Magnetic particle testing requires the material to be magnetizable.

Magnetic particle testing requires the material to be magnetizable.

• A. True
• B. False
• C. Only nonferrous metals
• D. It can be used on any metal

Answer: (A)

Magnetic particle testing works by inducing a magnetic field in the part and using iron particles to visualize flux leakage at defects. This visualization only happens if the material can be magnetized. If the metal can’t be magnetized, there’s no magnetic leakage to attract the particles, so flaws won’t be indicated. That’s why the method hinges on the material being magnetizable, typically ferromagnetic metals like iron, nickel, or cobalt. Nonmagnetizable or nonferrous metals won’t show the same leakage pattern, and saying it can be used on any metal isn’t correct. So the statement is true.

Magnetic particle testing works by inducing a magnetic field in the part and using iron particles to visualize flux leakage at defects. This visualization only happens if the material can be magnetized. If the metal can’t be magnetized, there’s no magnetic leakage to attract the particles, so flaws won’t be indicated. That’s why the method hinges on the material being magnetizable, typically ferromagnetic metals like iron, nickel, or cobalt. Nonmagnetizable or nonferrous metals won’t show the same leakage pattern, and saying it can be used on any metal isn’t correct. So the statement is true.