SomebodyInTLS wrote:I think he's trying to say that AlLi is just another aluminium alloy, like the typical 2024 and 7075 alloys (with added copper, magnesium, iron, chrome, etc.) used for most of the 20th century. I.e. AlLi can ALSO be referred to as "aluminium". Aircraft have never been made from *pure* aluminium...
What confused me was Aviation Week writing the 77X fuselage is constructed of standard aluminum.
It sounds like there's no such thing as standard aluminum. It would have been much clearer if they had simply stated the 77X fuselage is constructed of Al-Li.
I found an interesting article on the use of aluminum alloys in aircraft construction:
https://www.experimentalaircraft.info/a ... uminum.php