Products Description
Silicon Metal 3303 is a high-purity metallurgical grade named after its typical impurity limits: Fe ≤ 0.3%, Al ≤ 0.3%, and Ca ≤ 0.03%. With a minimum silicon content of 99.8%, this grade offers significantly tighter specifications than standard 553 grade, making it the preferred choice for premium aluminum alloys, silicone polymers, and polysilicon feedstock.
Chemical Composition
| Parameter | Guaranteed (Max) | Typical Value | Test Method |
|---|---|---|---|
| Silicon (Si) | ≥ 99.8% | 99.82 – 99.88% | ICP-OES / Gravimetric |
| Iron (Fe) | ≤ 0.30% | 0.18 – 0.25% | ICP-OES |
| Aluminum (Al) | ≤ 0.30% | 0.20 – 0.28% | ICP-OES |
| Calcium (Ca) | ≤ 0.03% | 0.010 – 0.020% | ICP-OES |
| Phosphorus (P) | ≤ 0.005% | 0.002 – 0.004% | Spectrometry |
| Sulfur (S) | ≤ 0.005% | 0.001 – 0.003% | Combustion |
| Carbon (C) | ≤ 0.10% | 0.04 – 0.07% | Combustion |
Key Features &Typical Applications
Key Features:
✅ High silicon purity (99.8% min) ensures consistent alloy chemistry
✅ Very low calcium (≤0.03%) reduces slag formation and improves recovery
✅ Balanced iron & aluminum (≤0.3% each) for predictable melt behavior
✅ Uniform block size (10–100 mm or custom) for easy furnace charging
✅ Excellent solubility in aluminum, iron, and chemical processes
✅ ISO 9001:2015 certified production with 100% batch testing
Typical Applications:
| Industry | Application | Why 3303 Grade? |
|---|---|---|
| 🏭 Premium Aluminum Alloys | A356, A357, 4043 (welding wire), forged wheels | Low Ca reduces dross; high Si improves fluidity |
| 🧪 Silicone Polymers | Sealants, lubricants, medical silicones | Very low Ca prevents unwanted reactions |
| ⚡ Polysilicon (Solar Grade) | Feedstock for photovoltaic cells | High purity minimizes refining cost |
| 🔥 Specialty Refractories | High-temperature ceramics, Si3N4 bonding | Consistent chemistry ensures bonding quality |
Packaging, Shipping & Logistics
We offer flexible, safe, and cost-effective packaging solutions for global delivery.
| Packaging Type | Net Weight | Container Loading (20' FCL) | Best For |
|---|---|---|---|
| Jumbo bags | 1000 kg / 1250 kg | 20–25 MT | Bulk industrial users, easy handling with forklift |
| Small bags + master cartons | 25 kg bags, 40 bags per pallet | 25 MT (1000 bags) | Smaller foundries, manual addition |
| Bulk in container | Loose loading | 25–27 MT | Cost-effective, requires hopper/silo |
| Palletized & shrink-wrapped | 1 MT per pallet | 20–25 pallets | Warehousing, just-in-time delivery |
Shipping Documents Included:
📑 Commercial Invoice & Packing List
📑 Bill of Lading (Ocean / Air)
📑 Certificate of Origin (optional, for tariff preferences)
📑 Certificate of Analysis (batch-specific)
📑 Material Safety Data Sheet (MSDS)
📑 Packing photos before container sealing (upon request)
Lead Time:
Standard grades (553, 441): 10–15 days after deposit
Premium grades (3303, 2202): 15–20 days after deposit
Custom sizing / low-Ca specials: 20–25 days
Ports of Loading: Tianjin, Qingdao, Shanghai, Lianyungang (China)
Why Choose Our Silicon Metal 3303?
When you source Silicon Metal 3303 from us, you gain more than just a raw material-you gain a reliable partner committed to quality and service.
Our Advantages:
🏭 Direct from producer – No middlemen, better pricing, and full traceability
🔬 Stringent quality control – Every batch tested; typical Ca levels below 0.02% (not just 0.03%)
📦 Flexible packaging – Jumbo bags, small bags, or bulk to match your handling system
🌍 Global export experience – Reliable shipping to North America, Europe, Southeast Asia, Middle East, and South America
💬 Technical support – Our metallurgists help you select the right grade and particle size for your process
Customer Testimonial (paraphrased):
"We switched to this supplier for our 3303 grade after inconsistent calcium levels from our previous source. Their typical Ca of 0.015% has reduced dross in our aluminum foundry by 30%. COA accompanies every container. Highly recommended." – Purchasing Manager, European aluminum wheel manufacturer
📞 Ready to Order Silicon Metal 3303?
Request your quote today. We respond within 24 hours with pricing, COA, and shipping options.
Email: goldenltd.silicon03@gmail.com
Web form: www.hngoldenltd.com
WhatsApp/WeChat: +8617537269699
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