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Steelmaking - Wikipedia.
Today there are two major commercial processes for making steel, namely basic oxygen steelmaking, which has liquid pig-iron from the blast furnace and scrap steel as the main feed materials, and electric arc furnace EAF steelmaking, which uses scrap steel or direct reduced iron DRI as the main feed materials.
Steel - Wikipedia.
The Chinese of the Warring States period 403-221 BC had quench-hardened steel, 23 while Chinese of the Han dynasty 202 BC - AD 220 created steel by melting together wrought iron with cast iron, thus producing a carbon-intermediate steel by the 1st century AD.
Steel Simple English Wikipedia, the free encyclopedia.
For example, chromium can be added to make stainless steel, which does not rust easily, or boron can be added to make very hard steel that is also not brittle. Steel rope or cable, made of many thin steel wires.
steel Composition, Properties, Types, Grades, Facts Britannica.
As an indication of the relative importance of this material, in 2013 the worlds raw steel production was about 1.6 billion tons, while production of the next most important engineering metal, aluminum, was about 47 million tons. For a list of steel production by country, see below World steel production.

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