Return to steel (idea)
|A Civilization advance.|
Developments in metallurgy lead to methods of producing steel. When a coal derivative called coke is blown through molten iron, the composition and properties of the metal change. Stronger, less brittle, and more resistant to corrosion than the iron from which it is made, steel was long the material of choice for warships, planes, and many other vehicles.
Prerequisites: Metallurgy and Industrialization.
Allows for: Automobile
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