LM1771 Aluminum Lithium (Al-Li) Alloy 1420

Catalog No.	LM1771
Surface	Polished
Thickness	1-20 mm
Width	100-450 mm
Diameter	φ80-φ200

Aluminum–lithium alloys 1420 (Al-Li alloys) are a set of alloys of aluminum and lithium, often also including copper and zirconium. Stanford Advanced Material provides standard and other customized sizes Aluminum-Lithium alloy rolled plate/ingot. Our Aluminum Lithium (Al-Li) Alloy 1420 has reached the standard for supply to the institute of the military.

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Description

Specification

Technical Data Sheet

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.

Al-Li-alloy Al-lithium-ingot

Aluminum Lithium Alloy 1420 Specifications

Chemical Composition of 1420 Alloy

Alloy

Others

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	R_po2/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.