EN AW-6061 vs EN AW-2011: 46% composition overlap. Significantly different materials serving different application areas.
EN AW-6061 vs EN AW-2011
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-6061
3.3211
The most widely used aluminium alloy in North America. Good balance of strength, corrosion resistance, and machinability. Heat treatable (T6). Used for structural components, automotive parts, marine fittings, bicycle frames, and general engineering. Being replaced by 6082 in European applications.
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-6061 | EN AW-2011 | |
|---|---|---|
| Material Number | 3.3211 | 3.1655 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-6061 | EN AW-2011 | Overlap |
|---|---|---|---|
| Si | 0.4–0.8% | 0–0.4% | Partial |
| Mn | 0–0.15% | — | — |
| Cr | 0.04–0.35% | — | — |
| Cu | 0.15–0.4% | 5–6% | No overlap |
Mechanical properties
| Property | EN AW-6061 | EN AW-2011 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 290 | 365–395 | MPa |
| yield_strength | ≥ 240 | 290–310 | MPa |
| elongation | ≥ 8 | 8–12 | % |
Compatibility Assessment
EN AW-6061 and EN AW-2011 have significantly different compositions (46% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN AW-6061 the same as EN AW-2011?
EN AW-6061 and EN AW-2011 have a 46% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-6061 with EN AW-2011?
Generally not recommended. The compositions differ significantly (46% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-6061 and EN AW-2011?
The main differences are in the following elements: Si, Cu. EN AW-6061 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.
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.