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Pick out the wrong statement about the machinability of metals. Machinability of a metal | |
A. | decreases with increase in strain hardening tendencies. [Wrong Answer] |
B. | decreases with increase in hardness, in general. [Wrong Answer] |
C. | depends on the composition, microstructure and physical & mechanical properties. [Wrong Answer] |
D. | decreases with increases in tensile strength & decrease in grain size. [Correct Answer] |