Q. The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about (Solved)
1. 0.20%
2. 0.40%
3. 0.60%
4. 1.40%
5. None of the above
- c. 0.60%
1. 0.20%
2. 0.40%
3. 0.60%
4. 1.40%
5. None of the above