ASNT NDT Level II Practice Questions - ASNT NDT Level II Exam

Why is magnetic particle testing generally not used on aluminum parts?

Aluminum has too much electrical resistance for inspection current Aluminum is not ferromagnetic and cannot hold the required magnetic flux for MT Aluminum surfaces are always too rough for particle mobility Aluminum cannot be cleaned well enough for nondestructive testing

Correct Answer:

Aluminum is not ferromagnetic and cannot hold the required magnetic flux for MT

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