Where to find cold iron bars?

[Law]

As per the heading. Some of the relics need these to be restored, and I can't find a vendor that sells them.

[SIlverblade-T-E]

iirc, you find a few as loot from difficult fights/areas :)

[Beewo]

know stauntons brother fight had one in a crate in his room

[Revan]

Just play the game, explore and loot and you eventually get them.