EN AW-6061 vs EN AC-AlSi9Cu3(Fe): 23% composition overlap. Significantly different materials serving different application areas.
EN AW-6061 vs EN AC-AlSi9Cu3(Fe)
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 AC-AlSi9Cu3(Fe)
EN AC-46000
The most widely used aluminum high-pressure die casting alloy in Europe. Si 8-11% and Cu 2-4% provide excellent castability and good strength without heat treatment. Higher Fe tolerance (up to 1.3%) prevents die soldering in HPDC. NOT heat-treatable (Cu and Fe form insoluble phases). Used for engine blocks, transmission housings, structural automotive die castings, power tool housings, and industrial die cast components. Equivalent to ASTM A380.0.
| EN AW-6061 | EN AC-AlSi9Cu3(Fe) | |
|---|---|---|
| Material Number | 3.3211 | EN AC-46000 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 1706 |
Chemical composition (wt%)
| Element | EN AW-6061 | EN AC-AlSi9Cu3(Fe) | Overlap |
|---|---|---|---|
| Si | 0.4–0.8% | 8–11% | No overlap |
| Mn | 0–0.15% | ≤ 0.55% | OK |
| Cr | 0.04–0.35% | — | — |
| Cu | 0.15–0.4% | 2–4% | No overlap |
Mechanical properties
| Property | EN AW-6061 | EN AC-AlSi9Cu3(Fe) | Unit |
|---|---|---|---|
| tensile_strength | ≥ 290 | ≥ 240 | MPa |
| yield_strength | ≥ 240 | ≥ 140 | MPa |
| elongation | ≥ 8 | ≥ 1 | % |
Compatibility Assessment
EN AW-6061 and EN AC-AlSi9Cu3(Fe) have significantly different compositions (23% 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 AC-AlSi9Cu3(Fe)?
EN AW-6061 and EN AC-AlSi9Cu3(Fe) have a 23% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-6061 with EN AC-AlSi9Cu3(Fe)?
Generally not recommended. The compositions differ significantly (23% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-6061 and EN AC-AlSi9Cu3(Fe)?
The main differences are in the following elements: Si, Cu, Mg. EN AW-6061 is a Aluminum grade, while EN AC-AlSi9Cu3(Fe) is a Aluminum grade.
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