Don’t the buyers test their shipments to assure the specs are met?
I think it’s pretty hard to test alloy content/chemical analysis after production.
Tensile and yield strength testing is relatively easy, but involved. You should be able to trust your supplier.
For some attributes, sure. But chemical composition is not commonly re-assayed, and "statistical" statements about properties (that is, the amount of variation in a lot or over time) are also reported or promised, and it is considerably more difficult to disprove those claims.
I'm not saying Kobe lied about chemical composition (maybe they did, I just don't know the details), just using that as an example.
Really, name a gov contractor that doesn’t wink at inspections for the bottom line! This is why there is mandatory ethics training at gov contractors. But some boards of directors have a policy that states they will be ethical in all dealings globally unless the BOD vote to change the rules for themselves and their CEO.
Search gov contractor ethics policies.