Which one has the maximum tensile strength out of the following ?
Correct answer: A. Nodular cast iron
- A. Nodular cast iron
- B. Pig iron
- C. White cast iron
- D. Grey cast iron
Explanation
Nodular cast iron contains graphite in rounded nodules, which disturb the metal matrix less than the flakes in grey iron and give much higher tensile strength. Grey and white cast irons are more brittle, while pig iron is a crude furnace product rather than the strongest option here.
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