Steel production – additional information
The process of fabricating steel has been a common practice in several cultures for hundreds of years. There are many different types and grades of steel that are usually composed of some combination of iron and carbon. The addition of various alloys, such as manganese, nickel, or copper determines the properties of each grade. These additional elements and the heat treatment used to manipulate steel also affect its properties. In recent years, excavators found evidence of steel production in eastern Africa and India dated as early as 300 BC. Steel is widely used in building construction, infrastructure development and other applications.
Since 2009, annual iron and steel manufacturing in the United States had increased from more than 70 billion U.S. dollars in revenue to 101 billion U.S. dollars in 2014. One of the largest steel producers in the United States is the North-Carolina-based Nucor Corporation. In the fiscal year of 2016, the steel producer employed around 23,900 people worldwide. In a global comparison of crude steel producers, Nucor was ranked fourteenth in 2015, producing around 19.62 million metric tons of crude steel.
Over the last several years, the global production of crude steel has experienced consistent growth. Since 2003, annual crude steel production increased from 971.02 million metric tons to 1.63 billion metric tons in 2016 as demand increases worldwide.