AMS 4037 2024 T3 T351 Aluminum Plate

aluminum alloy 2024 is commonly used with an anodized finish or in clad form with a thin surface layer of high purity aluminum.  As an enhanced sheet for fuselage applications, Alclad offers improved fracture toughness and fatigue crack growth while maintaining the strength characteristics of the alloy. 2024 aluminum is often used for applications in the aerospace industry.

Chemical Composition of 2024 Aluminum Alloy 

• Aluminum (Al): Balance

• Copper (Cu): 3.8% – 4.9%

• Magnesium (Mg): 1.2% – 1.8%

• Manganese (Mn): 0.3% – 0.9%

• Iron (Fe): ≤ 0.5%

• Silicon (Si): ≤ 0.5%

• Zinc (Zn): ≤ 0.25%

• Chromium (Cr): ≤ 0.10%

• Titanium (Ti): ≤ 0.15%

• Other elements: Each ≤ 0.05%, Total ≤ 0.15%

Mechanical Properties of 2024 Aluminum Plate 

2024-T3

• Tensile Strength: approx. 470 MPa

• Yield Strength: approx. 325 MPa

• Elongation: approx. 10% – 15%

• Hardness: approx. 120 HB

• Good fatigue resistance and moderate machinability

2024-T351

• Tensile Strength: approx. 470 MPa

• Yield Strength: approx. 325 MPa

• Elongation: approx. 10% – 15%

• Hardness: approx. 120 HB

• Stress-relieved condition with improved dimensional stability during machining

2024 Aluminum Alloy Plate Stock list

Typical Applications of 2024 Aircraft Aluminum Plate

2024-T3 / T351 aluminum plate is best suited for aerospace structures and precision machined parts where fatigue resistance, strength, and weight reduction are critical.

1. Aircraft Structural Components

2024 aluminum is one of the most widely used aircraft-grade alloys, commonly applied in:

• Aircraft fuselage skins

• Wing structures

• Stringers and frames

Its key advantages are high fatigue strength and an excellent strength-to-weight ratio, making it ideal for components subjected to cyclic loading.

2. Precision Machined Aerospace Parts

2024-T351 (stress-relieved condition) is particularly suitable for CNC machining, including:

• Aircraft fittings

• Brackets and supports

• Structural connectors

Compared to T3, T351 offers better dimensional stability and reduced distortion during machining.

3. Riveted and Fastened Structures

2024 alloy provides excellent riveting performance, and is widely used in:

• Riveted panels

• Assembly components

This is one of the key reasons for its long-term use in the aerospace industry.

4. High Fatigue-Resistance Parts

It is well suited for components subjected to repeated or cyclic stress, such as:

• Aircraft load-bearing elements

• Mechanical parts under cyclic loading

Compared to 6061, 2024 offers superior fatigue resistance.

5. Mold and Tooling Applications (Limited Use)

In applications where high strength is required but corrosion resistance is less critical, it can also be used for:

• Precision molds

• Tooling plates

Surface treatments such as Alclad or anodizing are typically considered depending on the operating environment.