High-Purity Aluminum for Deoxidation
Al 99.5%
99.5% aluminum for deoxidation processes requiring higher purity than Al 95%.
≥99.50% Aluminum
≤0.40% Iron (Fe)
Alta / High Purity
Al 99.5% (equivalent to 1050/1050A) is used when steel processes require higher purity in deoxidation, minimizing the incorporation of silicon, iron, and other traces into the steel. Manufactured in donuts and pieces for direct feeding into liquid steel.
International Nomenclature
| Standard | Designation |
|---|---|
| AA (USA) | 1050 / 1050A |
| EN (Europa) | EN AW-1050A · Al99.5 |
| DIN (Alemania) | Al99.5 / 3.0255 |
| Comercial | Al 99.5 / Al995 |
Chemical Composition
| Element | Symbol | Percentage |
|---|---|---|
| Aluminum | Al | ≥99.50% |
| Iron | Fe | ≤0.40% |
| Silicon | Si | ≤0.25% |
| Copper | Cu | ≤0.05% |
| Manganese | Mn | ≤0.05% |
| Zinc | Zn | ≤0.05% |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.71 g/cm³ |
| Melting Point | ~658 °C |
| Electrical Conductivity | ~60% IACS |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 65–95 MPa |
| Elongation | 30–45% |
Key Characteristics
- Higher purity than Al 95% for processes demanding fewer traces in steel
- Low Si and Fe content minimizes impurities in the final steel
- Available in donuts and pieces for direct furnace feeding
- Equivalent to grade 1050A (EN AW-1050A)
Industries & Applications
Steel Industry
High-purity deoxidation in special steels, stainless steels, tool steels
Secondary Metallurgy
Refining processes requiring minimal contamination
Special Notes
Al 99.5% is commercialized for steel customers producing special steels where deoxidizer purity is critical. It offers a compromise between Al 95% (more economical) and primary aluminum (higher purity).
Need Al 99.5%?
We manufacture this alloy in ingots, donuts, and bars to your exact specifications.