Silicon Metal 441, also known as Industrial Silicon or Crystalline Silicon, is a critical raw material characterized by its high silicon content and specific controlled levels of Iron, Aluminum, and Calcium. The "441" designation represents its maximum impurity thresholds: 0.4% Iron (Fe), 0.4% Aluminum (Al), and 0.1% Calcium (Ca).

At Aon Metals, our Silicon Metal 441 is produced through the smelting of high-purity quartz and carbonaceous reducing agents in submerged arc electric furnaces, ensuring consistent quality for global industrial standards.

silicon metal

chemical composition

Element	Specification (Max/Min)
Silicon (Si)	99% Min
Iron (Fe)	0.4% Max
Aluminum (Al)	0.4% Max
Calcium (Ca)	0.1% Max

Size Options: 10-50mm, 10-100mm, or custom sizes/powder as per customer request.

Color: Dark gray with a distinct metallic luster.

Key Applications of Silicon Metal 441

1. Aluminum Alloy Manufacturing

Silicon 441 is primarily used as an alloying agent in the aluminum industry. Adding silicon improves the fluidity of molten aluminum, increases wear resistance, and enhances the castability of products used in automotive engines, wheels, and aerospace components.

2. Chemical Industry (Silicone Production)

It serves as the base material for producing silicones (silicon oils, rubbers, and resins). The controlled calcium and aluminum levels in grade 441 are ideal for the synthesis of methyl chlorides and other chemical derivatives.

3. Refractory Materials

Due to its high melting point and oxidation resistance, Silicon Metal 441 is frequently used in the production of refractory bricks and advanced ceramic materials.

Metal Silicon 441

Packaging & Shipping

Packaging: 1,000kg (1MT) waterproof jumbo bags.

Inspection: Third-party inspection (SGS/CCIC) available upon request to verify chemical analysis and sizing.

Delivery: Prompt shipment to major global ports.

Why Choose Aon Metals for Silicon 441?

High Purity Control: We utilize advanced smelting technology to ensure that impurities never exceed the 441 threshold.

Customized Sizing: Whether you need large lumps for furnace charging or fine powder for chemical reactions, we provide precision grading.

Reliable Logistics: Based on our strategic location, we offer efficient export services with secure packaging (1MT big bags) to ensure zero contamination during transit.

silicon metal production factory