Each item in Minecraft has a unique ID assigned to it, known as an item ID, this can be used in commands to spawn the item into the game. The item ID for chainmail chestplate in Minecraft is shown below:
Items from earlier versions of Minecraft were assigned a numerical ID - a unique number to represent it.
The numerical ID for Chainmail Chestplate is:
The Chainmail Chestplate item can be spawned in Minecraft with the below command. Cheats must be enabled before this will work.
Chainmail chestplates can be found in dungeons in Minecraft. Chainmail armor is slightly weaker than iron, and cannot be crafted.