2024 Aluminum

2024 Aluminum Alloy is a high-strength aluminum alloy with copper as the primary alloying element (2024 composition). It boasts an excellent strength-to-weight ratio and good fatigue performance, making it particularly suitable for structural components subjected to high loads and high fatigue stress, such as aircraft skins, wing spars, landing gear structural parts, and various high-strength connecting components.Welcome contact

As a professional aluminum supplier, Chalco offers aerospace-grade 2024 products that meet AMS and ASTM standards, including sheets, bars, tubes, and profiles. With AS9100, ISO9001, and NADCAP certifications, we ensure our product quality meets the stringent requirements of high-end applications.

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2024 Aluminum Stock

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Chalco 2024 Aluminum Standards & Certifications

As a leading global aluminum supplier, Chalco is committed to providing high-quality 2024 aluminum alloy for the automotive, machinery manufacturing, electronics, and aerospace industries. To ensure that every batch of our products meets the stringent requirements of our customers for strength, fatigue resistance, chemical composition accuracy, and environmental compliance, Chalco has obtained and continuously maintains the following key system certifications and process qualifications:

• ISO 9001 - Quality Management System (QMS) Certification
• ISO 14001 - Environmental Management System Certification
• AS9100 - Aerospace Quality Management System Certification, applicable to the manufacturing of aircraft, spacecraft, and related products
• NADCAP HT - Rigorous audit for heat treatment processes, ensuring stable and reliable material heat treatment
• NADCAP NDT - Professional capability certification for Non-Destructive Testing (NDT) methods such as ultrasonic and X-ray inspection

These certifications not only standardize Chalco's production processes but also ensure strict compliance in key aspects such as chemical composition, mechanical properties, fatigue, and corrosion testing. This guarantees that our 2024 aluminum alloy consistently performs in various high-strength applications.

Overview of 2024 Aluminum Alloy Product Standards

To learn more about the detailed requirements of each standard or to obtain test reports and compliance certificates for 2024 aluminum alloy, please contact Chalco's professional technical team.Quick Quote

Chalco 2024 Aluminum Supply Capability

Rolled Products

2024 aluminum sheet is widely used in aircraft skins, wing structures, and automotive mold manufacturing. We can supply both bare and Alclad sheets, supporting aerospace tempers such as T3, T4, and T351. The maximum width can reach 3800mm, meeting large-size processing needs.

Bars

Possessing excellent fatigue strength and machinability, 2024 aluminum bars are suitable for high-strength applications in aerospace structural parts, fasteners, and automotive components.

Tubes

Chalco offers 2024 aluminum tubes in various specifications produced by extrusion, cold drawing, and seamless processes, suitable for hydraulic systems, frame supports, and high-strength structural connectors.

Extruded Profiles

Chalco can customize 2024 aluminum extruded profiles with complex cross-sections, widely used in aviation tracks, frames, and civil structures. Common profiles include aluminum angles, aluminum T-bars, aluminum U-channels, and aluminum hat channels.

Forgings

Chalco can supply 2024 forged bars, forged rings, forged blocks, forged discs, forged flanges, and custom forgings, widely used in fuselage frames, aerospace fixtures, and mold bases.

Wires

Chalco offers 2024 aluminum wires produced by cold heading, extrusion, and other processes, widely used in aerospace fasteners, electrical connections, and precision machining of high-strength mechanical parts.

We can perform pre-stretching, solution treatment, and aging treatment in various tempers according to customer requirements, and provide subsequent machining services such as cutting, prototyping, and surface treatment. Want to know the specific production cycle, minimum order quantity, or price? Welcome to contact us.Quick Quote

Tempers of 2024 Aluminum

2024 O (Annealed)

Annealed and softened, exhibiting the highest plasticity and formability, used for initial processing stages such as deep drawing and bending, facilitating subsequent heat treatment.

2024 T3 (Solution Heat Treated - Cold Worked - Naturally Aged)

One of the most commonly used tempers, with medium-high strength and moderate ductility, suitable for high-strength applications requiring some formability, such as aircraft skins, structural components, and automotive parts.

