How to distinguish between iron and steel?
Wrought iron: comparison of pure iron with refined iron. The carbon content below 0.02%, also known as iron, iron. Cooked iron is very soft, good plasticity, good ductility, can pull into a wire, the strength and hardness is low, easy forging and welding.
The difference between iron and steel: iron into pig iron and wrought iron. Wrought iron, steel and cast iron is an alloy of iron and carbon with the carbon content difference. Generally less than 0.2% carbon content that wrought iron or iron, the content of 0.2-1.7% in the steel, is iron content of more than 1.7%. Soft wrought iron, good plasticity, easy deformation, strength and hardness were lower, not widely used; iron carbon, hard and brittle, almost no plastic; steel pig iron and wrought iron with two kinds of advantages, widely used for human.
Steel is a general term for an iron carbon alloy with a mass fraction of carbon between 0.02% and 2.06%. The chemical composition of steel can have great changes, only the carbon steel is called carbon steel (carbon steel) or ordinary steel; in actual production, steel tend to use different with different alloy elements, such as manganese, nickel, vanadium and so on. Man has a long history of application and research of steel, but until the nineteenth Century, the manufacture of steel was a costly and inefficient work before the invention of the bainite steel process. Nowadays, steel has become one of the most widely used materials in the world because of its low price and reliable performance. It is an indispensable component of the construction industry, manufacturing industry and people's daily life. It can be said that steel is the material base of modern society.
