What metals set off airport scanners?
When passing through airport security, you may wonder which metals can trigger the alarm on the scanners. Usually, airport scanners use a technology called millimeter-wave imaging or backscatter X-rays to detect objects hidden beneath clothing. These scanners are very effective at identifying metallic items concealed on a person. However, not all metals set off airport scanners. The ones that are most likely to be detected include:
1. Iron: Iron is a highly conductive metal and can easily trigger airport scanners. It is commonly found in various items such as keys, belt buckles, watches, and even some clothing accessories.
2. Steel: Similar to iron, steel is another metal that can be detected by airport scanners. Many everyday objects like jewelry, glasses frames, and medical implants contain steel components.
3. Titanium: Although titanium is a lightweight and non-magnetic metal, it is still easily detected by airport scanners because of its density. Titanium dental implants, jewelry, and accessories can set off the alarm.
4. Brass: Brass often contains a mixture of copper and zinc, two metals that easily trigger airport scanners. Belt buckles, keychains, zippers, and certain musical instruments like trumpets or saxophones can contain brass components.
5. Copper: Copper is a highly conductive metal frequently used in electrical wiring and plumbing. Items such as coins, jewelry, and even underwire bras may set off airport scanners due to their copper content.
6. Stainless steel: Commonly found in kitchen utensils, cookware, and jewelry, stainless steel is detectable by airport scanners due to its iron and chromium composition.
7. Aluminum: Aluminum is often used in lightweight objects like cans, foil, and certain types of jewelry. However, it is not always detected by airport scanners because it is less dense than other metals.
8. Nickel: Nickel is found in a wide range of objects such as jewelry, zippers, and belt buckles. Although it may set off airport scanners, sensitivity to nickel can vary among different detectors.
It’s important to note that not all metallic objects will necessarily set off airport scanners. The sensitivity and capabilities of scanners can vary, and the security personnel may focus on specific types of items that pose a potential threat.
Frequently Asked Questions:
1. Can gold set off airport scanners?
Gold is a non-ferrous metal, meaning it does not contain iron. Therefore, it is generally not detected by airport scanners. However, it’s worth noting that security protocols can vary, and if an item containing gold appears suspicious, additional screening may be required.
2. Do coins trigger airport scanners?
Coins, especially those made of copper or nickel, can often set off airport scanners. If you have a large amount of loose change, it is recommended to place it in your carry-on bag or pockets to avoid delays during the security process.
3. What about body piercings?
Metal body piercings like earrings or belly button rings are typically made of stainless steel, titanium, or nickel. These metals can trigger airport scanners, so it’s advisable to inform the security personnel about any piercings you have before going through the scanner.
4. Can dental fillings or implants set off the scanner?
Dental fillings or implants, which can be made of materials like silver amalgam, gold, or titanium, may trigger airport scanners. It is recommended to inform the security personnel about any dental work you have to ensure a smooth screening process.
5. Will aluminum cans in my bag trigger the scanner?
Aluminum cans, such as those containing beverages or food, are typically not detected by airport scanners. These items are made of lightweight aluminum, which is less dense and often goes unnoticed by the scanners.
6. What should I do if my jewelry sets off the scanner?
If your jewelry, such as rings, necklaces, or bracelets, triggers the scanner, you may be asked to remove it for further inspection. It’s a good idea to place your jewelry in a separate container or bag before going through security to accelerate the process if needed.
7. Can artificial joints or medical implants set off airport scanners?
Medical implants made of metals like titanium or stainless steel can definitely trigger airport scanners. It is advisable to carry a medical card or documentation from your doctor about the implants to facilitate the screening process.
8. Do prescription glasses set off the scanner?
Prescription glasses with metal frames, particularly those containing steel or other conductive metals, can trigger airport scanners. It is best to inform the security personnel about your glasses before proceeding through security.
Remember, airport security protocols may change, and different airports may use varying technologies and settings on their scanners. It’s always a good idea to comply with instructions from security personnel and be prepared to provide additional information about any alarming items or medical considerations you may have.
