Cast iron

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Iron containing carbon in excess of its solubility in the austenite that exists in the alloy at the eutectic temperature. For the various forms--gray cast iron, white cast iron, malleable cast iron, and nodular cast iron--the word "cast" is often left out, resulting in the terms gray iron, white iron, malleable iron, and nodular iron, respectively. ASM, 1
Source: Dictionary of Mining, Mineral, and Related Terms

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