AA 2524 Aluminum Alloy
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Familie: Aluminum Alloy
Copper Alloy (Al-Cu). AA designation 2524.
Overview
AA 2524 is a damage-tolerant aluminium–copper alloy whose composition and microstructure are optimised for fatigue crack-growth resistance beyond that of 2024-T3. Copper is held at 4.0–4.5% with iron and silicon kept low to minimise the coarse constituent particles that seed fatigue cracks. This focus on long crack-initiation life makes it a material of choice for wide-body commercial aircraft fuselage skin panels, where damage tolerance is paramount.
Leistungsbewertungen
Performance Radar
| Eigenschaft | Rating |
|---|---|
| Strength | 5 / 10 |
| Corrosion Res. | 6 / 10 |
| Lightweight | 9 / 10 |
| Machinability | 8 / 10 |
| Affordability | 7 / 10 |
| Heat Res. | 4 / 10 |
Zusammensetzung
Mechanische Eigenschaften
| Zugfestigkeit | 493.5 MPa |
| Streckgrenze | 336.6 MPa |
| Bruchdehnung | 24.3% |
| Härte (Rockwell) |
Chemische Zusammensetzung
| Element | Prozentsatz (%) |
|---|---|
| Al | 93,514 |
| Cr | 0,01 |
| Cu | 4,4 |
| Fe | 0,05 |
| Mg | 1,387 |
| Mn | 0,619 |
| Si | 0,03 |
| Ti | 0,03 |
| Zn | 0,008 |
Bezugsquellen AA 2524 Aluminum Alloy
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Beschreibung
AA 2524 is a damage-tolerant aluminum-copper alloy with optimized composition and microstructural control to achieve superior fatigue crack growth resistance compared to 2024-T3. It contains 4.0–4.5% copper with tightly controlled iron and silicon levels to minimize coarse constituent particles that initiate fatigue cracks. The alloy is used in wide-body commercial aircraft fuselage skin panels where long fatigue life and damage tolerance are paramount.