Aluminum Lithium (Al-Li) Alloy Weldalite 049 Description
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 Weldalite 049 is generally joined by friction stir welding.
Aluminum Lithium (Al-Li) Alloy Weldalite 049 Specifications
Metal Composition
Item#
|
Al
|
Li
|
Cu
|
Mg
|
Zr
|
Ag
|
Zn
|
Mn
|
Others
|
weldalite-049
|
Bal.
|
0.7-1.8
|
2.3-5.2
|
0.25-0.8
|
0.14
|
0.25-0.8
|
-
|
-
|
-
|
Metal Mechanic Property
Item#
|
E/Gpa
|
Rm/Mpa
|
Rpo2/Mpa
|
A/%
|
r/g cm-3
|
weldalite-049
|
78.5
|
700
|
530
|
7.9
|
2.7
|
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 Weldalite 049 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.