Aluminum Lithium (Al-Li) Alloy 8090 Description
Aluminum Lithium (Al-Li) Alloy 8090 is an alternative to 2014 and 2024. It is a medium-strength aluminum-lithium alloy with excellent mechanical properties. Density is reduced by 10% when matched against comparable alloys, and elastic modulus is increased by approximately 11%.
Lithium is the lightest metal element in the world. The addition of lithium to aluminum reduces the specific gravity of the alloy and increases the stiffness while still maintaining high strength, good corrosion resistance and fatigue resistance, and suitable ductility.
Lithium reduces density and increases stiffness when alloyed with aluminum. With proper alloy design, aluminum-lithium alloys can have exceptional combinations of strength and toughness.
Aluminum Lithium (Al-Li) Alloy 8090 Specifications
Metal Mechanic Property
Item#
|
Density, p/gcm3
|
Temper
|
Tensile Strength Rm/MPa
|
Yield Strength Rpo2/Mpa
|
Specific elongation, A/%
|
Fracture toughness KIC/MPa
|
Elasticity mdulus E/GPa
|
8090
|
2.55
|
T8
|
460
|
380
|
4
|
26
|
77.0
|
|
Metal Composition
Item#
|
Al
|
Li
|
Cu
|
Mg
|
Zr
|
Ag
|
Zn
|
Mn
|
Others
|
8090
|
Bal.
|
2.4
|
3
|
2
|
0.12
|
-
|
-
|
-
|
-
|
Metal Mechanic Property
Item#
|
E/Gpa
|
Rm/Mpa
|
Rpo2/Mpa
|
A/%
|
r/g cm-3
|
8090
|
79
|
550
|
512
|
46.4
|
2.54
|
Specifications for Delivery
type
|
cast ingot
|
rolled plate
|
Al-Li alloy
|
φ80-φ200mm
|
thickness:1-20mm width:100-450mm
|
Al-Li intermediate alloy
|
Li:5%-30%
|
-
|
Aluminum Lithium (Al-Li) Alloy 8090 Application
Aluminum Lithium Alloys are used in marine, aerospace, and electronic components because of their lightweight, good ductility, and corrosion resistance. The aerospace industry uses include wing leading and trailing edges, fuselage bulkhead webs, and internal framework parts. Al-Li is being considered for many applications in advanced aircraft including wing structures.