2024 aluminum sheet belongs to the 2xxx series Al-Cu hard aluminum alloy family. It is a classic high-strength aluminum alloy known for its high strength, high hardness, and excellent machinability. It is widely used in high-end equipment and structural applications requiring exceptional strength
2024 aluminum sheet belongs to the 2xxx series Al-Cu hard aluminum alloy family. It is a classic high-strength aluminum alloy known for its high strength, high hardness, and excellent machinability. It is widely used in high-end equipment and structural applications requiring exceptional strength, stiffness, and weight reduction.
Compared with 1xxx and 3xxx series aluminum sheets, 2024 aluminum sheet offers significant advantages in strength and rigidity. It is especially suitable for structural components subjected to cyclic loads and high stress. However, its corrosion resistance is relatively moderate, so Alclad cladding or surface treatment is typically used to improve its service life.
2024 aluminum sheet is mainly supplied in heat-treated tempers. Different tempers provide different mechanical properties and processing characteristics.
2024-O Temper
Annealed condition with the lowest strength and best ductility. Suitable for complex forming operations.
2024-T3 / T4
Solution heat-treated and naturally aged. These tempers provide excellent overall performance and are among the most widely used conditions.
2024-T351 / T3511
Stress-relieved tempers with improved dimensional stability, suitable for precision machining.
2024-T6 / T851
Solution heat-treated and artificially aged. These tempers offer the highest strength and are used for heavily loaded structural components.
Extremely High Strength: 2024 aluminum alloy can be strengthened through heat treatment. In T3, T4, and T351 tempers, its strength can approach that of structural steel, making it a representative high-strength aluminum alloy.
High Hardness and Good Fatigue Resistance: It is suitable for critical load-bearing parts exposed to alternating loads, vibration, and high stress.
Excellent Machinability: 2024 aluminum sheet provides good surface finish and is easy to turn, mill, drill, and grind. It is a preferred material for precision-machined components.
Low Density and Significant Weight Reduction: It is much lighter than steel, making it suitable for weight-saving designs in aerospace, aviation, and high-end equipment.
Clearly Defined Application Scope: It is mainly used for internal structural components. It is not recommended for long-term exposure to seawater, high humidity, or high salt-spray environments without appropriate protective treatment.
| Alloy | 2024 |
| Temper | O, T3, T4, T351, T6, etc. |
| Thickness | 0.3–200 mm |
| Width | Up to 2,000 mm |
| Length | Up to 6,000 mm; cut-to-length service available |
| Surface options | Mill finish, Alclad sheet, protective-film-covered sheet |
| MOQ | 1–3 tons |
Typical Physical and Mechanical Properties
| Item | 2024-O | 2024-T3 / T351 |
| Alloy Series | 2xxx Series (Al-Cu) | 2xxx Series (Al-Cu) |
| Tensile Strength | ≥210 MPa | 400–480 MPa |
| Yield Strength | ≥90 MPa | 270–310 MPa |
| Elongation | ≥10% | ≥5–8% |
| Density | 2.78 g/cm³ | 2.78 g/cm³ |
| Heat Treatment | Annealed | Solution heat-treated, cold worked, and aged |
| Machinability | General | Excellent |
| Corrosion Resistance | Fair | Fair; surface treatment recommended |
Aerospace and Aviation: Aircraft wing beams, bulkheads, joints, load-bearing structures, frames, stiffeners, and other critical aircraft components.
High-End Molds: Mold bases, mold plates, fixtures, jigs, and tooling components.
Mechanical Structures: High-speed rotating parts, high-strength brackets, shafts, and mechanical components.
Automotive Industry: Load-bearing structural components for racing cars and high-end vehicles.
Precision Equipment:Instrument structures, moving parts, and high-strength precision components.
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Aircraft structural design requires materials to meet multiple demanding requirements simultaneously, including high strength, light weight, good fatigue performance, and consistent manufacturing reliability. 2024 aluminum sheet is one of the classic aluminum alloys that has long been used by the aerospace industry to meet these requirements.
1. Excellent Strength-to-Weight Ratio
Based on the aluminum-copper alloy system, 2024 aluminum sheet maintains a relatively low density of approximately 2.78 g/cm³ while achieving strength comparable to, or even exceeding, that of some low-alloy steels after heat treatment.
This enables aircraft structures to significantly reduce overall weight while meeting load-bearing requirements, thereby improving flight range, fuel efficiency, and payload capacity.
2. Excellent Fatigue Performance for Cyclic Loading
Aircraft are subjected to repeated loads and vibration stresses during takeoff, cruising, and landing. In tempers such as T3 and T351, 2024 aluminum sheet offers good fatigue strength and resistance to crack propagation.
It can maintain structural stability under long-term cyclic loading conditions. Therefore, it is commonly used in wings, fuselage frames, stiffeners, and other critical load-bearing sections.
3. Mature and Stable Heat-Treatment and Manufacturing System
The mechanical properties of 2024 alloy can be precisely controlled through solution heat treatment and natural or artificial aging. It provides high material consistency and reliable batch-to-batch stability.
This makes it highly suitable for the strict requirements of aerospace manufacturing, including material traceability, repeatability, reliability, and large-scale standardized production.
4. Good Machinability for Precision Structural Parts
Compared with ultra-high-strength aluminum alloys such as 7075, 2024 aluminum sheet offers better machinability while maintaining high strength. During CNC precision machining, it is less likely to adhere to cutting tools and provides good dimensional stability.
It is particularly suitable for manufacturing the large number of high-precision, thin-walled structural components used in the aerospace industry.
5. Alclad Technology Greatly Improves Corrosion Resistance
Although 2024 aluminum sheet itself has only moderate corrosion resistance, the aerospace industry widely uses Alclad 2024 aluminum sheet. This material is clad with a layer of high-purity aluminum on the surface.
The cladding effectively improves atmospheric corrosion resistance and stress-corrosion resistance, ensuring good long-term reliability under complex service conditions.
The FOB price of aluminum sheet is generally based on the daily aluminum ingot price on the London Metal Exchange (LME), plus processing charges, and adjusted according to exchange-rate fluctuations. Quotations can be provided in US dollars, euros, or Chinese yuan according to customer preference.
Customers may order customized aluminum sheet according to their required specifications or purchase available stock for fast delivery.
2024 Aluminum Sheet Price = Aluminum Sheet Weight × (Aluminum Ingot Price + Processing Fee + Packaging Fee + Transportation Fee)
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