7050 aluminium alloy

Aluminium zinc alloy

Aluminium 7050 alloy is a heat treatable alloy. It has high toughness, high strength. It has high stress corrosion cracking resistance. ^[1] It has electric conductivity of value having 40 percent of copper.^[2] 7050 aluminium is known as a commercial aerospace alloy.^[3]

Chemical Composition

Element^[1]	Content (%)
Aluminum, Al	89
Copper, Cu	2.3
Magnesium, Mg	2.3
Zinc, Zn	6.2
Zirconium, Zr	0.12

Physical Properties

Properties^[1]	Metric
Density	2.6-2.8 g/cm3
Melting point	494°C
Tensile strength	515 MPa
Yield strength	455 MPa
Fatigue strength	240 MPa
Elastic modulus	70-80 GPa
Poisson's ratio	0.33
Elongation	11%
Thermal conductivity	180 W/mK

Designations

It can be written as:^[1]

AMS 4108
AMS 4201
ASTM B247
ASTM B316
QQ A-430

Welding

Welding should be avoided, because it weakens aluminum alloy. ^[2]

Applications

Aircraft and other structures^[1]
Fuselage frames^[2]
Bulkheads^[2]
Wing skins^[3]
Military aircraft applications^[3]

References

^ ^a ^b ^c ^d ^e "Aluminum 7050 alloy properties". 31 August 2012. Archived from the original on 2020-09-18.
^ ^a ^b ^c ^d "Aluminum 7050". Archived from the original on 2016-03-28.
^ ^a ^b ^c "7050 aluminum" (PDF). Archived (PDF) from the original on 2021-01-07.

External links

For more properties, visit: http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MA7050T765
Aluminum 7050 properties for different thickness https://www.aircraftmaterials.com/data/aluminium/7050.html