2024
UNS A92024
Description
Aluminum alloy 2024 is one of the most popular high strength aluminum alloys with excellent fatigue resistance, which can be strengthened by heat treatment. It also shows good machinability in an annealing state, has moderate plasticity in the quenched and just quenched state, and can be suitable for hot welding technology such as resistance welding, but brazing is not suggested. However, this alloy's copper content renders it sensitive to corrosion, making the relatively low corrosion resistance. Due to the high strength and excellent fatigue resistance, it is heavily utilized in the aerospace and military sector in fuselage applications such as structures and wing tension members. Usually, the alloy is available in T3, T4 and T8 tempers and the annealed state.
Chemical Component
| Al | Si | Fe | Cu | Ti | Zn | Mn | Mg | Cr | Others |
|---|---|---|---|---|---|---|---|---|---|
| Balance | 0.50% max | 0.50% max | 3.80-4.90% | 0.15% max | 0.25% max | 0.30-0.90% | 1.20-1.80% | 0.10% max | 0.05% max |
Basic Information
| Items | 2024 |
|---|---|
| Catalog | ACAM-Al-A004 |
| Density | 0.1 lb/in3 (2.78 g/cm3) |
| Electrical Conductivity | 30% IACS |
| Young's Modulus | 10.6 Msi (73 GPa) |
| Melting Point | 950 °F (510 °C) |
Material Forms
Alfa Chemistry offers aluminum alloy 2024 in a variety of forms, including Flats, Round Bar, Plate, Sheet, Strip, Round Tube, Rectangular Tube, Square Tube, Square Bar, Hexagon Bar, Channels and Tee Sections.
Mechanical Properties
| Temper | Thickness, mm | Tensile Strength, ksi | Yield Strength, ksi | Elongation, % |
|---|---|---|---|---|
| 0-Sheet & plate | 0.25-12.44 | 32.0 max | 14.0 max | 12 |
| T3-Flat Sheet | 0.203-6.32 | 63-64 | 42 | 10-15 |
| T351-Plate* | 6.35-101.60 | 57-64 | 41-42 | - |
| T4-Coiled Sheet | 0.254-3.16 | 62 | 40 | 12-15 |
| T81-Flat Sheet | 0.254-6.32) | 67 | 58 | 5 |
| T851-Plate | 6.35-38.07 | 66-67 | 57-58 | 5 |
* Strength decreases as thickness increases
Features
- Good fatigue resistance
- Excellent toughness at moderately high strength levels
- Good strength
- Improved fracture toughness
Applications
Aluminum alloy 2024 can be used in a variety of applications, including:
- Aircraft fuselage
- Commercial & military aircraft
- Wing tension members
- Critical aircraft structures
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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Alfa Chemistry is a manufacturer of standard & custom specialty metals & alloys. We stock a wide variety of alloys in different shapes and specifications. If you can't find the product or specification you need, please contact us directly.
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