2024 aluminum
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2024 is an aluminum alloy, with copper as the alloying element. It is strong, with excellent fatigue strength and average machinability, but is not weldable.
It is commonly produced in several heat temper grades, 2024-O, 2024-T3, 2024-T351, and 2024-T42.
There are two more advanced alloys based on 2024, 2124 and 2324.
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[edit] Basic properties
As with all aluminum alloys, 2024 has a density of 2.73 g/cm³ (0.098 lb/in³).
[edit] Mechanical properties
The mechanical properties of 2024 depend greatly on the temper of the material. [1]
[edit] 2024-0
Un-heat-treated 2024 (2024-0 temper) has maximum tensile strength no more than 30,000 - 32,000 psi (207-220 MPa), and maximum yield strength no more than 14,000 psi (96 MPa). The material has elongation (stretch before ultimate failure) of 10-12%.
[edit] 2024-T3
T4 temper 2024 sheet has an ultimate tensile strength of 58,000 - 62,000 psi (400 - 427 MPa) and yield strength of at least 39,000 - 40,000 psi (269-276 MPa). It has elongation of 10-15%.
[edit] 2024-T351
T351 temper 2024 plate has an ultimate tensile strength of at least 57,000 - 62,000 psi (393 - 427 MPa) and yield strength of 40,000 - 41,000 psi (276-282 MPa). It has elongation of 4-12%.
[edit] 2124
[edit] 2324
[edit] Uses
2024 is widely used for construction of aircraft structures, such as wings and fuselages. [2] The superior metal fatigue resistance of 2024 makes it popular for aircraft structures which are under tension, such as the bottom of wings. [3]
[edit] See also
[edit] References
- ^ Alcoa 2024 data sheet (pdf), accessed October 13, 2006
- ^ Aluminum Information at aircraftspruce.com, accessed October 13, 2006
- ^ Fundamentals of Flight, Shevell, Richard S., 1989, Englewood Cliffs, Prentice Hall, ISBN 0-13-339060-8, Ch 18, pp 373-386.
