Addition of small amount of ________________ to grey cast iron is done to produce nodular grey cast iron ?
Correct answer: C. Magnesium
- A. Manganese
- B. Phosphorous
- C. Magnesium
- D. Chromium
Explanation
Magnesium changes the graphite from flakes into rounded nodules, producing nodular or ductile cast iron. Manganese, phosphorus and chromium may alter other properties but do not provide the required spheroidising treatment.
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