Products
Silicon Metal 441 For Aluminum Ingot
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Shape: Lump Powder Particles
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Chemical Composition:Si Fe Al Ca P
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Size:0~1mm 1~3mm 10mm~50mm 10~60mm 10~100mm .etc
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Package: Ton bag or customized according to customer requirements
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Product Introduction
Silicon Metal 441 (grade Si4410) is a high-purity silicon-based alloy primarily used in aluminum alloy production, particularly as a key additive in aluminum ingot casting. The designation "441" defines strict impurity limits: Si ≥99%, Fe ≤0.4%, Al ≤0.4%, Ca ≤0.1%.
With ultra‑low calcium and iron content, it effectively improves melt fluidity, reduces casting defects, enhances mechanical properties, and ensures stable quality of aluminum ingots, profiles, and die‑casting parts. It is the preferred silicon additive for mid‑to‑high‑end aluminum alloys.
chemical composition
|
Grade |
Chemical composition |
553 |
441 |
421 |
3303 |
2503 |
2202 |
|
Si ≥ |
98.5% |
99% |
99% |
99% |
99% |
99% |
|
|
Fe ≤ |
0.5% |
0.4% |
0.4% |
0.3% |
0.2% |
0.2% |
|
|
Al ≤ |
0.5% |
0.4% |
0.2% |
0.3% |
0.5% |
0.2% |
|
|
Ca ≤ |
0.3% |
0.1% |
0.1% |
0.03% |
0.03% |
0.02% |
|
|
size |
40-120 mesh,45-325 mesh, -200 mesh, -325 mesh.etc |
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Note: All grades of silicon metal from our company can be used for processing, and the size can also be processed according to your requirements. |
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Package |
25 kg/bag or 1 ton/bag |
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Lump: 10–50mm, 10–100mm
Granule: 1–3mm, 3–10mm
Powder: 0–1mm, 100–200 mesh
Packaging: ton bag, moisture‑proof film, woven bag, palletized
Storage: dry, ventilated, avoid rain & moisture
Functions in Aluminum Ingot Production
1) Improve Mechanical Properties
Forms Al‑Si solid solution, refines grain structure
Increases tensile strength by 20–30%, hardness by 15–20%
Enhances wear resistance for engine parts, wheels, structural components
2) Optimize Casting Process
Lowers melting point, improves melt fluidity, reduces porosity & shrinkage
Reduces thermal expansion coefficient, lowers hot cracking risk
Improves castability of complex & thin‑wall parts
3) Enhance Process Stability
Reduces slag and inclusions, improves yield
Compatible with strontium / sodium modification systems
Ensures consistent performance of aluminum ingots & downstream products
FAQ
Q: What does "441" mean in Silicon Metal 441?
A: It stands for Si≥99%, Fe≤0.4%, Al≤0.4%, Ca≤0.1%.
Q: Why use 441 for aluminum ingots instead of 553?
A: 441 has lower Ca & Fe, less slag, better surface & ductility, ideal for quality‑sensitive alloys.
Q: Can you customize sizes?
A: Yes, lump, granule, powder available per furnace needs.
Q: Delivery time?
A: Normally 7–15 days for standard orders.
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