2024 aluminum alloy is a high-strength Al-Cu-Mg alloy widely used in aerospace and structural applications. With copper as the primary alloying element, it delivers excellent fatigue resistance and one of the highest strength-to-weight ratios among 2xxx series alloys. Linsy Aluminum supplies 2024 in sheet, plate, bar, tube, and wire forms with full mill test certificates.
Available forms: sheet / plate / bar / tube / wire / profile
Common tempers: O / T3 / T4 / T351 / T851
Processing support: CNC machining / laser cutting / milling / anodizing
Quality documents: MTC report with every order
2024 aluminum alloy is a heat-treatable Al-Cu-Mg alloy belonging to the 2xxx series. Copper (3.8-4.9%) and magnesium (1.2-1.8%) are the primary alloying elements, giving 2024 one of the highest strength-to-weight ratios of all aluminum alloys. It is extensively used in aerospace structures, wing tension areas, fuselage components, and high-stress applications where fatigue resistance is critical.
In the T3 and T4 tempers, 2024 achieves its highest strength levels. However, its corrosion resistance is lower than that of 7xxx series alloys, which is why it is frequently supplied with clad (Alclad) coatings for aerospace use. Welding 2024 by conventional arc methods is generally not recommended due to cracking susceptibility; riveted or bolted joints are the standard joining method in aerospace structures.
| Alloy | Temper | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|---|
| 2024 Sheet/Coil | O, T3, T4, T6, T72, T81, T361 | 0.3-6.0 | 500-2600 | 500-6000 |
| Custom dimensions available on request | ||||
| Alloy | Temper | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|---|
| 2024 Plate | T351, T851 | 6.0-200 | 500-2600 | 500-6000 |
| Custom dimensions available on request | ||||
| Alloy | Temper | Outer Diameter (mm) | Wall Thickness (mm) | Length (mm) |
|---|---|---|---|---|
| 2024 Tube | O, T3, T4, T6 | 6-300 | 1-30 | 1000-6000 |
| Custom dimensions available on request | ||||
| Alloy | Temper | Diameter (mm) | Length (mm) |
|---|---|---|---|
| 2024 Round Bar | O, T3, T4, T351, T851 | 6-500 | 1000-6000 |
| Custom dimensions available on request | |||
| Property | Value |
|---|---|
| Diameter | 0.8-30 mm |
| Temper | O, T3, T4 |
| Weight per coil | Min 50 kg |
| Diameter tolerance | ± 0.02 mm |
| Standard | Designation |
|---|---|
| AA (US) | 2024 |
| EN (Europe) | EN AW-2024 |
| DIN (Germany) | 3.1355 / AlCu4Mg1 |
| ISO | AlCu4Mg1 |
| UNS | A92024 |
| GB (China) | 2A12 |
| JIS (Japan) | A2024 |
| Element | Content (%) |
|---|---|
| Si | 0.50 max |
| Fe | 0.50 max |
| Cu | 3.8-4.9 |
| Mn | 0.30-0.90 |
| Mg | 1.2-1.8 |
| Cr | 0.10 max |
| Zn | 0.25 max |
| Ti | 0.15 max |
| Others (each) | 0.05 max |
| Others (total) | 0.15 max |
| Al | Balance |
| Property | 2024-O | 2024-T3 | 2024-T351 | 2024-T851 |
|---|---|---|---|---|
| Tensile Strength, Ultimate (MPa) | 186 | 483 | 462 | 517 |
| Tensile Strength, Yield (MPa) | 76 | 345 | 324 | 455 |
| Shear Strength (MPa) | 124 | 283 | 262 | 276 |
| Elongation at Break (%) | 20 | 18 | 17 | 7 |
| Fatigue Strength (MPa) | 90 | 138 | 138 | 159 |
| Hardness (Brinell) | 47 | 120 | 120 | 137 |
| Temper | Characteristics | Typical Use |
|---|---|---|
| O | Annealed, lowest strength, maximum formability | Forming operations, blanking, deep drawing |
| T3 | Solution heat-treated, cold worked, naturally aged. Highest strength for sheet | Aerospace skin, wing panels, fuselage |
| T4 | Solution heat-treated, naturally aged (no cold work) | Structural components requiring moderate forming after heat treatment |
| T351 | Solution heat-treated, stress-relieved by stretching, naturally aged | Plate for machined aerospace parts |
| T851 | Solution heat-treated, stress-relieved by stretching, artificially aged | High-temperature aerospace structures, wing tension areas |
| T6 | Solution heat-treated, artificially aged. Lower ductility than T3 | Applications requiring elevated temperature stability |
| T8 | Solution heat-treated, cold worked, artificially aged. Best stress corrosion cracking resistance | High-stress components exposed to corrosive environments |
2024 offers one of the highest strength-to-weight ratios among all aluminum alloys, particularly in T3 and T351 tempers. This makes it the preferred choice for aerospace structures where weight savings directly translate to fuel efficiency and payload capacity.
