A reverse image search on the CT scans gave me this tweet with some more images and this video including a short section showing some 3d rotations of the CT scans
Aluminium is aluminium. It's hardness doesn't change "if magnetism is applied".
AFAIK it's not magnetic at anything near STP because it doesn't have unpaired electrons like ferrous metals do.
"Measurements aren't precise due to its changing fields" reeks of being a hoodwinker's excuse for not providing real data.
If it's aluminium, its properties should be (relatively) easy to measure. Aluminium's properties are very well understood.
Aluminium's really useful, but it isn't magical.
And, like the claimed implants of Maussan's mummies, despite the implied extraterrestrial origin of the sphere Maussan and his confederates/ backers have somehow forgotten to do an isotopic analysis, which might provide evidence of an alien origin.
Or not, if it's been made on Earth.
Aluminium is much used in the aerospace industry- but not for the most heated surfaces of vehicles re-entering the Earth's atmosphere I don't think, and not for the leading edges of the fastest jets.
However, it is readily available and quite a lot cheaper (and easier to work AFAIK) than e.g. titanium, so maybe more appealing to a hoaxer on a budget whose potential audience won't ask awkward questions.
I guess we can't be sure that Feminist Love Letter is quoting Maussan, or tweeting with his approval?
Either way, I think we can be fairly confident that this is clearly bunk, with F.L.L. and/ or Maussan (or an associate) using "sciencey" terms that don't make sense to describe the team's "findings".
Can't help but think of the phrase "Not even wrong",
https://en.wikipedia.org/wiki/Not_even_wrong
(although I suspect the claims made for the sphere would be easily falsifiable if impartial, competent investigators were allowed access).