What sets off metal detectors?

Airport metal detectors are quite sensitive to metals, this includes metal implants that may have been placed inside your body. Belt buckles, key chains, and steel-toed shoes may set off these sensitive metal detectors. Many commonly used orthopedic implants may also set off the metal detectors.



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If the person is carrying any metal objects, the metal will disrupt the magnetic field or the electromagnetic field. This disruption will cause a classic metal detector circuit to set off an alarm.

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Ferrous metals are magnetic metals like steel and iron. These are the easiest to detect. Non-ferrous metals are copper, aluminum, brass and bronze. And finally, stainless steel metals such as: 302, 304 and 316 are the hardest to detect.

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