Do airport metal detectors detect aluminum?

Metals such as iron, nickel and cobalt are detected by passive and active metal detectors. Other metals, such as copper, brass and aluminum, are detected only by active means.



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Below are metals that a metal detector cannot detect:
  • Stainless Steel. Stainless steel is an alloy of iron and chromium. ...
  • Titanium. Titanium is a useful, strong, corrosion-resistant, and lightweight alloy. ...
  • Ceramic Ferrite Magnets. Ordinary magnets contain either iron or iron combined with copper, cobalt, or neodymium.


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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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TSA uses millimeter wave advanced imaging technology and walk-through metal detectors to screen passengers. Millimeter wave advanced imaging technology safely screens passengers without physical contact for metallic and non-metallic threats, including weapons and explosives, which may be concealed under clothing.

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Common metals that will set off an airport metal detector include iron, steel, nickel, copper, brass, aluminum, and titanium. Other metals, such as gold and silver, will not typically set off a metal detector, but they may be detected by X-ray or other security screening methods.

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Currently, there are no regulations in security screening for those who has implants including plates, screws, nails and joint replacement in their body.

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Objections to TSA Body Scanners Primary concerns include: Health Risks. Full body scanners emit some radiation.

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