As a leading ferroalloy manufacturer and exporter, Beifang Alloy supplies high-quality silicon metal grades, including the widely used 553 and 441. Understanding the differences between these two grades is essential for making the right purchasing decision.
| Grade | Si Content (%) | Fe (%) | Al (%) | Ca (%) | Typical Use |
|---|---|---|---|---|---|
| 553 | ≥98.5 | ≤0.5 | ≤0.5 | ≤0.3 | Aluminum alloys, silicone, metallurgy |
| 441 | ≥99.0 | ≤0.4 | ≤0.4 | ≤0.1 | Chemical-grade silicone, electronics |
Key Differences:
553 is economical and widely used in aluminum alloy and metallurgical applications.
441 has lower impurity levels, making it more suitable for chemical processing and high-purity silicone production.
When choosing between 553 and 441:
Opt for 553 if cost-efficiency is your primary concern and your application doesn’t require ultra-low impurity levels.
Choose 441 for applications where higher silicon purity and lower metallic contaminants (like Ca and Fe) are critical.
At Beifang Alloy, we supply both grades in various sizes (10-100mm, 0-3mm powder, etc.) with customized packaging and global shipping.
The global demand for silicon metal continues to rise due to the growth in:
Automotive aluminum alloys
Solar photovoltaics
Silicone-based chemicals and electronics
Markets like India, Southeast Asia, and the Middle East show high demand for 553-grade, while 441-grade sees increased usage in Japan, South Korea, and Europe where chemical-grade applications dominate.
How to Select the Right Grade:
Define your application: Aluminum? Silicone? Electronics?
Check impurity tolerance: Lower Ca and Al = Better for chemical applications.
Budget planning: 553 is more cost-effective; 441 is higher in purity and price.
Supplier credibility: Ensure testing reports and consistency.
Beifang Alloy offers material certification, sample evaluation, and long-term supply contracts tailored to your production schedule.
| Factor | Beifang Alloy | Other Suppliers |
|---|---|---|
| Factory Direct Supply | ✅ Yes | ❌ Not always |
| In-House QC Lab | ✅ 100% Batch Testing | ❌ Limited testing |
| Export Experience | ✅ 70+ Countries | ❌ May lack export focus |
| Custom Grades/Sizes | ✅ Supported | ❌ Limited flexibility |
| Response Time | ✅ Fast (within 24h) | ❌ Delayed responses |
Located in Anyang, China, Beifang Alloy is a trusted ferroalloy factory offering:
Silicon Metal 553, 441, 421, 3303
Ferro Silicon, Silicon Manganese, Silicon Calcium, High Carbon Silicon
Customized solutions for steelmaking, aluminum casting, chemical processing
📩 Contact us today for a free consultation and competitive quote:
🌐 Website: www.beifangalloy.com
📧 Email: info@hnxyie.com
