7249 aluminum alloy forgings profile

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.

Alloy	Alloy series	Main Features	σb  Value/MPa	Work Temperature/℃
7249	7049 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

Alloy	Main Features	Main products and states	Application parts and typical parts
7249	The comprehensive performance is better than 7149, and it is an improved alloy of 7049.	Aluminum forgings： T73，T74，T7452 Aluminum extrusion：T73511，T76511	The main landing gear of the aircraft is forged.

Chemical Composition of 7049Alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

Others

Al

Each

Total

7249

0.10

0.12

1.3~1.9

0.10

2.0~2.4

0.12~0.18

~

7.5~8.2

0.06

~

0.05

0.15

Remainder