7050 aluminium alloy explained
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.
Chemical Composition
| Element | Content (%) |
|---|
| Aluminum, Al | 89 |
| Copper, Cu | 2.3 |
| Magnesium, Mg | 2.3 |
| Zinc, Zn | 6.2 |
| Zirconium, Zr | 0.12 | |
Physical Properties
| Properties | 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:
- AMS 4108
- AMS 4201
- ASTM B247
- ASTM B316
- QQ A-430
Welding
Welding should be avoided, because it weakens aluminum alloy.
Applications
- Aircraft and other structures
- Fuselage frames
- Bulkheads
- Wing skins[3]
- Military aircraft applications
References
- Web site: 31 August 2012. Aluminum 7050 alloy properties. live. https://web.archive.org/web/20200918142213/https://www.azom.com/article.aspx?ArticleID=6650 . 2020-09-18 .
- Web site: Aluminum 7050. live. https://web.archive.org/web/20160328093918/http://continentalsteel.com/aluminum/grades/alloy-7050/ . 2016-03-28 .
- Web site: 7050 aluminum. live. https://web.archive.org/web/20210107134118/https://www.smithmetal.com/pdf/aluminium/7xxx/7050.pdf . 2021-01-07 .
Further reading
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
