AA 2124 Aluminum Alloy
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Family: Aluminum Alloy
Copper Alloy (Al-Cu). AA designation 2124.
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Tensile Strength | 420.5 MPa |
| Yield Strength | 252.0 MPa |
| Elongation | 86.5% |
| Hardness (Rockwell) |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Al | 93.13 |
| Cr | 0.06 |
| Cu | 4.4 |
| Fe | 0.18 |
| Mg | 1.46 |
| Mn | 0.64 |
| Ni | 0.015 |
| Si | 0.2 |
| Ti | 0.01 |
| Zn | 0.25 |
Where to Buy AA 2124 Aluminum Alloy
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Description
AA 2124 is a high-purity variant of 2024 with tighter control of iron and silicon impurities, resulting in improved fracture toughness and fatigue performance in thick plate form. The alloy contains 3.8–4.9% copper with magnesium and manganese, and is typically used in the T851 temper. Applications include aircraft bulkheads, fuselage frames, and structural components requiring superior damage tolerance.