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What is the correct answer?

4

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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