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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AA | USA | AA 2024 | A92024 | REF |
| 🇪🇺 | EN | Europe | EN AW-2024 / AlCu4Mg1 | 3.1355 | 100% |
| 🇯🇵 | JIS | Japan | A2024 | — | 98% |
| 🇫🇷 | AFNOR | France | A-U4G1 | — | 98% |
| 🇬🇧 | BS | United Kingdom | 2L97 (old) | — | 95% |
Sources: ASTM B209, EN 573-3, JIS H4000, NF EN 573-3, BS L
Mechanical properties — Pro
T3
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Elastic Modulus | ||
| Density |
T351
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation |
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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-5052
3.3523Medium-strength non-heat-treatable aluminium with excellent corrosion resistance and good weldability. Lower Mg than 5083/5754 for better formability. Used for marine components, fuel tanks, appliances, electronic chassis, and general sheet metal.
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