By which the structure of iron and steal is destroy?
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Steel is a metal alloy widely used in construction owing to its strength, affordability and hardness. Its various forms consist almost entirely of iron, but also contain the elements carbon, manganese, phosphorous, sulfur, silicon, and sometimes nickel and chromium.
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The bimetal corrosion cell can e.g. consist of a steel plate and a copper plate in electrical contact ... Differences in structure and grain size occur on the surface
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