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2024 is an aluminum alloy, with copper and magnesium as the alloying elements. It is used in applications requiring high strength to weight ratio, as well as good fatigue resistance. It is not weldable, and has average machinability. Due to poor corrosion resistance, it is often clad with aluminium or Al-1Zn for protection, although this may reduce the fatigue strength.
Additional recommended knowledge
Aluminum alloy 2024 has a density of 2.73 g/cm³ (0.098 lb/in³).
The mechanical properties of 2024 depend greatly on the temper of the material. 
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%.
T3 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%.
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%.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "2024_aluminum". A list of authors is available in Wikipedia.|