EN AW-7050 vs EN AW-2011: 13% composition overlap. Significantly different materials serving different application areas.
EN AW-7050 vs EN AW-2011
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-7050
3.4144
High-strength aerospace aluminium developed by Alcoa for thick-plate applications. Zr addition (instead of Cr) reduces quench sensitivity for superior properties in thick sections. T7451 temper gives excellent SCC resistance + fracture toughness. Used for fuselage frames, bulkheads, wing spars, and thick structural aerospace components.
EN AW-2011
3.1655
The original free-cutting aluminum alloy. Al-Cu with Pb+Bi additions for chip-breaking — the highest machinability rating of any Al alloy. Being phased out in EU for RoHS compliance (Pb content). Replaced by 6026 (Bi only) or 6082 in new designs. Still widely used in US/Asia. Used for high-volume screw machine products, precision bushings, fittings, and instruments.
| EN AW-7050 | EN AW-2011 | |
|---|---|---|
| Material Number | 3.4144 | 3.1655 |
| Category | Aluminum | Aluminum |
| Standard | AMS 4050 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-7050 | EN AW-2011 | Overlap |
|---|---|---|---|
| Si | 0–0.12% | 0–0.4% | OK |
| Mn | 0–0.1% | — | — |
| Cu | 2–2.6% | 5–6% | No overlap |
| Al | — | — | — |
Mechanical properties
| Property | EN AW-7050 | EN AW-2011 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 510 | 365–395 | MPa |
| yield_strength | ≥ 450 | 290–310 | MPa |
| elongation | ≥ 9 | 8–12 | % |
Compatibility Assessment
EN AW-7050 and EN AW-2011 have significantly different compositions (13% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN AW-7050 the same as EN AW-2011?
EN AW-7050 and EN AW-2011 have a 13% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-7050 with EN AW-2011?
Generally not recommended. The compositions differ significantly (13% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-7050 and EN AW-2011?
The main differences are in the following elements: Cu, Zn. EN AW-7050 is a Aluminum grade, while EN AW-2011 is a Aluminum grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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