Neodymium iron boron neo nd fe b or neodymium magnets are made from an alloy containing amongst others the elements neodymium iron and boron nd fe b the nd fe b magnets are the strongest type of magnet commercially available these magnets can be bonded in place using structural adhesive and offer incredible performances through large air gaps they are triple coated nickel copper nickel for maximum protection against corrosion maximum operating temperature 100c