Jewellery Test Magnet
25mm dia x 35mm high Chrome Handled Jewellery Magnet - 11kg Pull
4200 Gauss
25mm dia x 35mm high Chrome Handled Jewellery Magnet - 11kg Pull
4200 Gauss
This strong Neodymium magnet makes the job of sorting through jewellery or other items quick and easy. Each magnet is strong enough to quickly attract items containing steel or other ferrous metal leaving behind precious metal items like gold or sterling silver.
Mounted on a long red handle with warning information ro prevent the magnet from being forgotten in a pocket.
How long will a neodymium magnet last?
Neodymium magnets are permanent magnets, and lose a fraction of their performance every 100 years if maintained within their optimum working conditions.
There are two factors which can shorten a magnet’s lifespan.
Heat
If the temperature of a magnet exceeds the maximum operating temperature (e.g. 80oC for N42 grade neodymium magnets), then the magnet will lose magnetism that will not be recovered on cooling. Samarium cobalt magnets are not quite as strong as neodymium magnets but they do have a much higher operating temperature of up to 350 degrees Celsius.
Corrosion
If the plating on a magnet is damaged and water can get inside, the magnet will rust and again this will result in a deterioration in magnetic performance. Samarium cobalt magnets and ferrite magnets are both resistant to corrosion but aren’t as strong as neodymium magnets.
F314N F314S - Performance Data Sheet.pdf
Neodymium (N42) - Material Safety Data Sheet.pdf
F314N F314S - Performance Data Sheet.pdf
Neodymium (N42) - Material Safety Data Sheet.pdf
