What is the correct answer?


Pick out the correct statement.

A. Hot worked materials are subjected to annealing to remove internal stresses

B. Annealing of steel hardens it slightly

C. Normalising of a material induces stresses

D. Tempering of a material improves ductility & toughness but reduces hardness & brittleness

Correct Answer :

D. Tempering of a material improves ductility & toughness but reduces hardness & brittleness

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