2091 Aluminum Lithium Alloy Sheet Plate

• Color: Silver
• Application: Transportation Tools, Door & Window, Decorations
• Certification: ISO9001, ASTM, JIS, GB, EN
• Technique: Extruded
• Grade: 2000 Series
• Temper: O - H112
• Model NO.: 2091
• Surface Treatment: Powder Coating
• Alloy: Alloy
• Elongation: More Than 10%
• Transport Package: Export Standard Wooden Pallet
• Specification: According to Customer Requirement
• Trademark: Chalco Aluminum
• Origin: Henan China
• HS Code: 7606125900
• Production Capacity: 20000mt/Month

Product Description

2091 aluminum lithium alloy sheet plate

The density of the 2091 alloy is 8% lower than that of the 2024 alloy, and the modulus of elasticity is 7%, while the other properties are equivalent to that of the 2 * * * and 7 * * * system alloys. The microstructure of 2091 alloy is determined by the thickness of the material and the production enterprise. In general, the material with thickness of >3.5mm has non recrystallized microstructure, while thin sheet material is a elongated recrystallized grain structure.

The mechanical properties of the 2091 alloy below125ºC T84 are relatively stable. The spalling corrosion property of the alloy is equivalent to that of the 2024 T3 alloy, which depends on the microstructure and quenching speed of the material. The greater the degree of non recrystallization, the more uniform the exfoliation corrosion. The relationship between the stress corrosion cracking resistance and microstructure of the 2091 alloy sheet is opposite to the above. The more the fibrous structure is, the higher the threshold value of stress corrosion cracking.
 

Chemical Composition of 2091

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Li

Zn

Ag

Ti

Zr

Others

Al

Each

Total

2091

0.20

0.30

1.8~2.5

0.1

1.1~1.9

0.1

1.7~2.3

0.25

0.20~0.70

0.1

0.04~0.16

0.05

0.15

Remainder

The fatigue properties of 2091 T84 alloys are at least not lower than that of 2024 alloy materials. In general, the chemical milling of 2091 alloys and the properties of surface treatment (anodic oxidation, chemical conversion and membrane removal) are equivalent to those of 2024 and 7075 alloys. But the salt spray test shows that the protective performance of the oxide film of the 2091 alloy is much stronger than that of the traditional alloy.

 

Alloy	Alloy Series	Main features	σb  Value /MPa	Working Temperature/ºC
2091	Al-Cu-Li-Mg-Zr	Compared with 2024 T3, the heat treatment strengthened alloy has a 8% reduction in density and a 7% increase in elastic modulus. It can be used as an aircraft structural part with lower strength and toughness and partially replace 2024 T3 alloy. The variety has thin plate and thick plate, its performance changes with the state.	-	<100

 

Physical Property of 2091 aluminum lithium alloy sheet plate
Thickness/mm	Longitudinal performance			Long transverse performance				45º direction performance
	RP0.2/MPa	Rm/MPa	A/%	RP0.2/MPa		Rm/MPa	A/%	RP0.2/MPa	Rm/MPa			A/%
(prEN 6003)
0.79~3.45	265	364	10	265		384	10	236	350			15
3.45~6.0	334	418	8	290		418	10	256	364			15
(prEN 6005)
0.81~3.3	290	394	10	295	408		10	265		379	15
3.3~6.0	359	448	8	325	359		10	285		398	15
6.0~12	359	448	8	325	359		10	285		398	15
12~40	354	438	7	320	423		8	275		394	13