EN AW-2024 vs EN AC-AlSi7Mg0.3: 16% composition overlap. Significantly different materials serving different application areas.
EN AW-2024 vs EN AC-AlSi7Mg0.3
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-AlSi7Mg0.3
EN AC-42100
The most important aluminum sand and gravity die casting alloy worldwide. Excellent castability, good mechanical properties after T6 heat treatment, and outstanding weldability. Si 6.5-7.5% provides excellent fluidity, Mg 0.25-0.45% enables precipitation hardening. Used for automotive wheels, suspension components, aerospace structural castings, engine brackets, and high-integrity safety-critical castings. Equivalent to ASTM A356.0 and DIN G-AlSi7Mg.
| EN AW-2024 | EN AC-AlSi7Mg0.3 | |
|---|---|---|
| Material Number | 3.1355 | EN AC-42100 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 1706 |
Chemical composition (wt%)
| Element | EN AW-2024 | EN AC-AlSi7Mg0.3 | Overlap |
|---|---|---|---|
| Si | 0–0.5% | 6.5–7.5% | No overlap |
| Mn | 0.3–0.9% | ≤ 0.1% | No overlap |
| Cr | 0–0.1% | — | — |
| Cu | 3.8–4.9% | ≤ 0.05% | No overlap |
Mechanical properties
| Property | EN AW-2024 | EN AC-AlSi7Mg0.3 | Unit |
|---|---|---|---|
| tensile_strength | 400–430 | ≥ 140 | MPa |
| yield_strength | 270–280 | ≥ 80 | MPa |
| elongation | ≥ 10 | ≥ 2 | % |
Compatibility Assessment
EN AW-2024 and EN AC-AlSi7Mg0.3 have significantly different compositions (16% 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-AlSi7Mg0.3?
EN AW-2024 and EN AC-AlSi7Mg0.3 have a 16% composition overlap. They are generally not directly interchangeable.
Can I replace EN AW-2024 with EN AC-AlSi7Mg0.3?
Generally not recommended. The compositions differ significantly (16% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-2024 and EN AC-AlSi7Mg0.3?
The main differences are in the following elements: Si, Mn, Cu, Mg. EN AW-2024 is a Aluminum grade, while EN AC-AlSi7Mg0.3 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.