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by bell-cot 733 days ago
Answer I: Real-world materials are vastly more complex than "it's titanium, or it's not". Not that our craptastic modern educational system teaches such things, unless you're taking specialized engineering courses or technical training. For a skim, see: https://en.wikipedia.org/wiki/Metallurgy

Answer II: In theory, the headline should have said something like "Components which had falsified documentation to assert that they fully complied with Aerospace Engineering Specifications [long list of cryptic technical specification codes here] for Titanium...". But, outside of Ph.D.-authored articles in the (fake name) Journal of Aerospace Engineering Research, that's not how mass-market modern journalism works.