N52 12mm x 5mm x Hole 4mm Ring Rare Earth Neodymium Magnet
Neodymium Features:
Neodymium (chemical symbol Nd) is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthanides series. When added to Iron (Fe) and Boron (B) (chemical formula Nd14Fe21B) the resultant magnets are the strongest magnets currently available. Neodymium magnets are sometimes known as Neo, Neod or NIB magnets.
Neodymium magnets are usually coated Nickel-Copper-Nickel plating to prevent the iron from rusting.
Neodymium magnets are made of a brittle material. These magnets are not as strong as steel.  They are more like a brittle ceramic.  If you let two magnets slam together, they can crack and break. This is true for magnets large and small.  
Neodymium Magnets Specifications
Shape Ring
Grade N52 (maximum strength)
Dimensions 12mm x 5mm Hole 4mm thick (approx. 1/2" x 3/16" thick Hole 5/32") - Tolerances ±0.2mm x ±0.2mm (0.02in)
Magnetization Direction Axial (Poles on Flat Ends)
Max Operating Tempetature 176ºF (80ºC)
Coating Ni-Cu-Ni (Nickel)
Warning Strong magnets should be Kept away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other. These magnets are very powerful which should be handled with great care. Without parents supervised do not allow children to playing magnets as they could get injured. Especially pay attention to the small magnets , please place in somewhere children can't reach place.

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N52 12mm x 5mm x Hole 4mm Ring Rare Earth Neodymium Magnet

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  • Views: 3094
  • Brand: NeoGauss®
  • Product Code: JCN52-RG12-5-H4
  • Availability: In Stock
  • $0.95
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Tags: 12mm 1/2" Diameter, 5mm 3/16" Thickness, Hole 4mm 5/32", N52, Ring