Broken Armor

Broken Armor is an item from unimplemented mechanic of metal armors getting destroyed during Iron Crisis, similar to how destroyed iron weapons end up being Broken Weapons.

From what can be found in game files, it was supposed to work on a same way as the mechanic behind weapon breaking, replacing a regular items with their broken equivalent. With initially rather high price of metal armors in-game, the lack of this mechanic certainly eases things up.

In-game description
"The iron crisis sweeping across the Sword Coast region seemingly knows no mercy. This suit of armor, once a prized possession, is no longer fit for even an xvart."