Silicon metal 421
Silicon metal 421 Silicon metal is a high-purity industrial material produced by smelting quartz and coke in electric arc furnaces. Known for its high melting point, excellent conductivity, and oxidation resistance, it is widely used as an alloy additive to improve steel hardenability, as the basic raw material for silicones and organosilicon compounds, and-after further purification-as monocrystalline silicon for semiconductors and solar cells. It also finds application in refractories and high-temperature materials, making it indispensable to modern industry.
Products Grade
Grade 2202: Highest purity, lowest impurity levels. Used in high-end chemical products (e.g., silicon monomers, polycrystalline silicon for solar/electronics), precision alloys, and photovoltaic materials.
Grade 3303: Extremely low calcium content with excellent overall impurity balance. Ideal for high-quality aluminum alloys, silicon steel sheets, organic silicon production, and applications sensitive to calcium.
Grade 421: Lower aluminum content than 441, with superior impurity balance. Suitable for chemical-grade applications, organic silicon production, and alloys requiring strict impurity control.
Grade 441: Significantly lower Fe/Al ratio and calcium content compared to 553. Suitable for aluminum alloys in automotive and aerospace sectors, where iron and calcium must be controlled to prevent brittleness.
Grade 553: Highest impurity levels, lowest cost. Primarily used for deoxidation in steelmaking, ordinary aluminum alloys, and basic metallurgical applications.
Products Size
Size: 10-50mm,10-100mmetc.
The specifications and size can according to customer's requirement.
Product Applications
Silicon metal 421 is an indispensable core material in modern metallurgy-Silicon metal serves as a highly efficient composite deoxidizer in steelmaking, Silicon metal is the key alloying element in silicon steel and spring steel, while Silicon metal is also the primary raw material for producing ferrosilicon, aluminum-silicon alloys, and metallic magnesium.
Products Advantages
Silicon Metal 421 Advantages：
High Purity & Stability: Purity up to 99%+, minimal impurities for consistent downstream performance.
Excellent Deoxidation: Rapidly removes oxygen in steelmaking, improving melt cleanliness and reducing inclusions.
Enhances Alloy Properties: Improves fluidity, castability, strength, hardness, and corrosion resistance in aluminum alloys.
Superior Thermal Stability: High melting point and heat resistance, ideal for demanding industrial applications.
Cost-Effective: Reduces overall production costs while boosting product competitiveness.
Flexible Specifications: Various sizes and grades to meet diverse process requirements.
Product Packing
1. 1MT big bags.
2. 25KG small bags into 1MT big bags.
3. Iron drums.
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