Silicon Metal 3303 – High-Purity Raw Material For Alloys

Silicon Metal 3303, also known as industrial silicon or crystalline silicon, is a silver-gray, lustrous metallurgical product with a minimum silicon content of 99.3%. Its grade designation "3303" specifies strict limits on key impurities: Iron (Fe) ≤ 0.3%, Aluminum (Al) ≤ 0.3%, and Calcium (Ca) ≤ 0.03%. This high-purity material features a high melting point, excellent heat resistance, high electrical resistivity, and outstanding oxidation resistance. It serves as an indispensable raw material for manufacturing high-performance aluminum alloys, synthesizing silicones and silane coupling agents, producing polysilicon for solar cells, and fabricating advanced refractories. With its balanced composition and consistent quality, 3303-grade silicon metal is the preferred choice for industries demanding precise metallurgical control.

1. Ultra-High Purity with Tight Impurity Control
Every batch of our 3303 is refined from selected quartz and low-ash petroleum coke in submerged arc furnaces. We consistently achieve Si ≥ 99.3%, Fe ≤ 0.3%, Al ≤ 0.3%, and Ca ≤ 0.03%. This level of purity minimizes unwanted reactions in downstream processes, ensuring your final products – whether aluminum wheels, silicone sealants, or refractory bricks – meet the most stringent quality standards. Unlike lower-grade 553 or 441, our 3303 delivers superior performance in critical applications.

2. Customizable Particle Size for Every Process
We understand that different applications demand different physical forms. Our standard offering is 10–100 mm lump form, but we also provide crushed granular sizes (e.g., 3–8 mm, 1–3 mm) and pulverized powder (e.g., 100 mesh, 200 mesh) upon request. This flexibility helps you save on downstream crushing and screening costs, while ensuring consistent melting or dissolution behavior.

3. Third-Party Certified Quality
Every shipment is accompanied by a mill test certificate, and we can arrange independent SGS or BV inspection at your request. Our robust quality management system tracks material from raw ore to finished product, giving you full traceability and peace of mind.

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Q1: What is the exact difference between 3303 and 553 silicon metal?
A1: The primary difference is purity. 3303 has ≥99.3% Si with Fe≤0.3%, Al≤0.3%, Ca≤0.03%, while 553 contains about 98.5% Si with higher impurities (Fe≤0.5%, Al≤0.5%, Ca≤0.3%). 3303 is specified for high‑end alloys, silicones, and electronics, whereas 553 is typically used for general deoxidation or low‑grade castings.

Q2: Do you provide third‑party inspection reports?
A2: Yes. We can arrange SGS, BV, or any other accredited inspection agency at your cost. Our standard shipment includes our own mill certificate, but we fully support independent verification before loading.

Q3: How do you prevent moisture ingress during ocean transport?
A3: Our jumbo bags are equipped with PE inner liners that are heat‑sealed to prevent moisture penetration. Additionally, we can place desiccants inside the container upon request. We also recommend that containers be stowed under cover during loading and that customers inspect the container condition before stuffing.

Q4: Is there a shelf‑life or storage recommendation for silicon metal?
A4: Silicon metal is chemically stable and does not have a fixed shelf‑life if stored properly. Keep it in a dry, well‑ventilated warehouse, away from moisture and acidic fumes. Avoid direct contact with water to prevent hydrogen generation. We recommend using the material within 12 months for best handling characteristics.

Q5: What happens if the quality does not meet the agreed specification?
A5: We take quality very seriously. In the unlikely event of a dispute, we will arrange a re‑inspection by an independent third party (e.g., SGS) using retained samples. If the material is found to be non‑conforming, we will replace the batch or issue a refund, as mutually agreed.

Q6: Do you have experience exporting to Europe / North America / Southeast Asia?
A6: Yes, we have exported to over 30 countries across Europe, the Americas, Southeast Asia, and the Middle East. We are familiar with regional import regulations, documentation requirements, and preferred packaging practices. Our team can assist with customs clearance and local logistics coordination if needed.

Q7: Is it possible to combine different sizes or grades in one container?
A7: Yes, we can consolidate multiple sizes or even different grades in a single container, provided they are properly segregated and labelled. This is a common practice to save on freight costs.

Whether you run an aluminium foundry, a silicone plant, a refractory factory, or a polysilicon production line, our Silicon Metal 3303 offers the purity, consistency, and flexibility you need to stay competitive in today's global market. We have built a solid reputation for reliable quality, transparent communication, and on‑time delivery.

Take the next step:

Request a free sample (subject to qualification) – test our product in your own process.

Get a competitive price – based on your volume, size, and packaging preferences.

Discuss custom logistics – we can arrange door‑to‑door shipping, consolidation, or just‑in‑time delivery.

📧 Email: sales@zanewmetal.com
📞 Phone : +86‑155-1882-4805

We look forward to building a long‑term partnership with you!

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