Topic: Material Science
Which of the following has maximum hardness-
- A. Austenite
- B. Pearlite
- C. Troostite
- D. Martensite
Answer: D. Martensite
Explanation: The highest hardness of martensite is 700 (BHN) brinell whereas hardness of a pearlite steel is 400 (BHN) brinell.