I remember reading "The Third Industrial Revolution" [0] in my childhood, which was a paean to all the different industrial processes that would be possible in space. One that I remember was alloys of metals with vastly different weights (lithium and lead, for example). In gravity it's hard to mix them perfectly because the heavier metal sinks, but that is not an issue in space.

Would be fun to read it again and see what predictions, if any, came true.

0: https://www.amazon.com/third-industrial-revolution-Harry-Sti...

This book captivated me as a child and explains many interesting possibilities about manufacturing in space: https://www.amazon.com/third-industrial-revolution-Harry-Sti...

All kinds of interesting processes become feasible in weightlessness. For instance, some kinds of alloys just aren't possible on earth because the metals' densities are so different that they don't mix properly. No so in space.