EN AW-7049
EN AW-7049Ultra-high-strength Al-Zn-Mg-Cu alloy — Zn 7.2-8.4%, higher than 7075 (5.1-6.1%). T73 temper: UTS 510-570 MPa with improved stress corrosion resistance over T6. Used for aircraft structural forgings (landing gear, wing spars), missile components, and high-strength fasteners. Developed for thick-section forgings where 7075-T6 SCC resistance is insufficient.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AA | USA | AA 7049 / UNS A97049 | A97049 | REF |
| 🇪🇺 | EN | Europe | EN AW-7049 / AlZn8MgCu | EN AW-7049 | 100% |
Sources: AA, EN 573-3
Chemical composition comparison (wt%)
Side-by-side: EN AW-7049 (EN 573-3) vs EN AW-7049 / AlZn8MgCu (EN) (EN 573-3)
| Element | EN AW-7049 (EN 573-3) | EN AW-7049 / AlZn8MgCu (EN) | Overlap |
|---|---|---|---|
| Mn | — | 0–0.5% | — |
| Cr | — | 0.1–0.22% | — |
Mechanical properties
Compatibility verdict
EN AW-7049 and EN AW-7049 / AlZn8MgCu: 100% composition match
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-7075
3.4365The classic high-strength aerospace aluminium alloy. Al-Zn-Mg-Cu composition provides the highest strength of all common aluminium alloys in T6 temper. Poor weldability and limited corrosion resistance. Used for aircraft structures, M16 rifle receivers, rock climbing gear, and precision mold plates.
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