7249 T73 T74 T7452 Aircraft Aerospace Aviation Aluminum Alloy Forgings for Landing Gear
On the basis of 7149 alloy, the impurity content of Fe and Si can be reduced. Compared with 7249 T7651 and 7075 T7651, it has better resistance to peeling corrosion, stress corrosion resistance, fracture toughness and fatigue life, and is also convenient for heat treatment. 7249 aluminum alloy forgings profile is mainly used for the forging parts of the aircraft's main landing gear.
AlloyAlloy seriesMain Featuresσb Value/MPaWork Temperature/ºC72497049 series(Europe)On the basis of 7149 alloy, the impurity content of Fe and Si can be reduced. Compared with 7249 T7651 and 7075 T7651, it has better resistance to peeling corrosion, stress corrosion resistance, fracture toughness and fatigue life, and is also convenient for heat treatment
~
<125
AlloyMain FeaturesMain products and statesApplication parts and typical parts7249The comprehensive performance is better than 7149, and it is an improved alloy of 7049.Aluminum forgings: T73,T74,T7452
Aluminum extrusion:T73511,T76511The main landing gear of the aircraft is forged.
Chemical Composition of 7049AlloyAlloySiFeCuMnMgCrNiZnTiZr OthersAlEachTotal72490.100.121.3~1.90.102.0~2.40.12~0.18~7.5~8.20.06~0.050.15Remainder