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 Introduction of a 2024 aluminum 
 2024 aluminum for the Al - Cu - Mg typical hard aluminum alloy, its composition is more reasonable and better overall performance. Many countries are producing this alloy, is the largest amount of hard aluminum. The alloy is characterized by: high strength, heat resistance and can be used as the working parts below 150 ℃. Temperature higher than 125 ° C, the strength of the 2024 alloy is higher than the 7075 alloy. Forming performance under thermal conditions, annealing and quenching state is better than the heat treatment to strengthen the effect is remarkable, but the heat treatment process is demanding. The poor corrosion resistance, but with aluminum coating can be effectively protected; welding cracks easily, but using a special process welding, can also be riveting. Widely used in aircraft structures, rivets, card wheel hub, propeller components and various other structural parts. 
 Second, the 2024 aluminum range of applications 
 2024 aluminum is widely used in aircraft structures (skin, skeleton, ribbed bulkheads, etc.), rivets, missile components, the card wheel hub, propeller components, and various other structures. 
 The chemical composition of 2024 aluminum 
 Silicon: 0.5% Iron: 0.5% Cu: Mg 3.8-4.9 Mn 0.3 - 0.9 1.2 - 1.8 Cr: 0.10 Nickel: - 
 Zinc: 0.25 Ti: 0.15 Other: 0.15 Al: the rest 
 The mechanical properties of 2024 aluminum 

 Tensile strength Mpa 0.2% yield strength Mpa Elongation% fatigue strength and hardness HB conductivity 20 ° C to 20 ° C resistivity nΩ.m elastic modulus 
 4,703,251,010,512,030 48 68 
 Five, the significance of 2024 aluminum grades 
 In aluminum alloy grades represent the meaning, the following example according 2024T3 grade. The first 2 aluminum and aluminum alloy groups - aluminum and copper alloys. Aluminum and aluminum alloy group is divided into nine categories. 
 First class: 1 Department: Industrial pure aluminum 
 The second category: 2 Department: Al-Cu alloys 
 The third category: 3 Series: aluminum fierce alloy 
 Class 4: 4 Department: Al-Si alloy 
 Class 5: 5 Department: Al-Mg alloy 
 VI: 6 Series: Mg-Si alloy 
 VII: 7 series: magnesium aluminum zinc copper alloy 
 Class 8: 8 Department: other alloys 
 Class 9: Department: spare alloy 
 0 indicates the control of the content of alloying elements or impurities limit: 0 indicates the original alloy, the impurity limit content no special control, 1-modified alloy, said one or more individual impurities or limit content of alloying elements special controls. 
 24 represents the different alloys: decimal point behind the two lowest aluminum alloy content, such as 1050 aluminum content of 99.50%, double-digit no special significance, and only used to identify the different alloys in the same group. 
 T represents the heat treatment. T behind the general with one or more than one number, such as T3, T3 heat treatment. The different figures represent the different heat treatment. 
 Six, the relevant technical standards 
 Aluminum with a national standard (GB / T 3880-2006), uniform standards applicable to the aluminum alloy strip materials.