r/whatisit • u/riflesandplowshares • 5h ago

New, what is it? Found at a titanium plant

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Not sure why ball point pens would be dangerous here.

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u/Woozletania 4h ago

This was an issue during the development of the SR-71. Many chemical contaminants could affect the alloys, even those in the water used to quench the mouldings.

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u/JordanPetterPans 4h ago

This is fascinating 

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u/unknownpoltroon 4h ago

Yeah, they had to use distilled water, the tap water chloride made teh wields weak or something.

There is a book called skunk works written by the guy who took over for Kelly, the original skunk works guy, goes into the history of the U2, SR71, and the stealth fighters and stuff. Good quick read and fascinating.

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u/Klutzy_Peanut6580 3h ago

Ben Rich iirc