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  1. twalter

    When did 2117 rivets first appear?

    My son is a ME at UTSA. We had a neat discussion about aluminum alloys and aging, and I pulled out my old Metallurgy Book from Cal Poly SLO. Well 2117 isn't even mentioned. His comment "wow, you really are old... " Darn kid! Flipped through some old books and seems 2117 rivets didn't appear...

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