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Corroded Metal, aka rust, is a block in Build A Boat For Treasure. It is slightly better than Wood, but will still break easily. They are usually found in Common to Rare chests. This block is rarely used since it makes boats look ugly and deteriorating.


  • This block may also refer to real life rust, where an oxidation forms due to iron reacting with oxygen, causing metal to color brown or orange.
  • Blocks touched by the polluted water in the Industrial Terrain gain the rust texture, and look like Corroded Metal. This does not affect the hitpoints of the block, only its appearance.