They were also quite good at processing Titanium, for example the monument to Yuri Gagarin in Moscow is made out of a Titanium alloy (the monument looks like superman, if you ask me).

They had to melt and cast titanium ingots in a vacuum oven, then assemble the components into the statue. This technique wasn't repeated very often, as far as i know.

https://en.wikipedia.org/wiki/Monument_to_Yuri_Gagarin

Also see the Russian wikipedia article for a better picture of the monument:

https://ru.wikipedia.org/wiki/%D0%9F%D0%B0%D0%BC%D1%8F%D1%82...