When did 2117 rivets first appear?

[twalter]

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 until the 1980's....

Now I'm stumped as to when they first appeared commercially (admitted 2324 has been out for a few years, but it pretty much a Boeing item only).

 

[dgapilot]

AD rivets (2117 T4)have been around for as long as we've been building aluminum aircraft. The old designation for 2117 was A17S. Hope this helps.

 

[twalter]

dgapilot - thank you.

My Metallurgy Book is dated, and has the temperature vs phase diagrams of common aluminum alloys except 2117.

Looking for the 2117 diagram for heat treating, I've got 2017 and 2024... but no luck in finding the one for 2117.

Any pointers appreciated!

 

[swall]

My 1979 edition of "Aluminum Standards and Data" from the Aluminum Association lists the 2117-T4 rivet alloy.

 

[twalter]

swall. I found the A17S references and also pulled out some old handbooks... including a 1958 Alcoa book on riveting. Yes, it was in there. Just odd as my old Metallurgy Book didn't make any reference of it, so I started wondering when it first appeared.

 

[dgapilot]

A quick search shows A17S referenced in NACA Reports from 1941, so they've been around at least that long. I was looking for an old copy of AN470, AN426, AN454 or other rivet drawing, but couldn't put my hands on one.