Silicon Metal 3303 Metallurgical Grade

Produced from high-purity quartz through precisely controlled smelting in submerged arc furnaces, our Silicon Metal 3303 guarantees a high silicon content of Si ≥ 99%. It strictly conforms to the 3303 impurity standard (Fe ≤ 0.3%, Al ≤ 0.3%, Ca ≤ 0.03%), making it a superior alloying additive and chemical feedstock.

Core Industry Applications & Benefits:

• Aluminum Alloy Manufacturing: Acts as a vital additive for aluminum foundries. It significantly improves the tensile strength, casting fluidity, and corrosion resistance of aluminum alloys used in automotive and structural parts.
• Silicon-Based Chemicals: Serves as a primary, stable raw material for producing high-value silicone polymers, siloxanes, resins, sealants, and surfactants.
• Advanced Metallurgy: Provides highly efficient deoxidation and high-temperature casting performance in specialized metallurgical processes.
• Semiconductor & Solar: An excellent non-electronic grade feedstock for polycrystalline silicon manufacturing.

Main Applications

1. Aluminum Alloy Production

- Enhances tensile strength and solidification behavior
- Used in automotive parts, aerospace components, and extruded alloys

2. Silicone & Chemical Manufacturing

- Feedstock for polysiloxanes, silicone oils, elastomers, and sealants
- Supports high-purity chemical reactions

3. Metallurgical Deoxidation

- Removes oxygen from molten steel
- Produces cleaner steel with fewer inclusions

4. Foundry & High-Temperature Processing

- Used in cast irons to enhance wear resistance
- Stable in high-heat metallurgical environments

Why Choose Silicon Metal 3303 Metallurgical Grade?

✔ Reliable supply with consistent chemical composition
✔ Ideal for aluminum and chemical industries requiring stable impurity levels
✔ Enhances alloy quality, mechanical performance, and corrosion resistance
✔ Produced under strict quality standards to ensure batch stability
✔ Custom particle size options for different furnace systems
✔ Trusted by global manufacturers in metallurgy and silicone chemistry

Manufacturing Process

- Selection of high-purity quartz and carbon reductants
- Smelting in submerged arc furnaces under controlled conditions
- Purification and slag removal to achieve target impurity levels
- Crushing, screening, and grading to required lump sizes
- Comprehensive chemical testing before packaging
- Export-grade packaging for long-distance transport

Packaging & Logistics

- 1-ton jumbo bags
- 25–50 kg small bags upon request
- Moisture-proof wrapping for marine shipments
- Global delivery via sea, railway, and air freight
- Lead time: 7–10 working days

Q1: What is Silicon Metal 3303 mainly used for?
Aluminum alloys, silicone chemicals, and metallurgical deoxidation.

Q2: Does 3303 differ from 441 or 553 grades?
Yes, 3303 has lower Fe and Al, making it suitable for higher-quality alloys and chemicals.

Q3: Can the particle size be customized?
Yes-custom sizes are available for specialized furnace requirements.

Q4: Is Silicon Metal 3303 suitable for chemical-grade silicone production?
Yes, its purity and impurity control support consistent chemical reaction performance.

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