Jan 01, 2014 · Steel is a generally hard, strong, durable, malleable alloy of iron and carbon, usually in the range 0.03–0.20 wt% carbon, often with other constituents such as manganese, chromium, nickel, molybdenum, copper, tungsten, cobalt or silicon, depending on the desired alloy properties and applications. Steel exists in three main stable crystal forms:
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