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Silicon Metal Si 441

Silicon Metal Si 441

Silicon Metal 441 (Si 441) is a premium-grade metallurgical silicon with a minimum purity of 99.0% silicon (Si) and tightly controlled impurity levels (Fe Less than or equal to 0.4%, Al Less than or equal to 0.4%, Ca Less than or equal to 0.1%).It is widely used in high-performance applications such as aluminum alloys, silicones, polysilicon for solar cells, and specialty chemicals.Compared to standard grades like Si 553, Si 441 offers higher purity and better consistency, making it ideal for industries requiring strict impurity control.
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Key Specifications (ISO 9001 / GB/T 2881-2014)

 
Greater than or equal to 99.0
Less than or equal to 0.4
Less than or equal to 0.4
Less than or equal to 0.1
Less than or equal to 0.1 (combined)

 

Form: Silver-gray crystalline lumps (standard sizes: 10–100mm, or customized)

Packaging: 1-ton jumbo bags, 25kg bags, or bulk shipment

Density: ~2.33 g/cm³

Melting Point: ~1,410 degree

silicon metal

 

(1) Aluminum Alloys (Foundry & Automotive)

Enhances strength, castability, and corrosion resistance in aluminum-silicon (Al-Si) alloys.

(2) Silicones & Chemical Industry

Preferred for high-purity chemical synthesis due to low impurity content.

(3) Solar & Semiconductor Industry

Further refined into polysilicon for photovoltaic (PV) solar cells and electronic-grade silicon.

(4) Refractories & Advanced Materials

Used in high-temperature ceramics and refractory materials for steelmaking and furnaces.

silicon metal

Advantages of Si 441

 

 Higher Purity – Lower Fe, Al, and Ca content compared to Si 553, ensuring better performance in sensitive applications.


 Cost-Effective – Balances purity and price, making it a preferred choice for mid-to-high-end applications.

 

Energy costs (electricity-intensive production)

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