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Oxygen Not Included Wiki
Oxygen Not Included Wiki
This article has not been revised for the current version (U35-479045). It was last updated for LU-356355. It may contain inaccuracies.
This article has not been revised for the current version (U35-479045). It was last updated for LU-356355. It may contain inaccuracies.

Ceramic is an advanced building material available in mid-game.


Ceramic, when used as a building material, will increase that building's overheat temperature by 200 °C and boosts adjacent decor by 20%. Notably, Ceramic has a very low thermal conductivity value which can dramatically slow heat transfer. Its also worth noting that tiles made of Ceramic can safely contain Magma, which is hot enough to melt most early game materials, with the exception of Obsidian.

The heat transferring between two objects uses the thermal conductivity value of the material that is lowest, which will likely be the Ceramic itself until Insulation can be reliably made.

Rock Crusher can break Ceramic into Sand. 100 kg Ceramic = 100 kg Sand. This is usually not advisable due to producing Ceramic is relatively harder than acquiring sand.

Building the Monument Midsection requires 2500 kg of Ceramic among other materials.


Kiln can produce Ceramic from Clay and Coal. 100 kg Clay + 25 kg Coal = 100 kg Ceramic.

  • This is faster and more practical than the other method, and does not require minding from the player. However, do know that Duplicants appear to prioritize "Supplying fabrication materials" tasks over other tasks of supposedly equal priority levels, so they will frequently move across the colony just to load the Kilns with Clay and Coal.
    • Hence, an Auto-Sweeper will be useful, or perhaps consider producing Ceramic only when there are no other urgent production or building tasks.

Heating Clay to 929.85 °C will also turn it into Ceramic.

  • This can be done with diagonal tile-building into squares just above Obsidian seams in Volcanic Biomes; the diagonal tile-building also pushes out the Ceramic. This, of course, requires frequent micro-management.
  • Automating with machines from the technologies about solid management is feasible, but that is near end-game tech and Ceramic is needed for mid-game endeavours. Auto-Sweepers for this purpose will also have to be exposed to the hot environs.
  • The resulting Ceramic will also be very hot, but building something with it will reset its temperature to 45°C, as per deliberate coding by the developers.

See Also[]