Premium Silicon Metal 3303/1101 | High Purity Si Flakes & Granules for Alloy Steel, Chemical & Renewable Energy | 553/441
Premium Silicon Metal 3303 and 1101 is an industrial-grade silicon material engineered for applications that require precise impurity control, stable silicon content, and reliable physical form. Produced using controlled smelting and grading processes, this silicon metal is supplied in flakes and granules, making it suitable for both rapid reaction systems and controlled alloying operations.
With high purity silicon content and standardized 553 and 441 size ranges, this product is widely applied in alloy steel production, chemical synthesis, and renewable energy material processing.
Grade Definition & Purity Control
Silicon Metal 3303 and 1101 differ primarily in impurity thresholds and end-use focus. Both grades are manufactured with consistent quality to meet international industrial requirements.
| Grade |
Si |
Fe |
Al |
Ca |
| Silicon Metal 3303 |
≥99.3 |
≤0.30 |
≤0.30 |
≤0.03 |
| Silicon Metal 1101 |
≥99.8-99.9 |
≤0.10 |
≤0.10 |
≤0.01 |
Impurity levels and silicon purity can be adjusted for specific industrial or downstream processing needs.
Forms, Sizes & Particle Distribution
Physical Forms
- Silicon flakes - uniform thickness, fast melting, controlled reaction
- Silicon granules - reduced dust, stable feeding, improved handling
Standard Size Ranges
- 553 specification: coarse particles (commonly 10-100 mm)
- 441 specification: medium particles (commonly 10-50 mm)
These size options allow operators to balance reaction speed, oxidation loss, and furnace efficiency across different production environments.
Material Properties
- Appearance: Metallic silver-gray crystalline silicon
- Structure: Hard, brittle crystalline solid
- Melting point: ~1414 °C
- Density: ~2.33 g/cm³
- Excellent thermal and electrical conductivity
Such characteristics make silicon metal suitable for both metallurgical reactions and advanced material processing.
Application Fields
Alloy Steel Manufacturing
Silicon metal is widely used as a deoxidizing and alloy-adjusting material:
- Improves steel cleanliness and internal quality
- Enhances strength and oxidation resistance
- Supports stable alloy composition
Grade 3303 is commonly selected for alloy and structural steel applications.
Chemical Industry
High-purity silicon metal plays a critical role in:
- Silicone rubber and silicone oil production
- Organosilicon intermediates
- Special chemical synthesis processes
Grade 1101 is preferred where low metallic impurities are essential for reaction stability and product yield.
Renewable Energy & Advanced Materials
Silicon Metal 1101 is used as a raw material for:
- Polysilicon manufacturing
- Photovoltaic and solar energy materials
- Renewable energy-related silicon processing
High purity supports conversion efficiency and material consistency.
Manufacturing Process & Quality Assurance
Premium silicon metal is produced using submerged arc furnace technology, followed by controlled crushing, screening, and classification. Quality assurance focuses on traceability and repeatability, including:
- Raw material selection and batch control
- In-process chemical analysis
- Final inspection before packaging
- Optional independent third-party testing
Each batch is documented to ensure technical transparency and industrial reliability, aligning with EEAT trust signals.
Packaging & Handling
- Bulk bags suitable for industrial loading
- Palletized small bags for controlled dosing
- Moisture-resistant export packaging
- Suitable for long-distance sea transportation
Proper packaging minimizes contamination and preserves material integrity during shipment.
Frequently Asked Questions
What is the main difference between Silicon Metal 3303 and 1101?
3303 is optimized for metallurgical efficiency and cost balance, while 1101 offers higher purity for chemical and renewable energy applications.
Are flakes better than granules?
Flakes provide faster melting and reaction speed, while granules offer better flowability and lower dust generation. Selection depends on process requirements.
Which size is recommended for large furnaces?
553 size silicon metal is commonly used in medium to large furnaces due to its lower oxidation loss.
Can specifications be customized?
Yes. Particle size distribution and chemical limits can be adjusted to match specific industrial processes.
Conclusion
Premium Silicon Metal 3303 / 1101 offers a reliable balance of high purity, controlled form, and consistent performance for alloy steel, chemical manufacturing, and renewable energy industries. With standardized size options and strict quality control, it supports efficient processing and long-term industrial stability.
