High-Strength Aluminum-Lithium Alloy

• Application: 3c
• Certification: RoHS, ISO9001, JIS, EN
• Technique: Hot Rolled
• Grade: --
• Temper: --
• Surface Treatment: Mill Finish
• Alloy: Alloy
• Transport Package: Export Standard Wooden Pallet
• Specification: According to Customer Requirement
• Trademark: Chalco Aluminum
• Origin: Henan China
• HS Code: 7606125900
• Production Capacity: 15000mt/Month

Product Description

High-strength aluminum-lithium alloy (fifth-generation aluminum alloy)

Aluminum-lithium alloys have excellent mechanical properties and processing properties, which can replace the current 2024, 2A12, 2A14, 7075, 7050, 7055 and other high-strength alloys. Under the premise of ensuring the same mechanical properties, the weight can be reduced by 5% to 20%, which is suitable for military use. The current urgent need for weight reduction in aircraft and civil electronic products has important economic and social benefits.

Aluminum-lithium alloy characteristics
1. The density is low, every time 1% of lithium is added, the density is reduced by 3%
2. High specific modulus, high specific strength, instead of conventional high-strength aluminum alloy, the modulus of elasticity is increased by 6%, and the stiffness is increased by 15%-20%
3. Excellent superplastic forming performance
4. Excellent corrosion resistance
5. Good casting, hot processing (rolling, forging, extrusion), welding
(Laser welding, friction stir welding), machining formability

Chemical composition of aluminum-lithium alloy

Alloy	Chemical composition/%
	Cu	Li	Zn	Mg	Mn	Zr	Ti	Ag	Sc	Fe	Si	Other
												Single	Merge	Al
5A90(1420)	-	1.9~2.3	-	4.5~6.0	-	0.08~0.15	0.10	-	-	0.20	0.15	0.05	0.15	Margin
1421	-	1.8~2.2	-	4.5~5.3	-	0.06~0.10	0.10	-	0.15	0.200	0.2	0.05	0.15	Margin
8090	1.0~1.6	2.2~2.7	0.25	0.6~1.3	0.10	0.04~0.16	0.10	-	-	0.2	0.3	0.05	0.15	Margin
2297	2.5~3.1	1.1~1.7	0.05	0.25	0.10~0.5	0.08~0.15	0.12	-	-	0.10	0.10	0.05	0.15	Margin
2A97	3.65~3.96	1.35~1.55	0.4~0.6	0.35~0.55	0.2~0.4	0.1~0.2	0.02~0.06	0.01	-	0.20	0.10	0.05	0.10	Margin
2196	2.5-3.3	1.4-2.1	0.35	0.25-0.8	0.35	0.04-0.18	0.10	0.25-0.6	-	0.15	0.12	0.05	0.15	Margin
2195	3.7~4.3	0.8~1.2	0.25	0.25~0.8	0.25	0.08~0.16	0.10	0.25~0.6000	-	0.12	0.15	0.05	0.15	Margin
2198	2.9-3.5	0.8-1.1	0.35	0.25-0.8	0.5	0.04-0.18	0.10	0.10-0.50	-	0.10	0.08	0.05	0.15	Margin
2099	2.4-3.0	1.6-2.0	0.4-1.0	0.1-0.5	0.1-0.5	0.05-0.12	0.10			0.07	0.05	0.05	0.15	Margin
2055	3.20-4.20	1.0-1.30	0.30-0.70	0.20-0.60	0.10-0.50	0.05-0.15	0.10	0.20-0.7	-	0.10	0.07	0.05	0.15	Margin
2050	3.2-3.9	0.7-1.3	0.25	0.20-0.6	0.20-0.50	0.06-0.14	0.10	0.20-0.7	-	0.10	0.08	0.05	0.15	Margin
2060	3.4-4.5	0.6-0.9	0.30-0.50	0.6-1.1	0.10-0.500	0.05-0.15	0.10	0.05-0.50	-	0.07	0.07	0.05	0.15	Margin
2065	3.8-4.7	0.8-1.5	0.30	0.25-0.8	0.15-0.50	0.05-0.15	0.10	0.15-0.50	-	0.10	0.10	0.05	0.15	Margin

