EN AW-7020
3.4335Weldable high-strength 7xxx aluminium — unique because most 7xxx alloys have poor weldability. Low Cu content gives better SCC resistance than 7075. Good mechanical property recovery after welding. Used for railway carriages, military bridges, mobile cranes, aircraft freight containers, and structural transport components.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AA | USA | AA 7020 | A97020 | REF |
| 🇪🇺 | EN | Europe | EN AW-7020 / AlZn4.5Mg1 | 3.4335 | 100% |
| 🇬🇧 | BS | United Kingdom | H17 | — | 95% |
| 🇫🇷 | AFNOR | France | A-Z5G | — | 93% |
Sources: ASTM B221, EN 573-3, BS 1474, AFNOR
Mechanical properties
Compatibility verdict
EN AW-7020 and H17: 95% 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.
Export this comparison as PDF
Professional datasheet with equivalents, composition, and properties. Ready for your QM documentation.
Download PDF — €4.90Included with PRO subscription