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wrought iron:see ironiron,
metallic chemical element; symbol Fe [Lat. ferrum]; at. no. 26; at. wt. 55.845; m.p. about 1,535°C;; b.p. about 2,750°C;; sp. gr. 7.87 at 20°C;; valence +2, +3, +4, or +6. Iron is biologically significant.
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a commercial iron obtained through old production methods directly from iron ore or pig iron. The spongy masses of iron (blooms) formed in a furnace or hearth consists of iron crystals of high purity mixed with a certain quantity of uniformly distributed liquid slag. Upon extraction from the furnace or hearth, the hot bloom is subjected to forging or rolling, as a result of which the slag is ejected and the iron crystals are fused. Wrought iron has excellent mechanical properties, for example, malleability, corrosion resistance, and weldability. By the 1950’s wrought iron had been almost entirely replaced by steel.