What is 2024 Aluminum Alloy?
2024 aluminum alloy is one of the most widely recognized aircraft-grade aluminum alloys. It is an ideal choice when a material with an excellent strength-to-weight ratio is required. Known for its high strength and outstanding fatigue resistance, 2024 aluminum is particularly suitable for aerospace applications.
The primary alloying element in the 2000 series is copper. Common standards include AMS 4035, QQ-A-250/4, or GB/T 3190-2017. Due to its high copper content, 2024 aluminum has relatively lower corrosion resistance and is often coated with high-purity aluminum or anodized to provide surface protection. The alloy features high strength, fatigue resistance, good machinability, and excellent cutting performance. However, its corrosion resistance and weldability are limited; welding can lead to thermal cracking and stress corrosion, and it is typically welded using seam, flash, or specialized welding methods.
Popular 2024 Aluminum Products from GNEE:
2024 Aluminum Sheet/Plate: Tempers T3, T4, T6, T351, T451, and T851. Standards: AMS-QQ-A-250/4, ASTM B209, AMS4037 2024.
2024 Aluminum Bar: Tempers T3, T351, T3511, T4, T42, and T851. Standards: AMS-QQ-A-225/6, AMS-QQ-A-200/3, EN 573-3-1994.
2024 Drawn Aluminum Tube: Tempers O, T3, T4, and T6. Standards: ASTM B210, AMS 4088, AMS 4087, AMS-WWT-700/3.
2024 Aluminum Extrusion Profile: Tempers O, T3, T8, T351, T3511, and T8511. Standards: AMS-4152, ASTM B221, AMS-QQ-A-200/3.
2024 Aluminum Foil: Tempers T3, T351, T851, T361, T4, and T6. Standards: AMS 4044, ASTM B209, MIL-DTL-15272.
2024 Aluminum Wire: Tempers T3, T4, T351, and T851, O. Standards: AMS-QQ-A-250/4, ASTM B21, and EN 573-3.
What is 7075 Aluminum Alloy?
7075 aluminum alloy is primarily alloyed with zinc, giving it superior strength and an excellent strength-to-weight ratio. Standards include AMS-QQ-A-225/9 and GB/T 3880-2017. As one of the lightest and strongest aluminum alloys, 7075 offers steel-like strength, good fatigue resistance, and moderate machinability. These properties make it essential in aerospace, defense, and other high-performance industries. However, its high alloy content results in very high hardness, making welding and forming challenging.
Popular 7075 Aluminum Products from GNEE:
7075 Aluminum Sheet/Plate: Tempers T6, T651, T62, T652, T76, T7651, T73, and T7351. Standards: AMS-QQ-A-250/3, ASTM B247, BS 2 L88.
7075 Aluminum Rod: Tempers O, T6, T651, T7351. Standards: AMS 4122 (T6), AMS 4123 (T651), AMS 4124 (T7351).
7075 Aluminum Forging: Tempers T6, T352, T73, and T74. Standards: AMS 4126 (T6), AMS 4141 (T73), AMS 4147 (T7352).
7075 Aluminum Profile: Tempers T3, T4, T6, T7451, T7651, T7452, T74511, T76511. Standards: AMS 4154, AMS 4166, BSL160.
7075 Aluminum Wire: Tempers O, T6, and T7351. Standards: AMS 4122 (T6), AMS 4124 (T7351), AMS 4187 (O).
7075 Mobile Middle Plate Aluminum Sheet: Tempers T6, T651. Standards: ASTM B209, EN 485.
GNEE offers a wide range of 2024 and 7075 aluminum products to meet aerospace, defense, and industrial needs.
| Feature | 7075 Aluminum | 2024 Aluminum |
|---|---|---|
| Strength | Extremely High | High |
| Corrosion Resistance | Moderate (requires coating) | Low (requires cladding or protection) |
| Fatigue Resistance | Good | Excellent |
| Machinability | Good | Excellent |
| Weldability | Poor | Poor |
| Cost | Higher | Lower |
| Stock Availability | Widely available | Widely available |
| Common Buyers | Aerospace, Defense, Automotive | Aerospace, Automotive, Industrial |
2024-T3 Aluminum vs. 7075-T6 Aluminum
Both 2024-T3 and 7075-T6 are high-strength, aerospace-grade aluminum alloys, but they have notable differences:
Strength: 7075-T6 offers higher tensile and yield strengths than 2024-T3, making it more suitable for heavy-duty applications.
Fatigue Resistance: 2024-T3 excels in fatigue resistance, making it ideal for components subjected to cyclic loading.
Corrosion Resistance: 7075-T6 performs better against corrosion, particularly when anodized, whereas 2024-T3 is more prone to corrosion and generally requires protective coatings.
Weldability: Both alloys have limited weldability, but 2024-T3 can be welded more easily using specialized techniques.
Applications:
2024-T3: Aircraft skins, fuselage parts, and applications where fatigue resistance is critical.
7075-T6: Aerospace frames, structural components, and highly stressed parts.
For projects where fatigue performance is crucial, 2024-T3 is recommended. For applications demanding maximum strength, 7075-T6 is the preferred choice.
GNEE supplies both 2024-T3 and 7075-T6 aluminum alloys for aerospace and high-performance applications.
