Which among the following is not a cast iron?(a) White iron(b) Compacted graphite iron(c) Gray cast iron(d) Pig ironI had been asked this question in an international level competition.The above asked question is from Classification of Foundry Metals and Alloys in section Foundry Introduction & Materials of Casting-Forming-Welding II

Which among the following is not a cast iron?(a) White iron(b) Compact

1.	Which among the following is not a cast iron?(a) White iron(b) Compacted graphite iron(c) Gray cast iron(d) Pig ironI had been asked this question in an international level competition.The above asked question is from Classification of Foundry Metals and Alloys in section Foundry Introduction & Materials of Casting-Forming-Welding II
Answer» Right option is (d) Pig IRON The best EXPLANATION: Among the FOLLOWING, white iron, COMPACTED cast iron and gray cast iron are different types of cast IRONS, but pig iron is not. It is from pig iron, that cast irons are made, by re-melting them.

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