2024 is a typical hard aluminum alloy in the aluminum copper magnesium system, with a reasonable composition and good comprehensive performance. Many countries produce this alloy, which is used in the amount of hard aluminum. The characteristics of this alloy are high strength, certain heat resistance, and can be used as working parts below 150 ° C. At temperatures above 125 ° C, the strength of 2024 alloy is higher than that of 7075 alloy. The formability is relatively good in the hot state, annealed state, and newly quenched state, and the heat treatment strengthening effect is significant, but the heat treatment process requires strict requirements. Poor corrosion resistance, but protection can be obtained by coating with pure aluminum; Easy to produce cracks, but can also be riveted using special processes. Widely used in aircraft structures, rivets, truck hubs, propeller components, and various other structural components.

Alloy grade		Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Zr	other		AL
New brand	Old brand	0.50	0.50	3.8-4.9	0.3-0.9	1.2-1.8	0.10	0.25	0.15	——	each	total
2024	——										0.05	0.15	allowance

Alloy grade, aluminum alloy grade and condition	Rm/Mpa	Rp0.2/Mpa	Elongation rate/%	Hardness/HBW α
2024-T4	425	275	14	120