Talk:Aluminium–lithium alloys

More info re: Airliners
The article currently states:

"They are currently used in a few commercial jetliner airframes".

I request that more info be provided here. Which jetliners are currently using Al-Li? Thanks,  Lester  23:53, 10 April 2008 (UTC)

solubility limit
The article currently states:
 * {| class="wikitable"


 * ''Commercial Al-Li alloys contain up to 2.45% lithium...
 * ''This effect works up to the solubility limit of lithium in aluminium...
 * }
 * }

So, what is the solubility limit of lithium in aluminum? Is 2.45 % the solubility limit of lithium in aluminum? Geo Swan (talk) 13:50, 14 May 2009 (UTC)


 * Well, I don't know if 2.45 % the solubility limit of lithium in aluminum, but I must tell that when the limity of solubility is crossed,no alloy is make. In the botton, we we will have aluminum, while lithium will be up. Agre22 (talk) 21:14, 20 October 2009 (UTC)agre22


 * I also think that if there's too much lithium in aluminum, the alloy can become too weak. Anything too much is bad. Agre22 (talk) 19:13, 25 December 2009 (UTC)agre22

Lighter but bigger?
I'm surprised to see the Li atom is bigger than the Al atom. Al has more electrons and I'd expect a wider radius therefore. How does that work? Midgley (talk) 10:55, 14 August 2009 (UTC)
 * See the atomic radius article for a periodic table of radii and a good explanation. --IanOsgood (talk) 21:15, 23 July 2010 (UTC)

Aplication as armor
Is any kind of Al-Li alloy used as an armor or to make a helmet?This site: [Key to metals] talks about this subject, but doesn't tells if Al-Li is being used ina commercial base.Agre22 (talk) 21:09, 20 October 2009 (UTC)agre22

Size of atoms ? lithium atom is larger than an aluminium one ?
the article says

"Strain hardening- The lithium atom is larger than an aluminium one"

really ? the lithium atom with 3 proton and 3 electrons on 2 shells is bigger than the aluminium atom with 13 protons and 13 electrons on 3 shells ? how is that even possible ? by redefining the definition of "largeness" for an atom ?

67.204.17.20 (talk) 10:40, 21 January 2011 (UTC)


 * Quite right, I removed the offending statement. Wizard191 (talk) 20:25, 21 January 2011 (UTC)


 * Just FYI, the lithium atom is larger than the aluminum atom. See the atomic radius article IanOsgood linked to earler. 24.130.82.66 (talk) 18:09, 26 November 2011 (UTC)


 * so should we reinstate, but with some ref to justify ? (& see 2009 comment "Lighter but bigger" above) - Rod57 (talk) 09:48, 22 March 2021 (UTC)

Should note many have more copper than lithium by mass
Should note many (the 2000 series) have more copper than lithium by mass. Can we explain why they are called Al-Li alloys ? & Are they all less dense than pure Al as implied by intro ? - Rod57 (talk) 10:00, 22 March 2021 (UTC)