ASNT NDT Level III MT Practice Questions - ASNT NDT Level III Magnetic Particle Testing (MT) Exam

The residual method of magnetic particle testing is generally appropriate for which class of materials?

Low-carbon steels with low retentivity High-permeability soft iron with negligible Br Hardened or quenched-and-tempered steels with sufficient retentivity Austenitic stainless steels

Correct Answer:

Hardened or quenched-and-tempered steels with sufficient retentivity

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