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High-Strength Aluminum-Lithium Alloy
695 MPa Ultra-High-Strength Aluminum-Lithium Alloy
Zhengzhou Light Alloy Institute has successfully developed an ultra-high-strength aluminum-lithium alloy and achieved industrial-scale, mass production of the material, boasting a tensile strength of 695 MPa, a yield strength of 566 MPa, and an elongation rate exceeding 6%!
Aluminum-lithium alloy 5A90 is a medium-strength, weldable aluminum-lithium alloy characterized by its low density, high elastic modulus, and excellent corrosion resistance. It is used to manufacture aerospace structural components, delivering significant weight reduction benefits. This alloy can replace the existing 2024 (2A12) aluminum alloy in applications such as cabin sections, wall panels, and housings.
Aluminum-lithium alloy 2195 is a high-strength, high-elastic-modulus, weldable aluminum-lithium alloy known for its excellent low-temperature performance. This alloy is 3% to 8% lighter in density compared to 7075 and 2219 alloys, making it an ideal replacement for these materials in aerospace cryogenic storage tanks—and delivering significant weight reduction benefits.
The aluminum-lithium alloy 8090 can replace aluminum alloys such as 2014, 2024, 7010, and 7075, and is widely used in applications including floor mounting components, brackets, stiffeners, frames, wing spars, stringers, longitudinal beams, ribs, bulkheads, and tail cone skins; flight control systems and avionics baseplate structures, as well as nose sections and cabin ceiling frames. It’s also employed in flight control structures, skin panels (for the lower fuselage), cabin ceiling frames, and flat cover plates, among other critical aerospace components.
The aerospace-grade aluminum-lithium alloy superplastic sheet developed by Zhengzhou Light Alloy Institute CO., LTD. has successfully completed delivery. The sheet measures 1.2 meters in width, 4 meters in length, and boasts a thickness ranging from 1.5 to 3 mm. Compared to conventional aluminum-lithium alloy sheets, this new alloy features finer grain structures, higher strength, and superior ductility. Moreover, the industrially produced sheets demonstrate a remarkable high-temperature elongation rate of up to 500%, enabling ultra-plastic forming processes even under extreme heat conditions.
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