Carbon dating real

Unlike copper and tin, liquid or solid iron dissolves carbon quite readily.All of these temperatures could be reached with ancient methods used since the Bronze Age.Steel is an alloy of iron and carbon and other elements.Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons. Iron is able to take on two crystalline forms (allotropic forms), body centered cubic (BCC) and face centered cubic (FCC), depending on its temperature.In the body-centred cubic arrangement, there is an iron atom in the centre of each cube, and in the face-centred cubic, there is one at the center of each of the six faces of the cube.It is the interaction of the allotropes of iron with the alloying elements, primarily carbon, that gives steel and cast iron their range of unique properties.Too little carbon content leaves (pure) iron quite soft, ductile, and weak.Carbon contents higher than those of steel make a brittle alloy commonly called pig iron.

In contrast, cast iron does undergo eutectic reaction.These qualities include such things as the hardness, quenching behavior, need for annealing, tempering behavior, yield strength, and tensile strength of the resulting steel.The increase in steel's strength compared to pure iron is only possible by reducing iron's ductility.Modern steel is generally identified by various grades defined by assorted standards organizations.These values vary depending on alloying elements such as manganese, chromium, nickel, iron, tungsten, carbon and so on.

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