Chemical composition and use 2a06 aluminum alloys: 2a06 aluminum - copper - typical hard lines of magnesium alloy, its composition is more reasonable, better overall performance. Many countries are producing the alloy, it is the largest amount of hard aluminum. Characteristics of the alloy: high strength, a certain heat resistance, can be used as 150 ° c below the working parts. Temperature higher than 125 ° c, 2024 alloy strength is higher than 7075 alloy. Hot state, annealing and quenching conditions forming the new performance is better than the heat treatment significantly enhanced the effect, but the heat treatment process demanding. Corrosion resistance is poor, but with aluminum coating can be effectively protected; welding easy to crack, but using a special welding process can also be riveting. Widely used in aircraft structures, rivets, card wheel hub, propeller components and various other structures. 4494029_s1_conew1 {31DF27CC-2E1F-4884-8430-EF3DC {chemical composition of silicon si iron manganese mn cu fe copper chrome cr mg magnesium titanium zinc zn 9BA85018-B809-402F-BF70-8808B 2878525254245_conew2 2a12 aluminum alloy aluminum each other elements ti Total 0.5 0.5 3.80-4.90 0.30-0.90 1.20-1.80 0.10 0.25 0.15 0.05 2a12 mechanical and physical properties of tensile strength mpa 470 0.2% yield strength alloy mpa 325 Elongation% 105 10 fatigue strength hardness hb 120 conductivity 20 ° c 30 20 ° c resistivity of the elastic modulus of 68 nm 48 density kg.m-3 2770 2011 Aluminum Alloy Typical uses cutting screws and require good mechanical processing products 2014 applications requiring high strength and hardness (including temperature) of the occasion. Heavy aircraft, forgings, plate and extrusion materials wheel with a structural element, multi-stage rocket first stage fuel tank and spacecraft parts, truck frame and suspension system parts 2017 is the first industrial application of the 2XXX alloy, currently The narrow range of applications, mainly for the rivets, general machinery parts, construction and transportation structures, propeller and accessories 2024 aircraft structures, rivets, missile components, the card wheel hub, propeller components and various other structures 2036 2048 auto body sheet metal parts axial compressor blades aerospace vehicle structures and structural components of weapons 2A01 working temperature is less than equal to 100 ℃ operating temperature structural rivets 2A02 turbojet engine 2A06 200 ~ 300 ℃ operating temperature of 150 ~ 250 ℃ of aircraft structures and working temperature of 125 - Aircraft structural rivets 250 ℃ higher than the intensity of 2A10 2A01 alloy for the manufacture of temperature less than or equal structure of moderate intensity, propeller blades, means of transport and the building structures of the aircraft structure rivets 2A11 aircraft of 100 ℃. Moderate-intensity aircraft bolts and rivets 2A12 aircraft skins, bulkheads, wing ribs, spars, rivets, construction and transportation transport structure 2A14 complex shape forgings and forging aerospace 2A16 working temperature of 250 ~ 300 ℃ aircraft parts, aircraft parts welded airtight container and the cockpit work at room temperature and high 2A17 working temperature of 225 ~ 250 ℃ 2A50 complex shape of moderate parts 2A60 aircraft engine compressor wheel, wind wheels, fans, impellers, etc. 2A70 aircraft skin, piston aircraft engines, wind wheel, roulette and other 2A80 aero-engine compressor blades, impellers, piston, rings and other high-temperature parts 2A90 aero-engine piston