The 'transition temperature' for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?
Correct answer: A. Carbon
- A. Carbon
- B. Manganese
- C. Both A nor B
- D. Neither A nor B
Explanation
Carbon raises the ductile-to-brittle transition temperature of steel by promoting harder, more brittle microstructures. Manganese generally lowers this transition temperature, so carbon is the required constituent.
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