2099 T83 aluminum-lithium alloy bars

Jan 03, 2023

2099 aluminum-lithium alloy is the third generation of new aluminum-lithium alloy developed by Alcoa in cooperation with the U.S. Air Force Wright Materials Laboratory and Dayton University. This alloy overcomes the shortcomings of traditional aluminum-lithium alloys such as low fracture toughness and high anisotropy, and is one of the best aluminum-lithium alloys in the world.

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Composition specification

Cu	2.4~3.0	Ti	≤0.10
Li	1.6~2.0	Fe	≤0.07
Zn	0.4~1.0	Si	≤0.05
Mg	0.1~0.5	Be	≤0.0001
Mn	0.1~0.5	Al
Zr	0.05~0.12	其他	single	≤0.05
Zr	0.05~0.12	其他	total	≤0.15

Application

2099 aluminum-lithium alloy is a representative of aluminum-lithium alloys that reduce aircraft quality, increase aircraft effective load, improve fuel efficiency, and improve performance. 2099 aluminum-lithium alloy is widely used in aircraft structural parts, such as 2099-T83 aluminum bars and 2099-T83 aluminum extrusions. Manufacture aircraft floor beams and seat rails; 2099-T8E67 aluminum extrusions are used to manufacture wing longitudinal beams; 2099 T8E77 aluminum plates are used to manufacture other aircraft parts.