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Zhen an Metallurgy
Silicon Metal 551
Silicon Metal 551 is a high purity metallurgical grade silicon alloy used in a wide range of applications, particularly in the aluminum and steel industries
Silicon Metal 551 is a cost-effective and widely used silicon material. Its high purity and low impurity characteristics make it play an important role in many industrial fields.
Looking for a reliable, high-quality source of Silicon Metal 551? We deliver top-grade industrial silicon directly from our ISO-certified factory to your facility — with full customization, testing reports, and international logistics support.
Why Choose Our Silicon Metal 551?
✔ Consistent Chemical Composition
Si ≥ 98.5%, Fe ≤ 0.5%, Al ≤ 0.5%, Ca ≤ 0.1%
Tight impurity control for optimal performance in alloying and chemical processing.
✔ Perfect for Key Industries
Aluminum Foundries – improves castability, strength, and thermal resistance.
Silicone Manufacturers – base material for silicone rubber, oils, and sealants.
Steel & Metallurgy – acts as a strong deoxidizer and alloy additive.
Polysilicon Refiners – raw material for further purification into solar-grade silicon.
✔ Superior Quality Control
Every batch is tested with ICP-OES spectrometers, X-ray fluorescence analyzers, and carbon/sulfur testers. We provide third-party reports (SGS, BV) on request.
Factory Highlights
📌 Location: China-based, with over 30 years of production experience
⚙️ Equipment: Advanced submerged arc furnaces & automated crushing lines
📦 Capacity: Over 3,000 MT/month, ready for bulk or small orders
🛡 Certifications: ISO 9001, REACH, SGS/BV-tested materials
🌍 Clients in 30+ countries – including Europe, Southeast Asia, South America, and the Middle East
We handle custom sizing (10–100 mm, or powder on request) and offer OEM/ODM packaging.
Benefits for Your Business
🕒 Fast Lead Time – Short delivery windows, large in-stock inventory
🔍 Transparent QC – Every order traceable from furnace to shipment
💬 Dedicated Support – Multilingual sales & technical team, 24/7 assistance
💸 Flexible Pricing – Bulk discounts, EXW/FOB/CFR/CIF terms available
Product Specs Snapshot
| Element | Content (%) |
| Silicon (Si) | ≥ 98.5 |
| Iron (Fe) | ≤ 0.5 |
| Aluminum (Al) | ≤ 0.5 |
| Calcium (Ca) | ≤ 0.1 |
| Other Impurities | ≤ 0.3 |
Size 10–100 mm (or as required)
Packing 1MT jumbo bags, moisture-proof liner
Third-Party Testing | Custom Samples | Full Documentation
We support every shipment with the following:
✔ Certificate of Analysis (COA)
✔ Material Safety Data Sheet (MSDS)
✔ Customs HS Code Assistance
✔ Export Certificates (Fumigation, Origin, etc.)
Need a sample for quality confirmation? We’ll ship one within 48 hours.
Silicon Metal 551 Key Features
✅ High Silicon Purity: Enhances the strength, corrosion resistance, and thermal stability of final products.
✅ Low Impurity Levels: Ensures stable chemical behavior, suitable for sensitive applications such as silicones and microelectronics.
✅ Excellent Thermal Conductivity: Enables use in heat-resistant and heat-dissipating materials.
✅ Stable High-Temperature Performance: Maintains integrity under extreme thermal conditions.
✅ Versatility: Compatible with various alloying and chemical systems.
Applications of Silicon Metal 551
- Aluminum Alloy Industry
Silicon is a key alloying element in the production of Al-Si alloys, which are widely used in the automotive and aerospace industries. Silicon Metal 551 enhances the strength, wear resistance, and fluidity of aluminum alloys during casting. - Silicone Chemical Industry
Used as a base material in the production of silicone rubber, silicone oil, silicone sealants, and resins. It is first transformed into chlorosilanes or siloxanes through chemical synthesis. - Electronics and Semiconductors
Although not suitable for semiconductor-grade applications directly, Silicon Metal 551 can be further refined into polysilicon, a precursor for solar-grade and electronic-grade silicon. - Metallurgical Applications
Used as a deoxidizer and alloy additive in steelmaking and cast iron foundries, where it improves product structure and performance. - Chemical Reagents & Refractories
Can be used in the synthesis of silicon-based chemicals and as a component in refractory materials due to its high melting point and chemical resistance.
We strictly control the quality of metallic silicon
🔍 Silicon Content: Should meet or exceed ≥98.5%. Higher purity = higher reactivity and performance.
🔍 Low Levels of Fe, Al, Ca: Excessive impurities can cause chemical instability or weaken final alloy properties.
🔍 Particle Uniformity: Consistent particle size leads to uniform melting and efficient processing.
🔍 Visual Inspection: A shiny, metallic luster with minimal oxidation or contamination indicates good quality.
🔍 Independent Lab Testing: Certificates from SGS, BV, or ISO-certified labs provide objective validation.
Let us be your trusted Silicon Metal partner, not just a supplier.
We guarantee quality, consistency, and professional service at every step.
Why choose Zhen An Metallurgy as your long-term partner?
30 years of production and sales experience:
Zhenan Metallurgy is located in Anyang City, Henan Province, China. It has 30 years of production experience and can produce high-quality metal silicon according to user requirements.
Customized according to customer needs:
Zhenan Metallurgy has its own metallurgical experts, and the chemical composition, particle size and packaging of silicon metal can be customized according to customer requirements.
Worry-free delivery:
The annual output of Zhen’an metallurgical silicon metal is 1.5 million tons, and the spot inventory is 200,000 tons. The supply is stable and the delivery is timely.
Free Samples:
Zhenan Metallurgical will give you the greatest support, and provide free metal silicon samples.
Support third-party testing:
Zhenan Metallurgical has a strict quality control system. Metal silicon has been inspected more than 3 times before leaving the factory. At the same time, we accept third-party inspections such as SGS and BV to provide you with the greatest guarantee.
Manufacturer’s strength display:
Our factory covers an area of 30,000 square meters, with a full set of modern production equipment, two large-scale production bases such as hydrometallurgy, two key laboratories and a metallurgical material testing center with 16 senior researchers.
30000(m2)
Our factory covering an area of 30,000 square meters
1500000(Ton)
Annual production and sales more than 1,500,000 tons.
Professional team to provide you with better service
Zhen An Metallurgy has a high-quality talent team integrating sales, production and R&D, including 16 senior researchers, 28 professional engineers, 35 international sales personnel, 10 senior operation personnel, and more than 300 production technicians.
Zhen An metallurgical certificate display
Our products have been exported to 78 countries, and many regular customers have visited our company and factory and placed multiple orders. After one cooperation, trust has been established with us, and customers will place orders multiple times, and some will introduce new customers to us.
