[Warning: I am running version 1.4.1 but looking at the changelogs it's not fixed but this is just in case.]
The steel armor from Industrial Revolution is uncraftable and if you use the one from Astromine, it doesn't work.

Clicked the steel armor for looking at the craft

Also is there even a wiki for this mod ? I can't find it anywhere...
Edit: Found it.

Not craftable in 1.5.1 too.

This is a bug in industrial revolution that will be fixed in an upcoming update of theirs.