2024-t351 aluminum alloy 2024 aluminum - copper - magnesium lines typical of the hard alloy, its composition is more reasonable, better overall performance. Many countries are producing the alloy, is the largest amount of hard aluminum. The alloy is characterized by: high strength, a certain degree of heat resistance, can be used as 150 ° c below the working parts. Temperatures higher than 125 ° c, 2024 alloy strength is higher than 7075 alloy. Thermal state, annealing and quenching conditions forming the new performance is better than heat treatment significantly enhanced the effect, but the heat treatment process demanding. Corrosion resistance is poor, but with aluminum coating can be effectively protected; easy to crack when welding, but can be welded using a special process can also be riveting. Widely used in aircraft structures, rivets, card wheel hub, propeller components and various other structures. 2024 alloy mechanical and physical properties of 2024 aluminum alloy chemical composition of silicon iron fe 0.5 si 0.5 cu 3.80-4.90 copper, magnesium and manganese mn 0.30-0.90 mg 1.20-1.80 chrome zinc zn 0.25 cr 0.10 Other elements aluminum titanium ti 0.15 0.05 Tensile Strength mpa 470 0.2% yield strength mpa 325 Elongation% 105 10 Fatigue strength hardness hb 120 Conductivity 20 ° c 30 20 ° c resistivity nm 48 68 Elastic Modulus Density kg.m-3 2770