Thanks for sharing the first link. Having worked in subsea for a number of years and co-ordinating a lot of material testing QA/QC, I'm always on the lookout for such cases.

It blows my mind why she thought the testing requirements were "stupid". For those unfamiliar, subsea testing requirements set a high-bar (pun intended) because failure in operation is simply not an option. From my non-expert understanding, testing at such low temperatures is not just an order of magnitude factor thing for simulating the operating temperature of the environment, it actually helps put the material in a state to check for other things when under test (maybe increased pressure?). Steel intended for subsea use is not your everyday stuff, apart from it's role in distributing forces, corrosion resistance is designed into the alloy through other elements and the resulting structure (often normalised), to perform even after impact.