EN AW-2024 vs EN AC-AlSi10Mg: 35% composition overlap. Significantly different materials serving different application areas.
EN AW-2024 vs EN AC-AlSi10Mg
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 AC-AlSi10Mg
EN AC-43000
Versatile aluminum casting alloy with excellent castability and good mechanical properties. THE standard alloy for metal 3D printing (SLM/DMLS/L-PBF) due to its excellent processability with laser powder bed fusion. Also widely used in conventional sand casting and gravity die casting. Si 9-11% provides outstanding fluidity and low shrinkage. Used for automotive structural parts, aerospace components, 3D-printed functional prototypes and series parts, heat exchangers, and complex thin-walled castings.
| EN AW-2024 | EN AC-AlSi10Mg | |
|---|---|---|
| Material Number | 3.1355 | EN AC-43000 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 1706 |
Chemical composition (wt%)
| Element | EN AW-2024 | EN AC-AlSi10Mg | Overlap |
|---|---|---|---|
| Si | 0–0.5% | 9–11% | No overlap |
| Mn | 0.3–0.9% | ≤ 0.45% | Partial |
| Cr | 0–0.1% | — | — |
| Cu | 3.8–4.9% | ≤ 0.05% | No overlap |
Mechanical properties
| Property | EN AW-2024 | EN AC-AlSi10Mg | Unit |
|---|---|---|---|
| tensile_strength | 400–430 | ≥ 150 | MPa |
| yield_strength | 270–280 | ≥ 80 | MPa |
| elongation | ≥ 10 | ≥ 2 | % |
Compatibility Assessment
EN AW-2024 and EN AC-AlSi10Mg have significantly different compositions (35% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN AW-2024 the same as EN AC-AlSi10Mg?
EN AW-2024 and EN AC-AlSi10Mg have a 35% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-2024 with EN AC-AlSi10Mg?
Generally not recommended. The compositions differ significantly (35% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-2024 and EN AC-AlSi10Mg?
The main differences are in the following elements: Si, Mn, Cu, Mg. EN AW-2024 is a Aluminum grade, while EN AC-AlSi10Mg is a Aluminum grade.
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