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Steel is an alloy composed of between 0.2 and 2.0 percent carbon, with the balance being iron. From prehistory through the creation of the blast furnace, iron was produced from iron ore as wrought iron, 99.82–100 percent Fe, and the process of making steel involved adding carbon to iron, usually in a serendipitous manner, in the forge, or via the cementation process.
And the Wolf Finally Came: The Decline of the American Steel Industry (1988) excerpt and text search; Hogan, William T. Economic History of the Iron and Steel Industry in the United States (5 vol 1971) monumental detail; Ingham, John N. The Iron Barons: A Social Analysis of an American Urban Elite, 1874-1965 (1978) Krass, Peter. Carnegie (2002).
Its usefulness for multi storey buildings ensured it remained popular for all kinds of industrial and commercial structures, as well as supports for balconies in theatres and even in churches, up until it was finally replaced by steel in about 1900. Cast iron was also taken up by some architects in the early 19th century where smaller supports ...
The United States is also a major importer of iron and steel, as well as iron and steel products. Employment as of 2014 was 149,000 people employed in iron and steel mills, and 69,000 in foundries. The value of iron and steel produced in 2014 was $113 billion. [2] About 0.3% of the US population is employed by the steel industry. [3]
Commercial Metals Company (CMC), headquartered in Irving, Texas, is a producer of rebar and related products for the construction industry. Along with Nucor, it is one of two primary suppliers of steel used to reinforce concrete in buildings, bridges, roads, and infrastructure in the U.S. The company also owns Tensar, a producer of foundation ...
A roll of steel wool. Iron and steel are used widely in the construction of roads, railways, other infrastructure, appliances, and buildings. Most large modern structures, such as stadiums and skyscrapers, bridges, and airports, are supported by a steel skeleton. Even those with a concrete structure employ steel for reinforcing.
Iron Skillet: TCU players celebrate with the Iron Skillet after a 56-36 win over SMU at Amon G. Carter Stadium. TCU-SMU football history The Horned Frogs lead the all-time series between the in ...
Use of wrought iron in construction has a long history (cramps made from wrought iron were used in classical antiquity). [6] The first all-wrought iron roof was apparently installed in 1837 at the Euston railway station in London. [7] Frame of the Crystal Palace. Beams and girders were made of wrought iron with I-beam cross-section. The ...