1325Mechanical EngineeringMedium
Tensile strength of steel can be safely in-creased by________?
Aadding small quantities of copper
Badding copper and carbon
Cadding carbon up to 0.83%
Dadding carbon up to 6.3%
Eadding carbon up to 2.8%
Correct answer
C. adding carbon up to 0.83%
Explanation
The correct answer is adding carbon up to 0.83%.