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The Junkers J1 was made from steel, some corrugated, some not, so it is just possible to make one fly. It was a real pig in the air, by all accounts.

Thanks. The Wikipedia page says that only one J1 was built.

I thought of https://en.m.wikipedia.org/wiki/Ford_Trimotor, corrugated but as you suspected, aluminum.

Perhaps most iconic: https://en.wikipedia.org/wiki/Junkers_Ju_52

Not sure about corrugated, but the Mig-25 was all stainless steel

The MiG-25 was constructed from 80% nickel-steel alloy, 11% aluminium, and 9% titanium according to source cited on wikipedia. https://en.wikipedia.org/wiki/Mikoyan-Gurevich_MiG-25#cite_n...