EN AW-2017A
3.1325The original "Duralumin" — historically the first high-strength aluminium alloy. Cu-Mg composition with natural aging (T4). Good machinability and moderate strength. Largely superseded by 2024 and 7xxx alloys for aerospace, but still widely used for screw-machine parts, hydraulic fittings, and structural rivets.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AA | USA | AA 2017 | A92017 | REF |
| 🇪🇺 | EN | Europe | EN AW-2017A / AlCu4MgSi(A) | 3.1325 | 100% |
| 🇯🇵 | JIS | Japan | A2017 | — | 98% |
| 🇫🇷 | AFNOR | France | A-U4G (AU4G) | — | 97% |
Sources: ASTM B211, EN 573-3, JIS H4000, AFNOR
Chemical composition comparison (wt%)
Side-by-side: EN AW-2017A (EN) (EN 573-3) vs A2017 (JIS)
| Element | EN AW-2017A (EN) | A2017 (JIS) | Overlap |
|---|---|---|---|
| Si | 0.2–0.8% | — | — |
| Mn | 0.4–1% | — | — |
| Cr | 0–0.1% | — | — |
| Cu | 3.5–4.5% | — | — |
| Ti | 0–0.25% | — | — |
| Mg | 0.4–1% | — | — |
| Fe | 0–0.7% | — | — |
| Zn | 0–0.25% | — | — |
Mechanical properties
T4 (solution treated + naturally aged)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 370 | MPa |
| Yield Strength | ≥ 220 | MPa |
| Elongation | ≥ 12 | % |
| Elastic Modulus | ≥ 72.5 | GPa |
| Density | ≥ 2.8 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| solution_treating | 495–510 °C | water | 30-60 min | Rapid quench critical |
| natural_aging | 20–25 °C | air | ~4 days min | T4 temper — naturally aged at room temperature to stable condition |
Compatibility verdict
EN AW-2017A and A2017: 98% composition match
Close equivalents but NOT identical.
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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