A copper bar is a junk item in Fallout 4.
A solid ingot of copper.
A copper bar can be broken down into its individual components for use in crafting:
Copper bar (1)
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.