Aluminum Lithium Alloy 1420 Description
Aluminum–lithium alloys 1420 (Al-Li alloys) are a set of alloys of aluminum and lithium, often also including copper and zirconium. 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 Alloy 1420 Specifications
Chemical Composition of 1420 Alloy
|
Alloy
|
Si
|
Fe
|
Cu
|
Mn
|
Mg
|
Sc
|
Li
|
Zn
|
Be
|
Ti
|
Zr
|
Others
|
Al
|
Each
|
Total
|
1420
|
0.15
|
0.20
|
-
|
-
|
4.5~6.0
|
0.005Be
|
0.9~2.3
|
0.05
|
0.0005Na
|
-
|
0.008~1.5
|
0.05
|
0.15
|
Remainder
|
Mechanical Properties
Item #
|
Density, p/gcm3
|
Temper
|
Tensile Strength (Rm/MPa)
|
Yield Strength (Rp0.2/MPa)
|
Breaking Elongation
|
Fracture Toughness (Kic/MPa)
|
1420
|
2.7
|
T6
|
405-410
|
205-255
|
7-8
|
25
|
Metal Composition
Item#
|
Li
|
Cu
|
Mg
|
Zr
|
Ag
|
Zn
|
Mn
|
Others
|
1420
|
2.0
|
-
|
5
|
-
|
-
|
-
|
0.5
|
-
|
Metal Mechanic Property
Item#
|
E/Gpa
|
Rm/Mpa
|
Rpo2/Mpa
|
A/%
|
r/g cm-3
|
1420
|
73.8
|
448
|
310
|
8
|
2.49
|
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 Alloy 1420 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.
Aluminum Lithium Alloy 1420 Packaging
As required.