2024 T4 Aircraft Aluminum Sheet Plate for Fuselage Skins
What Is Aircraft Fuselage Skin
The fuselage skin is a crucial component of the aircraft structure. It mainly bears the strength and stiffness of the fuselage, while also protecting the internal structures and systems.
The 2024-T4 aluminum alloy used for the fuselage skin features high strength, good formability, and excellent plate shape and surface quality.
The low density characteristic of 2024 aluminum alloy helps reduce the overall weight of the aircraft, thereby improving fuel efficiency and load capacity.
Although 2024 aluminum alloy is relatively weak in corrosion resistance, its corrosion performance can be significantly improved through surface treatments (such as anodizing).
Mechanical Properties of 2024 T4 Aircraft Aluminum Sheet Plate
| Alloy | Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| 2024 | T4 | 430~450 | 280~310 | 18~21 |
Specification of 2024 Alloy for Aircraft Fuselage
| Alloy | Type | Temper | Thickness(mm) | Width(mm) |
| 2024 | Thick plate | T351 | 4-260 | 1200-3800 |
| Thin plate | T3/T4 | 0.3-0.4 | 1000-2600 |
2024 T4 Aircraft Aluminum Alloy Chemical composition
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Zr | Ti | Standard |
| 2024 | 0.50 | 0.50 | 3.8-4.9 | 0.30-0.90 | 1.20-1.80 | 0.10 | 0.25 | - | 0.15 | GB/AMS/EN |
Properties of 2024 T4 Aluminum Sheet Material for Fuselage Skin
- 1. High Strength: The tensile strength and yield strength of 2024 aluminum alloy are both high, making it suitable for withstanding various forces experienced by the aircraft during flight.
- 2. Good Formability: This alloy can be easily formed into complex shapes, which is crucial for creating the curves and contoured surfaces of the fuselage.
- 3. Excellent Plate and Surface Quality: The 2024-T4 alloy maintains a flat plate shape and a smooth surface during processing, making it easy for subsequent surface treatments and coatings.
- 4. Fatigue Resistance: 2024-T4 has good fatigue resistance, ensuring durability and longevity in structural applications where repeated stress cycles are common.
The 2024-T4 aluminum alloy is widely used in structural components of both civil and military aircraft, such as fuselage, wing beams, and tail structures, especially in areas requiring high strength and lightweight properties. Besides the aerospace field, this material is also applicable to structural parts in high-performance automobiles and other transportation vehicles.
Processing of 2024 T4 Aircraft Aluminum Sheet Plate
- Heat Treatment: 2024 aluminum alloy is typically subjected to T4 heat treatment to enhance its mechanical properties. The alloy in T4 condition exhibits high strength and good ductility after cooling.
- Welding and Joining: In terms of welding and joining, the welding performance of 2024 aluminum alloy is relatively poor, often requiring mechanical connections or specialized welding processes.
Chemical Composition of 2024 T4 Aircraft Aluminum Alloy
| Element | Chemical Composition Range (%) |
| Aluminum (Al) | Balance |
| Copper (Cu) | 3.8 - 4.9 |
| Silicon (Si) | ≤ 0.5 |
| Iron (Fe) | ≤ 0.5 |
| Manganese (Mn) | 0.3 - 0.9 |
| Magnesium (Mg) | ≤ 1.0 |
| Chromium (Cr) | ≤ 0.1 |
| Zinc (Zn) | ≤ 0.25 |
| Titanium (Ti) | ≤ 0.15 |
| Other Elements | Each ≤ 0.05 |
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