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2024 T3 Aluminum Sheet
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2024 T3 aluminum sheet is a high-strength Al-Cu alloy from the 2000 series, widely used in aerospace, transportation, and structural applications due to its excellent strength-to-weight ratio and fatigue resistance. The “T3” designation indicates a solution heat-treated, cold-worked, and naturally aged temper.
Chemical Composition of 2024 Aluminum
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Copper (Cu) | 3.8 – 4.9 |
| Magnesium (Mg) | 1.2 – 1.8 |
| Manganese (Mn) | 0.3 – 0.9 |
| Silicon (Si) | ≤ 0.5 |
| Iron (Fe) | ≤ 0.5 |
| Chromium (Cr) | 0.1 – 0.35 |
| Zinc (Zn) | ≤ 0.25 |
Composition Highlights
Copper (Cu): Provides high strength
Magnesium (Mg) & Manganese (Mn): Improve fatigue resistance and structural stability
Alloy is heat-treatable to achieve T3 temper properties
Mechanical and Physical Properties
| Property | Typical Value (T3 Temper) |
|---|---|
| Yield Strength | ≥ 325 MPa |
| Tensile Strength | 470 – 530 MPa |
| Elongation | ≥ 10% |
| Density | 2.78 g/cm³ |
| Hardness (Brinell) | 120 – 135 HB |
Key Characteristics
High Strength
Stronger than most 3000 and 5000 series alloys
Ideal for load-bearing applications
Good Fatigue Resistance
Maintains performance under cyclic stress
Critical for aerospace and transportation components
Moderate Corrosion Resistance
Less resistant than 5000 series; often requires protective coating or anodizing
Heat Treatable and Formable
Can be solution heat-treated and cold-worked for enhanced mechanical performance
Suitable for bending, rolling, and forming in T3 temper
Common Applications
Aerospace and Aviation
Aircraft fuselage panels
Wing components and structural parts
Aerospace assemblies requiring high strength and low weight
Transportation Industry
Automotive chassis and high-performance vehicle parts
Rail and truck components
Heavy-duty structural applications
Industrial and Structural Engineering
Machinery bases and frames
Tooling components and molds
Load-bearing structural panels
Defense and Military
Armored vehicle panels
Military aircraft components
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