Silicon Metal (Si Metal), also known as industrial silicon or crystalline silicon, is a high-purity elemental material with a bright metallic luster despite being classified as a non-metal. It features a high melting point, excellent thermal stability, high electrical resistivity, and outstanding oxidation resistance. As a leading silicon metal supplier, Hongshun provides various grades of Si metal, including Silicon Metal 553, 441, 1101, 2202, and 3303, to meet the specific needs of global customers across metallurgy, electronics, and chemical industries.
Silicon metal composition
| Grade | Si (%) | Fe(%) | Al(%) | Ca(%) |
| 1101 | 99.79 | 0.1 | 0.1 | 0.01 |
| 2202 | 99.58 | 0.2 | 0.2 | 0.02 |
| 2502 | 99.48 | 0.25 | 0.25 | 0.02 |
| 3303 | 99.37 | 0.3 | 0.3 | 0.03 |
| 411 | 99.4 | 0.4 | 0.1 | 0.1 |
| 421 | 99.3 | 0.4 | 0.2 | 0.1 |
| 441 | 99.1 | 0.4 | 0.4 | 0.1 |
| 551 | 98.9 | 0.5 | 0.5 | 0.1 |
| 553 | 98.7 | 0.5 | 0.5 | 0.3 |
| 97 | 97 | 1.5 |
*Other chemical compositions and sizes can be supplied upon request.
Applications of Silicon Metal
1. Metallurgy & Alloy Additives
Hongshun’s silicon metal powder is extensively used as a critical additive in the non-ferrous alloy and steelmaking industries. When added to molten steel or cast iron, it acts as an alloying element and deoxidizer, improving hardenability, strength, and performance in final metal products. It's a standard component in the production of silicon steel, aluminum-silicon alloys, and magnesium alloys.
2. Reducing Agent for Specialty Metals and Ceramics
In the production of advanced metal alloys and new ceramic materials, Hongshun industrial silicon serves as a strong reducing agent, facilitating the extraction and refinement of metals such as magnesium and rare alloys. This makes it indispensable in powder metallurgy and ceramic composite development.
3. Refractory Materials & Kiln Components
Silicon metal granules are also used in manufacturing refractory products, such as kiln linings and kiln furniture, due to their excellent resistance to high temperatures, oxidation, and thermal shock. This application is essential in steel mills, cement plants, and high-temperature industrial processing environments.
4. Electronics & Semiconductor Industry
After purification, Hongshun’s Si metal is the primary raw material for producing mono-crystalline silicon, which is foundational in manufacturing semiconductors, integrated circuits, and microelectronic components. It is an essential material in the modern electronics and information technology industries.
5. Solar Photovoltaics (PV)
High-purity silicon metal 441 is a key material in producing solar-grade silicon, which is then used to create solar photovoltaic (PV) cells. These cells power solar panels, supporting the global shift toward renewable energy and green technology.
6. Silicon in Aluminum Alloys
Hongshun’s Si metal enhances the performance of aluminum alloys by improving casting characteristics, increasing hardness and mechanical strength, and reducing overall weight. These enhanced aluminum alloys are widely used in aerospace, construction, and automotive applications.
7. Automotive Lightweight Solutions
As the automotive industry shifts towards lightweight vehicles, silicon metal is increasingly used to replace traditional heavy materials. It plays a key role in producing engine blocks, wheel hubs, brake components, and structural castings made from aluminum-silicon alloys, helping to boost fuel efficiency and reduce emissions.
As the top of the silicon-based new material industry chain, silicon metal is an important raw material required for the development of aluminum alloys, organic silicon, and photovoltaic industries. With the rapid development of the global manufacturing industry, the downstream demand for silicon metal has steadily increased, promoting continuous growth in production capacity and output.
About Hongshun Silicon Metal
Hongshun specializes in the research, development, production, and sales of silicon metal, silicon metal powder (industrial silicon powder), and deep-processed silicon products. As an experienced producer, Hongshun offers stable quality and reliable supply for various industrial needs.
Our Main Products Include:
Silicon Metal Grades: 1101, 2202, 2502, 3303, 411, 441, 551, etc.
Industrial Silicon Powder: 100 mesh, 200 mesh, 325 mesh
Production Process of Silicon Metal
Hongshun Silicon Metal is produced through the carbothermic reduction method. High-purity silica (quartz) and reducing agents such as charcoal, petroleum coke, wood chips, and low-ash coal are smelted in a high-temperature electric furnace. Under extreme heat, silica reacts with the reducing agents to produce silicon metal.
Raw Material: Silica (SiO₂)
Reducing Agents: Charcoal, petroleum coke, wood chips, low-ash coal
Melting Equipment: High-temperature electric furnace
The standard-grade silicon metal produced through this process has a purity of about 97%–98% and is primarily used in the metallurgical industry. With advanced refining technologies, Hongshun is capable of producing high-purity silicon metal with 99.7%–99.8% purity, meeting the requirements of semiconductors, solar photovoltaics, and other high-tech industries.
Why Choose Silicon Metal Producer Hongshun?
1. Stable Supply with Factory Direct Source
As a silicon metal manufacturer, Hongshun offers direct factory supply, ensuring stable quality, reliable inventory, and fast delivery.
2. Wide Product Range and Customization
We provide various grades such as silicon metal 553, 441, 3303, 2202, and ultra-fine silicon powder (100, 200, 325 mesh) tailored to your needs.
3. Strict Quality Control & Consistency
Each batch undergoes rigorous quality inspection to guarantee high purity, consistent chemical composition, and excellent performance.
4. Professional Export Experience
With rich international trade experience, Hongshun ensures smooth customs clearance, professional packaging, and on-time shipping worldwide.
