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[[File:mediumcarbonsteel1large.jpg|thumb|Medium carbon steel]] ...worked metal into an extremely hard brittle metal. Medium carbon (normal) steel contains between 0.2-0.6% carbon. It can be easily cast and forged into man

Steel is an alloy of [[iron]] with a small percentage of [[carbon]]. The amount ...3% carbon. It works well when heated to redness and is easily cast. Soft steel is used in construction and as a substitute for [[wrought iron]].