EN AW-1050A
3.0255Commercially pure aluminum (99.5% Al minimum). Excellent corrosion resistance, highest thermal and electrical conductivity among Al alloys, and outstanding formability. Low strength (UTS ~100 MPa annealed) limits structural use. Non-heat-treatable — strengthened only by cold work (H14/H24 tempers). Used for chemical processing equipment, food packaging foil, reflectors, heat exchangers, electrical busbars, capacitor foils, and architectural cladding/roofing. The baseline aluminum for conductivity applications.
Chemical composition comparison (wt%)
Side-by-side: EN AW-1050A (EN) (EN 573-3) vs ASTM
| Element | EN AW-1050A (EN) | ASTM | Overlap |
|---|---|---|---|
| Si | ≤ 0.25% | — | — |
| Mn | ≤ 0.05% | — | — |
| Cu | ≤ 0.05% | — | — |
| Al | ≥ 99.5% | — | — |
| Ti | ≤ 0.05% | — | — |
| Fe | ≤ 0.4% | — | — |
| Mg | ≤ 0.05% | — | — |
| Zn | ≤ 0.07% | — | — |
Mechanical properties
O (annealed)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 65–95 | MPa |
| Yield Strength | ≥ 20 | MPa |
| Elongation | ≥ 25 | % |
H24
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 105–145 | MPa |
| Yield Strength | ≥ 75 | MPa |
General
| Property | Value | Unit |
|---|---|---|
| Density | ≥ 2.71 | g/cm3 |
| Thermal Conductivity | ≥ 229 | W/mK |
| Electrical Conductivity | ≥ 61 | %IACS |
Related materials
EN AW-6082
3.2315High-strength structural aluminium alloy in the Al-Mg-Si family. One of the strongest 6xxx series alloys due to manganese addition. Replaced 6061 in many European applications. Used for trusses, bridges, cranes, transport, scaffolding, and marine applications. Heat treatable (T6/T651).
EN AW-5083
3.3547The highest-strength non-heat-treatable aluminium alloy. Excellent corrosion resistance (especially seawater), good weldability. Standard alloy for shipbuilding, offshore, pressure vessels, cryogenic applications, and armour plate. Not for continuous service above 65°C under stress (SCC risk).
EN AW-2024
3.1355Classic high-strength aerospace aluminium alloy (Al-Cu-Mg). Excellent fatigue resistance — the standard choice for aircraft fuselage skins and wing tension members. Poor corrosion resistance and weldability. Often supplied with Alclad cladding for corrosion protection. In use since 1931.
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