#wrought_iron__wroughtiron  iron having a low carbon content that is tough and malleable and so can be forged and welded
  supertype:  Fe__iron__atomic_number_26  a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood
  substance:  pig_iron
  subtype:  Swedish_iron  wrought iron of high purity made in Sweden

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