for aircraft is a 2 ××× alloy, which has high strength and good machinability, but poor corrosion resistance. 2 ××× series aluminum bars are characterized by high hardness, of which the original copper content is the highest, about 3-5%.
2 ××× series aluminum bars belong to aviation aluminum. With the development of China's aerospace industry, 2 ××× series aluminum bars are used more and more.
2117 is a typical duralumin alloy in the aluminum copper magnesium system. Its composition is reasonable and its comprehensive properties are good. Many countries produce this alloy, which is the largest amount of duralumin. The alloy is characterized by high strength and certain heat resistance, which can be used as working parts below 150 ° C. Temperature above 125 ° C.
The strength of 2117 alloy is higher than that of 7075 alloy. The formability is better in the hot state, annealing and new quenching state, and the effect of heat treatment is significant, but the heat treatment process is strict. It has poor corrosion resistance, but it can be effectively protected by covering with pure aluminum; it is easy to produce cracks during welding, but it can be welded or riveted by using special technology. Widely used in aircraft structure, rivets, truck hub, propeller components and other structural parts.
2117 aluminum round bar for aircraft is usually used in rivets, general mechanical parts, aircraft, ships, transportation, building structures, transport structures, propeller components and accessories, etc.
