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Steel (Civ4)

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Steel - 2800 Beaker
Steel

A technology introduced in Vanilla
Required techs Iron Working & Chemistry
Leads to Railroad (with Steam Power)
Units enabled Cannon
Ironclad
Buildings enabled Drydock
Ironworks
Era Industrial
Notes

"Before that steam drill shall beat me down, I’ll die with my hammer in my hand."
-John Henry, The Steel-Driving Man

StrategyEdit

Steel enables you to build Cannon and Ironclads (with Steam Power). It also enables construction of the Drydock building and the Ironworks national wonder.

Civilopedia EntryEdit

The iron alloys produced up until about the 14th century were made by heating a mixture of iron ore and charcoal in a forge, then pounding the molten metal to drive out the impurities or "slag". Occasionally, the iron mixture would absorb more carbon, creating steel rather than wrought iron. Because steel proved to be less brittle and more resistant to corrosion than iron, techniques were developed to produce steel. Blowing a coal derivative called coke through molten iron did this. Most modern steel making utilizes the "blast furnace", developed by Henry Bessemer in 1855, to accomplish this task on a large-scale basis. The strength and other qualities of steel make it the material of choice for warships, planes, and many other vehicles.

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