety Information
Silicon Metal 441 is generally considered non-hazardous in solid form. However, fine powder may pose a dust explosion risk. Recommended precautions:
- Use dust collection systems when handling powders
- Avoid inhalation of dust (use N95 masks)
- Use explosion-proof electrical equipment in powder handling areas
- In case of fire, use dry powder or sand (DO NOT use water)
📞 Contact Us Today
For pricing, samples, or technical support regarding Silicon Metal 441, please contact our sales team. We offer competitive pricing, flexible packaging, and reliable delivery worldwide.
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