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Devilsteel - stronger than plasteel walls

Are there parts of your colony you simply do not want to be destructed? Do you want your fort to be able to resist 500% threat scale?

You need Devilsteel, a simple to use and make material. Almost indestructable, but very expensive!
Almost 6 times stronger and six times as expensive, in fact

Lore:
Devilsteel is crafted by hitting Plasteel with a hammer while constanly treating it with Devistrand
As the Devilstrand slowly disintegrates it merges with the re-compacted Plasteel
The end product is re-compacted Plasteel, increased in mass, but decreased in size. It aquires a pinkish hue from the integrated Devilstrand, hence its name Devilsteel

Demo colony: https://rimworld.gallery/m/RimWorldPorn/t/527

Demo video: https://www.youtube.com/watch?v=g8ZJpfmAcAI

Details:
Devilsteel is made at a stonecutter's bench
Things made using Devilsteel have almost 6 times as many hitpoints compared to Plasteel. Only the toughest mechanoid weapon can breach a wall at 100% in one shot, sometimes

Balancing / avoiding OP numbers:
UPDATE: devilsteel can only be used on buildings and barricades
One devilsteel block costs 6 Plasteel and 6 Devilstrand
Devilsteel has to be crafted block by block and takes longer to produce than other blocks
Building using Devilsteel takes 6 times as long
Devilsteel's value is roughly 6 times higher than Plasteel
Devilsteel is very heavy, 8 times Plasteel, to prevent it being easily taken from other tiles