2024 T351 (Solution Heat Treated - Stress Relieved by Stretching - Naturally Aged)

Achieves a strength of around 470 MPa and possesses excellent resistance to stress corrosion cracking, commonly used for critical load-bearing structural components.

2024 T4 (Solution Heat Treated - Naturally Aged)

Offers good ductility and machinability, but with slightly lower strength than T3, suitable for applications requiring subsequent processing or on-site aging.

2024 T42 (Solution Heat Treated - Naturally Aged at Customer Site)

Maintains a semi-hard state after leaving the factory, facilitating long-distance transportation and reprocessing, and is naturally aged by the customer at the usage site to a stable state.

2024 T6 (Solution Heat Treated - Artificially Aged)

Achieves peak strength (approximately 470–500 MPa) through high-temperature artificial aging, suitable for industrial and structural parts subjected to high static loads and fatigue resistance requirements.

2024 T62 (Solution Heat Treated - Artificially Aged at Customer Site)

Maintains a not fully aged state after leaving the factory, allowing customers to perform artificial aging to flexibly control final performance and delivery time.

2024 T8 (Solution Heat Treated - Cold Worked - Artificially Aged)

Combines cold work strain hardening with artificial aging, achieving the highest strength (can exceed 500 MPa) but with lower ductility, suitable for high-strength aerospace fasteners and precision components.

2024 T81 (Solution Heat Treated - Stress Relieved by Stretching - Artificially Aged)

Adds a stretching stress relief process on the basis of T6, balancing high strength and resistance to stress corrosion cracking, often used for aerospace load-bearing components.

2024 T851 (Solution Heat Treated - Hot Formed - Artificially Aged)

Combines hot forming with artificial aging processes, offering the best strength and dimensional stability, suitable for high-reliability aerospace parts.

Properties of 2024 Aluminum

1. 2024 is one of the typical high-strength aluminum alloys, with optimal performance in T3, T4, T42, and other tempers, widely used in aerospace structures.

2. Excellent fatigue resistance, making it very suitable for structural components subjected to cyclic loads.

3. Good machinability; in the annealed or partially heat-treated state, it is suitable for machining methods such as turning and drilling.

4. Poor corrosion resistance, especially in humid or corrosive environments, often improved by anodizing/coating.

5. Generally poor weldability, prone to cracking, usually replaced by riveting or mechanical connections.

Chemical Composition of 2024 Aluminum

Physical Properties of 2024 Aluminum

Mechanical Properties of 2024 Aluminum

Processing Properties of 2024 Aluminum

Machinability

In the annealed (O) or T4 temper, 2024 aluminum alloy exhibits good machining performance, allowing for high cutting speeds and excellent surface finishes. However, due to the higher copper content in the alloy, the wear on carbide cutting tools is slightly greater than that of pure aluminum, and chips are more likely to form long, tangled strands. It is recommended to use cutting tools with chip breakers and enhanced cooling lubrication to maintain stable machining quality.

Weldability

The weldability of 2024 aluminum alloy is very poor, and conventional gas welding and arc welding methods are generally not recommended because they are very prone to hot cracking and reduce the corrosion resistance of the weld. If welding is necessary, resistance welding processes such as spot welding, seam welding, or flash butt welding can be considered, but strict process control and post-weld heat treatment are required. In summary, 2024 aluminum alloy is not suitable for applications requiring good weldability.

Formability

During cold forming, sufficient plasticity can only be obtained in the annealed state for processes such as deep drawing, stretching, or bending. The formability in harder tempers such as T3/T4 decreases significantly, making it prone to cracking. For complex or large deformation parts, hot forming can be performed at around 450 °C, followed by solution treatment and aging to balance formability and final strength.

Corrosion Resistance

Unprotected 2024 aluminum alloy has poor corrosion resistance, especially prone to intergranular corrosion and crevice corrosion in humid or saline environments. Methods such as Alclad (aluminum cladding), anodizing, or applying chemical conversion coatings and paints can effectively form a dense protective layer on the alloy matrix, significantly improving its service life in harsh environments.

Comparison of 2024 Aluminum with Other Alloys