In order to remove internal stresses produced by hardening the steel, the process usually adopted is
A. Tempering
B. Normalizing
C. Annealing
D. Spheroidizing
Answer: Option A
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Tempering is correct answer for this question.
Both Annealing & tempering are used for removing internal streess but in present question asked stress produced by hardening steel.
After hardening next operation will be the tempering to relieve the internal streess and balance the toughness and hardness.