#antimonial_lead__hard_lead  a lead alloy that contains about 5% antimony
  supertype:  Pb__lead__atomic_number_82  a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull gray; "the children were playing with lead soldiers"
  subtype:  grid_metal  a kind of hard lead that is used for grids in storage batteries

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