EN AW-2011 vs EN AW-6026: 2011 has Pb (legacy) — 6026 is the RoHS-compliant replacement
EN AW-2011 vs EN AW-6026
Side-by-side chemical composition and mechanical property comparison.
Overview
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-6026
3.0619
Free-machining Al-Mg-Si alloy with Bi addition for chip-breaking. Developed as Pb-free alternative to 2011 (the traditional machining aluminum). T9 temper gives excellent machinability with good strength. Used for high-volume automatic lathe parts, precision bushings, fittings, valve bodies, and screw machine products.
| EN AW-2011 | EN AW-6026 | |
|---|---|---|
| Material Number | 3.1655 | 3.0619 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-2011 | EN AW-6026 | Overlap |
|---|---|---|---|
| Si | 0–0.4% | 0.6–1.4% | No overlap |
| Mn | — | 0.2–0.8% | — |
| Cu | 5–6% | 0–0.5% | No overlap |
| Al | — | — | — |
Mechanical properties
| Property | EN AW-2011 | EN AW-6026 | Unit |
|---|---|---|---|
| tensile_strength | 365–395 | ≥ 370 | MPa |
| yield_strength | 290–310 | ≥ 320 | MPa |
| elongation | 8–12 | ≥ 7 | % |
Compatibility Assessment
2011 has slightly better machinability (Pb+Bi vs Bi-only in 6026) and higher strength. 6026 is RoHS-compliant (Pb-free), has better corrosion resistance, and is the future-proof choice for EU markets. Choose 6026 for new designs; 2011 only where regulatory allows and max machinability is critical.
Frequently Asked Questions
Is EN AW-2011 the same as EN AW-6026?
EN AW-2011 and EN AW-6026 have a 60% composition overlap. 2011 has Pb (legacy) — 6026 is the RoHS-compliant replacement
Can I replace EN AW-2011 with EN AW-6026?
Generally not recommended. The compositions differ significantly (60% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-2011 and EN AW-6026?
The main differences are in the following elements: Si, Cu, Bi. EN AW-2011 is a Aluminum grade, while EN AW-6026 is a Aluminum grade.
Related Comparisons
View full data for each material:
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.