2024 T4 aluminum alloy is an aluminum alloy that provides high strength and good fatigue resistance, and is widely used especially in the aerospace and defense industries. This alloy belongs to the Al-Cu-Mg system and has a structure that is solution heat treated and naturally aged thanks to the T4 temper. This condition gives the alloy a balanced mechanical performance while also allowing it to maintain its formability. The main reason it is preferred in structural applications is its high strength-to-weight ratio.

Corrosion resistance is one of the weakest aspects of the 2024 T4 alloy, and therefore it is generally supported by surface coating processes. Methods such as Alclad coating or anodizing increase the alloy’s resistance to atmospheric conditions. In contrast, its strength is quite high, especially in terms of tensile and fatigue strength, and thanks to this property, it is preferred in aircraft fuselages, wing structures, and high load-bearing components. It extends fatigue life by exhibiting stable behavior under vibration.

In terms of machinability, the 2024 T4 alloy offers good performance and is suitable for machining processes. However, its weldability is low, and mechanical joining methods (such as riveting) are generally preferred. Its bending and forming capability is better than the T3 temper, providing advantages in the production of complex geometries. However, due to its high strength, care must be taken in excessive deformation applications.

Coatability is a critical parameter for this alloy because surface treatments both improve corrosion resistance and provide aesthetic and functional properties. When operating in vibrating environments, the 2024 T4 alloy offers reliable performance thanks to its high fatigue resistance. Therefore, it is also used outside aerospace in automotive, defense, railway systems, and some high-performance sports equipment.

The 2024 T4 alloy has distinct advantages and disadvantages compared to other alloys. For example, it provides higher strength than 6061-T6 alloy, but lower corrosion resistance. Compared to 7075-T6 alloy, it offers better formability but lower maximum strength. In addition, compared to the 5083 alloy, its machinability and strength are higher, but its resistance to marine environments is lower. These comparisons highlight the importance of selecting the right alloy depending on the application.

MATERIAL COMPOSITION STANDARDS

2024 T4 is available in the following standards:
• 2024 T4 Cold-Drawn Round Bar; AMS 4120, AMS QQ-A-225/6, ASTM B211
• 2024 T4 Cold-Drawn Bar; AMS 4120, AMS QQ-A-225/6, ASTM B211
• 2024 T4 Cold-Drawn Wire; AMS 4120, AMS QQ-A-225/6, ASTM B211
• 2024 T4 Extruded Round Bar; AMS QQ-A-200/3, ASTM B221
• 2024 T4 Alclad Sheet; AMS QQ-A-250/5, AMS 4279, ASTM B209, EN 2703
 

Characteristic Properties of 2024 T4: 

• Strength: High
• Machinability: Good
• Weldability: Moderate (Spot welding is preferred)
• Formability: Poor
• Corrosion Resistance: Moderate
• Heat Treatment: Yes
   

Common Applications of 2024 T4: 
Used in aircraft fuselage connection components,
Aircraft engine covers,
Also used in computer components.
 

STOCK
2024 T4 is supplied in sheet/plate, rod/bar, and sheet form.

• Sheet/Plate
• Sheet
• Rod/Bar