The alloy exhibits excellent fatigue resistance, especially in T3 temper, which is critical for aircraft structures subject to cyclic loading during pressurization cycles and flight maneuvers.
2024 machines very well in the T3 and T351 conditions, producing clean chips and good surface finish. It is suitable for CNC milling, turning, and drilling operations for precision aerospace components.
2024 has lower corrosion resistance compared to 7xxx series alloys. For aerospace applications, Alclad 2024 (with a pure aluminum surface layer) is commonly specified to provide sacrificial corrosion protection. Anodizing and other protective coatings are recommended for unclad material.
Conventional arc welding of 2024 is generally not recommended due to solidification cracking and reduced strength in the heat-affected zone. Riveting, bolting, and adhesive bonding are the standard joining methods. Friction stir welding (FSW) can be used in specialized applications with proper process control.
2024 aluminum responds well to CNC machining, milling, and drilling in hardened tempers. For forming operations, the O temper provides maximum workability. Common surface finishes include:
Heat treatment: 2024 is solution heat-treated at 495-505°C, followed by cold water quenching. Natural aging (T3/T4) occurs over several days at room temperature. Artificial aging (T6/T8) is performed at approximately 190°C.
Every 2024 aluminum order from Linsy Aluminum is accompanied by a Mill Test Certificate (MTC) documenting chemical composition, mechanical properties, and temper verification. SGS test reports are available on request for independent third-party verification.
Linsy Aluminum operates under ISO 9001 (quality management), ISO 14001 (environmental management), and ISO 45001 (occupational health and safety) certifications. Ultrasonic testing, dimensional inspection, and surface defect examination are performed on aerospace-grade material.
Linsy Aluminum is a Shenzhen-based aluminum supplier with over 20 years of experience serving aerospace, automotive, and general engineering industries. We supply 2024 aluminum in sheet, plate, bar, tube, and wire forms, with full traceability from ingot to finished product.
Our capabilities include CNC machining, laser cutting, milling, and surface finishing. Typical custom lead time is 10-60 days depending on product form, quantity, and processing requirements. We export to Europe, South Africa, Brazil, Singapore, Turkey, Japan, South Korea, and other markets.
Contact our technical team for alloy-specific recommendations, temper selection guidance, and quotation.
What is the difference between 2024-T3 and 2024-T4?
T3 is cold worked after solution heat treatment before natural aging, giving it slightly higher strength. T4 is naturally aged without cold working, providing better ductility and formability.
Is 2024 aluminum weldable?
Conventional arc welding is not recommended for 2024 due to solidification cracking. Riveting, bolting, and friction stir welding (FSW) are preferred joining methods.
What is Alclad 2024?
Alclad 2024 is 2024 aluminum sheet with a thin layer of pure aluminum metallurgically bonded to both surfaces. The cladding provides sacrificial corrosion protection while retaining the core alloy’s strength.
How does 2024 compare to 7075?
7075 offers higher ultimate strength, but 2024 has better fatigue resistance and fracture toughness. 2024 is preferred for tension-dominated aerospace structures, while 7075 is used for compressive and high-stress components.
What is the service temperature range of 2024?
2024 performs well up to approximately 150°C for sustained service. For higher temperature applications, T851 or T6 tempers provide better stability.
What forms and sizes are available?
Sheet (0.3-6.0 mm), plate (6.0-200 mm), bar (Φ6-500 mm), tube (Φ6-300 mm), and wire (0.8-30 mm). Custom dimensions are available on request.
What is the minimum order quantity?
MOQ varies by product form and size. Contact our sales team for specific requirements.
What is the typical lead time?
Custom orders typically ship in 10-60 days depending on form, quantity, and processing requirements.
What certifications are provided?
Linsy Aluminum holds ISO 9001, ISO 14001, and ISO 45001 certifications. MTC reports accompany every order. SGS test reports are available on request.
What surface finishes are available?
Mill finish, anodizing, polishing, powder coating, and Alclad coating for aerospace applications.
Do you export internationally?
Yes, we export to Europe, South Africa, Brazil, Singapore, Turkey, Japan, South Korea, and other markets.
Linsy Advantages
Linsy Aluminum is a leading supplier of aluminum processing products, serving diverse industries including aerospace, general engineering, automotive, marine, shipbuilding and other specialized industrial applications.
We are committed to maintaining the highest standards of quality and environmental responsibility, as demonstrated by our certifications: ISO 9001:2008， ISO 14001:2004 and SGS.
