EN AW-7020 vs EN AW-2011: 36% composition overlap. Significantly different materials serving different application areas.
EN AW-7020 vs EN AW-2011
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-7020
3.4335
Weldable 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.
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-7020 | EN AW-2011 | |
|---|---|---|
| Material Number | 3.4335 | 3.1655 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%) — Pro
| Element | EN AW-7020 | EN AW-2011 | Overlap |
|---|---|---|---|
| Si | 0–0.35% | 0–0.4% | OK |
| Mn | 0.05–0.5% | — | — |
| Cr | 0.1–0.35% | — | — |
| Cu | 0–0.2% | 5–6% | No overlap |
| Al | |||
| Ti | |||
| Zn | |||
| Mg | |||
| Fe | |||
| Zr | |||
| Pb | |||
| Bi |
Sign up free and get 3 full comparisons immediately.
Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | EN AW-7020 | EN AW-2011 | Unit |
|---|---|---|---|
| Tensile Strength | ≥ 350 | 365–395 | MPa |
| Yield Strength | ≥ 280 | 290–310 | MPa |
| Elongation | ≥ 10 | 8–12 | % |
| Elastic Modulus | |||
| Density |
Sign up free and get 3 full comparisons immediately.
Sign up free — 3 comparisons/day freeCompatibility Assessment
EN AW-7020 and EN AW-2011 have significantly different compositions (36% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN AW-7020 the same as EN AW-2011?
EN AW-7020 and EN AW-2011 have a 36% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-7020 with EN AW-2011?
Generally not recommended. The compositions differ significantly (36% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-7020 and EN AW-2011?
The main differences are in the following elements: Cu, Zn. EN AW-7020 is a Aluminum grade, while EN AW-2011 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.