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How Steel changed the course of history

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Caleb Gilbert

on 8 May 2014

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Transcript of How Steel changed the course of history

How did Steel change the course of history
While early Human societies used stone, wood and iron. It was steel that fueled the Industrial Revolution and built modern city's. Evidence of steel tools dates back about 4000 years ago . After the invention of the Bessemer Process in the 1850s. Steel then exploded into one of the biggest industry's on the planet and was used in the creation of everything from bridges to railroads to skyscrapers and engines. It was particularly influential in North America where massive iron ore deposits helped it become one of the worlds biggest economy's.
Bibliography
http://www.history.com/news/history-lists/11-innovations-that-changed-history
http://en.wikipedia.org/wiki/Bessemer_process
http://en.wikipedia.org/wiki/Steel#Historical
http://www.ask.com/question/what-is-in-steel
http://www.answers.com/topic/steelmaking
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Traditional Steel making.
Older processes
Bethlehem Steel in Bethlehem, Pennsylvania was one of the world's largest manufacturers of steel before its 2003 closure.

The earliest means of producing steel was in a bloomery. Early modern methods of producing steel were often labour-intensive and highly skilled arts. In which the German finery process could be managed to produce steel. Blister steel and crucible steel.

An important aspect of the industrial revolution was the development of large-scale methods of producing forge able metal (bar iron or steel). The puddling furnace was initially a means of producing wrought iron, but was later applied to steel production.

The real revolution in steel making only began at the end of the 1850s. The Bessemer process was the first successful method of steel making in quantity, followed by the open hearth furnace.

Modern processes

Modern steel making processes are broken into two categories: primary and secondary steel making. Primary steel making uses mostly new iron to make it, usually from a blast furnace. Secondary steel making uses scrap steel as the primary raw material. Gases created during the production of steel can be used as a source of power.


Historic Steel uses.
Before the introduction of the Bessemer process and other modern production methods Steel used to be a very expensive material to use and was only used when no cheaper material was available. Particularly for things like the cutting edge on knifes, razors or swords and other items where a hard, sharp edge was needed. It is also used in springs like the ones on watches.
What is Steel?
Steel is an alloy of mostly iron and carbon. Steel with increased carbon content can be made harder and stronger than iron, but such steel is also less adaptive than iron. Today, steel is one of the most common materials in the world, with more than 1.3 billion tons produced every year.
How Steel changed the course of history
Steel Making
The Bessemer Process
The Bessemer process was the very first inexpensive industrial method for mass-production of steel from molten pig iron. The method is named after its inventor, Henry Bessemer. This process was used for hundreds of years.
Made by Caleb Gilbert!
Glossary
Adaptive - Able to change to suit the environment.
Bloomary - Metalworking. a hearth for smelting iron in blooms of pasty consistency by means of charcoal.
Steel
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