Uncovering Treasures: Tips for Identifying Different Types of Metals While Detecting
Metal detecting is a fun and exciting hobby that can take you on adventures, uncovering treasures hidden underground. Whether you’re an experienced detectorist or just starting out, one critical skill to master is identifying different types of metals while detecting.
Knowing the type of metal in the ground can help you determine whether it’s worth digging up or not. Different metals also behave differently when subjected to various environmental factors like moisture and temperature, which can influence their decay rate. In this post, we’ll explore some tips for identifying different types of metals while detecting.
Ferrous vs. Non-Ferrous Metals
The first step in identifying metals while detecting is understanding the difference between ferrous and non-ferrous metals.
Ferrous metals are those that contain iron, including steel, cast iron, and wrought iron. These types of metal are magnetic and will often produce a strong signal on your metal detector. Ferrous metals tend to rust quickly when exposed to air and moisture.
Non-ferrous metals do not contain any iron and include copper, brass, aluminum, nickel silver (German silver), lead, tinplate (tin-coated steel), zinc (including galvanized steel), gold, silver & platinum group elements such as palladium. They are generally less magnetic than ferrous materials but can still be detected by most modern detectors at varying depths depending upon size/shape/proximity etc…These types of metal are generally more resistant to corrosion than ferrous materials.
Identifying Ferrous Metals
As mentioned earlier in this article ferromagnetic materials such as iron alloys like steel produce very strong signals on a detector so they tend to be easier identified with experience over time due simply being found more frequently however there are several ways you can confirm if what you have found is indeed Ferros:
1) Magnetic Properties – If your metal object responds strongly to a magnet then it’s likely made from Iron or Steel
2) Rust – If the object has significant amounts of rust, it’s most likely made from iron or steel
3) Weight – Iron and Steel are much heavier than other metals so if your find feels particularly heavy this could indicate that it is Ferrous.
Identifying Non-Ferrous Metals
Non-ferrous metals can be a little trickier to identify as they do not generally produce the same strong signals on detectors. However, there are a few things you can do to confirm what exactly you’ve found:
1) Conductivity – Most non-ferrous metals have high conductivity levels which mean they conduct electrical currents well. Using a metal detector that measures conductivity will help identify what type of metal you have found.
2) Color – Many non-ferrous metals such as copper, brass & bronze all have unique colors which makes identification easier.
3) Streak Test – If it is unclear by visual inspection alone whether an item is gold or pyrite for example you can use a streak test where rubbing the item against an unglazed porcelain tile will leave behind either an orangey-yellow streak (gold), or black/greenish-black streaks (pyrite).
Alloys
Alloys are mixtures of different types of metals and sometimes non-metals too. They’re commonly used in many everyday items like jewelry, coins and even cars so chances are when detecting you’ll come across them too!
The majority alloys contain more than one type of metal making them difficult to identify using general methods but some may react differently under certain conditions helping differentiate between them:
1) Density: Different alloys tend to weigh different amounts due to their unique composition ratios
2) Electrical Conductivity: Some Alloys conduct electricity better than others allowing for easy identification with modern detectors.
Conclusion
Learning how to identify different types of metals while detecting takes time and practice. By understanding the properties of ferrous vs non-ferrous materials, conducting basic tests such as streak tests and using modern metal detecting technology you’ll be able to identify a variety of metals with confidence.
Remember, the more experience you gain, the better you’ll become at identifying different types of metals. Happy hunting!