EN AW-2024 vs EN AW-2011: 59% composition overlap. Moderate differences, generally not direct substitutes.
EN AW-2024 vs EN AW-2011
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-2024
3.1355
Classic 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.
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-2024 | EN AW-2011 | |
|---|---|---|
| Material Number | 3.1355 | 3.1655 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-2024 | EN AW-2011 | Overlap |
|---|---|---|---|
| Si | 0–0.5% | 0–0.4% | OK |
| Mn | 0.3–0.9% | — | — |
| Cr | 0–0.1% | — | — |
| Cu | 3.8–4.9% | 5–6% | No overlap |
Mechanical properties
| Property | EN AW-2024 | EN AW-2011 | Unit |
|---|---|---|---|
| tensile_strength | 400–430 | 365–395 | MPa |
| yield_strength | 270–280 | 290–310 | MPa |
| elongation | ≥ 10 | 8–12 | % |
Compatibility Assessment
EN AW-2024 and EN AW-2011 have moderate differences (59% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN AW-2024 the same as EN AW-2011?
EN AW-2024 and EN AW-2011 have a 59% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-2024 with EN AW-2011?
Generally not recommended. The compositions differ significantly (59% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-2024 and EN AW-2011?
The main differences are in the following elements: Cu. EN AW-2024 is a Aluminum grade, while EN AW-2011 is a Aluminum grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.