A technician measured the hardness of the steel bar two times. For the first time, he measured the hardness. He heated the steel bar to a high temperature and wait for the steel bar to decrease the temperature to room temperature. The technician measured the hardness of the steel bar again. (a) Did the technician get the same hardness in both measurements? Answer: (b) Please explain your point of view.

A technician measured the hardness of the steel bar two times. For the first time, he measured the hardness. He heated the steel bar to a high temperature and wait for the steel bar to decrease the temperature to room temperature. The technician measured the hardness of the steel bar again. (a) Did the technician get the same hardness in both measurements? Answer: (b) Please explain your point of view.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter25: Testing And Inspection

Section: Chapter Questions

Problem 39R: What information does a hardness test reveal?

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