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Railways NTPC (Technical Ability) Materials Science Question Bank Materials Science

  • question_answer
    Consider the following treatments:
    1. Normalizing               
    2. Hardening
    3. Martempering            
    4. Cold working.
    Hardness and tensile strength in austenitic stainless steel can be increased by:

    A) 1, 2 and 3                     

    B) 1 and 3

    C) 2 and 4            

    D) 4 alone

    Correct Answer: D

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