In the category of axially magnetized neodymium cylindrical (rod) magnets, 15x100mm is definitely a very long size. The magnetic strength of N35 cylinder neodymium magnet 15x100mm is about 8.2 kg. You can customize higher grade to obtain stronger pull force. The anti-corrosion coating commonly used for 15x100mm long neodymium cylinder (rod) magnets is nickel-copper-nickel. Such super strong long magnetic rods can be used for scientific research.
Remanence(Br): The remanence range of neodymium rod magnets 15x100mm is 11700-12200 Gauss.
Coercivity（Hcj）: The coercivity of cylindrical neodymium magnets 15x100mm is over 12 Koe.
Magnetic Energy Product(BHmax): The BH-max range of 15x100mm neodymium rod magnets is 33-36 MGOe.
Max.Working Temp.: 15x100mmm cylindrical neodymium magnets N35 should be used at temperatures within 80 degrees Celsius.
Coating Available: Zinc, Nickel,Teflon, Epoxy,Plastic,Rubber...are available for the longer cylindrical neodymium magnets.
Axially(poles on two ends)
approx. 8.2 kg
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