Aluminum-lithium alloy performance index

Alloy	Density ρ/g cm-3	Temper	Standard	Tensile strengthRm/MPa	Yield Strength Rpo2/MPa	Elongation after breaking A/%	Fracture toughness KC/MPa	Elastic Modulus /GPa
5A90 (1420)	2.47	Forging T6 Vertical	GJB8506-2015	≥405	≥205	≥7.0	25	73.8
		Sheet T6 Horizontal	GJB8504-2015	≥410	≥255	≥8.0
8090	2.55	T8	Q/QYHJ-A-8090-2018	≥460	≥380	≥4	26	77.0
2196	2.63	T8	Q/QYHJ-A-2196-2018	≥520	≥470	≥6	-	76.5
2297	2.65	T8	Q/QYHJ-A-2297-2018	≥440	≥400	≥10	30	77.3
2A97	2.70	T8	Q/QYHJ-A-2A97-2018	≥510	≥450	≥8	27	75.0
2195	2.72	T8	Q/QYHJ-A-2195-2018	≥560	≥500	≥6	31	76.0
		O		<200	<150	>15
2198	2.7	T8	Q/QYHJ-A-2198-2018	≥450	≥400	≥4	-	76.5
2099	2.63	T8	Q/QYHJ-A-2099-2018	520	470	9	30	78
2050	2.70	T8	Q/QYHJ-A-2050-2018	≥490	≥455	≥6.0	-	76.5
2065	2.7	T8	Q/QYHJ-A-2065-2018	≥580	≥550	≥6.0	-	-
Cast aluminum lithium alloy	2.55	T6	-	≥400	≥300	≥6	-	-

Application characteristics of aluminum-lithium alloy materials

5A90 (1420)	Thick plates, thin plates,profiles, forgings	It is a medium-strength, weldable, low-density, high-modulus, high-corrosion-resistant aluminum-lithium alloy, used to manufacture aerospace structural parts, etc., with obvious weight reduction effects.
8090	Thick plates,thin plates,profiles, forgings	It can replace aluminum alloys such as 2014, 2024, 7010, 7075, and is widely used in floor mountings, brackets, stiffeners, frames, spars, stringers, longitudinal beams, ribs, partitions, and tail spine skins; flight control systems And avionics floor structure, nose, cabin top frame; flight control structure, skin siding (lower fuselage), cabin top frame, flat cover; brackets, door rails, seat rails, etc.
2297	Thick plates	Compared with 2124-T851 alloy, it has higher fatigue damage resistance, and its fatigue life is 3-5 times higher than other aviation aluminum alloys. Compared with other conventional alloys, while the strength is improved, the density is reduced by 5% and the elastic modulus is increased by 8%. Mainly used for aircraft fuselage frames, wing spars, bulkhead partitions, etc.
2A97	Thin plate, thick plate	It is a new research material of aluminum-lithium alloy with completely independent intellectual property rights in my country, which is stronger than the 7050-T7451 thick plate.The toughness is equivalent, the density is 5% lower, and the modulus of elasticity is 7% higher. It can replace 7050 for the manufacture of aircraft main bearing structural parts, and the weight reduction effect is outstanding.
2195	Thick plates,thin plates,profiles, forgings	Weldable aluminum-lithium alloy with high strength and high modulus of elasticity has excellent low temperature performance. The density of the alloy is 5% lighter than that of 2219 alloy, and its strength is 30% higher than the latter. It can replace 2219 alloy for aerospace cryogenic storage tank materials , Obvious weight loss effect has been achieved.
Cast aluminum-lithium alloy	Metal and membrane shell precision castings	As an alloy with low density, high elastic modulus, high specific strength and high specific rigidity, and good fluidity, cast aluminum-lithium alloy has very broad application prospects in the aerospace field where weight reduction is urgent. Mainly used in missile compartments, missile barrels, fairings, inlet lip, hatch, fuel tank, precision instrument shells, instrument mounting frames, structural cabins with complex shapes, etc.

Product supply specifications

Alloy		Dimensions
Size	Round ingot slab ingot	Ф100×240mm,Ф240×400mm,Ф400×800mm,800×600×200mm,300×700×950mm , and other customized specifications
	Extruded sheet	60×5mm,80×7mm,105×4mm,220×26mm,250×40mm, and other customized specifications
	Extrude rod	Φ9.5mm,Φ12mm,Φ22mm,Φ30mm,Φ60mm,Φ100mm, and other customized specifications
	Forged plate	100×600×1500mm,120×600×1200mm,150×600×1000mm, and other customized specifications
	Forged rod	Ф30mm-Ф400mm
	Plate	Plate(0.5-50mm)Thick×1200mm Wide×4000mm Long
	Casting	Metal and membrane shell precision-cast parts with a single weight of 0.2kg~150kg