​​1. Composition & Key Differences

​​Ferro Silicon 75 (FeSi75)​​

• ​​Silicon Content​​: 75% minimum, with iron as the primary alloying element.
• ​​Impurities​​: Controlled levels of aluminum (≤1.5%), calcium (≤1.0%), carbon (≤0.2%), and phosphorus (≤0.04%) .
• ​​Physical Properties​​: High brittleness due to silicon-rich composition, optimized for thermal stability and wear resistance .

​​Silicon Metal 3303​​

• ​​Silicon Content​​: ≥99.3%, making it ultra-high-purity silicon.
• ​​Impurities​​: Minimal iron (≤0.3%), aluminum (≤0.3%), and calcium (≤0.03%) .
• ​​Physical Properties​​: Metallic gray luster, high melting point, and excellent electrical conductivity .

Contrast​​:

• FeSi75 is an ​​alloy​​ designed for metallurgical applications, while Silicon Metal 3303 is a ​​pure elemental silicon​​ used in chemical and electronic industries.

​​2. Applications​​

​​Ferro Silicon 75​​

• ​​Steelmaking​​: Acts as a deoxidizer and alloying agent to enhance strength and hardness in low-alloy steels and cast irons .
• ​​Foundry Work​​: Promotes graphite nodulization in ductile iron, improving mechanical properties .
• ​​Heat-Resistant Alloys​​: Used in manufacturing bearings, gears, and cutting tools due to its wear resistance .

​​Silicon Metal 3303​​

• ​​Chemical Industry​​: Produces silicones, resins, and lubricants .
• ​​Electronics​​: Essential for semiconductors, solar cells, and high-purity alloys .
• ​​Refractory Materials​​: Enhances thermal stability in high-temperature environments .

Considerations for Selection​​

• ​​Application Requirements​​:
  • ​​FeSi75​​: Ideal for metallurgical processes requiring deoxidation and alloying.
  • ​​Silicon Metal 3303​​: Best for high-purity applications in electronics or chemicals.
• ​​Certifications​​: ZhenAn’s BV/SGS-certified products ensure compliance with global standards .
• ​​Cost Efficiency​​: FeSi75 offers cost-effective solutions for bulk industrial needs, while Silicon Metal 3303 commands premium pricing for specialized markets.

Why Choose ZhenAn?​​

ZhenAn distinguishes itself with ​​six core advantages​​:

1. ​​Direct Factory Supply​​: Eliminate middlemen for competitive pricing, free samples, and instant access to technical manuals .
2. ​​Bulk Inventory​​: Immediate delivery and customization for urgent orders.
3. ​​Rigorous Testing​​: Six quality checks per batch to ensure consistency.
4. ​​Secure Packaging​​: Waterproof materials to prevent contamination.
5. ​​Dedicated Support​​: Personalized order tracking and 24/7 after-sales service.
6. ​​Global Logistics​​: Efficient shipping and compliance with international standards .