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Which of the following hardness testing method is preferred for aircraft manufacturing purposes?

Which of the following hardness testing method is preferred for aircraft manufacturing purposes? Correct Answer Rockwell hardness

The method of hardness testing usually preferred for aircraft manufacturing purposes is the Rockwell hardness method. This is because it is easy to operate and is reliable. Divider method is used to determine the yield point of a material. It is not a hardness testing method.

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