10 Very Strong Neodymium Block Magnets 20x10x5 mm

Pricing & History

Sold for
Start Free Trial or Sign In to see what it's worth.
Sold Date
Source eBay UK

10 Neodymium (NdFeB) Block Magnets 20 x 10 x 5mm Brand New, unused, in packaging This listing is for one pack of 10 Neodymium (NdFeB) 20 x 10 x 5 mm block magnets. Magnet Properties Length 20 mm (approx 0.78") Width 10 mm (approx 0.39") Depth 5 mm (approx 0.19") Material Grade N35 MGOe 35 Coating Ni-Cu-Ni (Nickel-Copper-Nickel) Weight (each) 7.4 grams Pull * (Pounds) 9.6 lb Pull * (Ounces) 154 oz Pull * (Grams) 4361 g Maximum temperature 80°C / 176°F *Pull is measured on a horizontal steel plate. To work out what the holding force would be on a vertical surface divide the pull by 4 They are magnetised axially through the depth. Neodymium (chemical symbol Nd) is element 60 on the periodic table. It’s a rare earth metal and forms one of the Lanthanides series. When added to Iron (Fe) and Boron (B) (chemical formula Nd 14 Fe 21 B) the resultant magnets are the strongest magnets currently available. Neodymium magnets are sometimes known as NdFeB, Neo, Neod or NIB magnets. Their uses are very varied but care must be taken because they are brittle if allowed to jump together, are normally only safe for use below 80°C/176°F although we do stock some high and extra high operating temperature magnets. The smaller magnets are often used for jewellery clasps, magnetic therapy jewellery, magnetic earrings (one each side of the ear), fridge magnets, model train connecters, motors, science projects etc. Larger magnets are used for science projects, actuators, separators, speakers, pumps, magnetic therapy and circuit breakers in power stations. Neodymium magnets are usually coated to prevent the iron from rusting. Normally this is a Nickel-Copper-Nickel plating, however, Zinc, Tin, Black Nickel, Gold and Silver plating are also used as are Epoxy resin and PTFE (better known under the brand name Teflon). The Gold and Silver plated magnets are often used to make homemade magnetic therapy jewellery; particularly using a number of spheres to make necklaces or bracelets. WARNING: NEODYMIUM MAGNETS ARE UNSUITABLE FOR UNDER 8 YEARS OLD DUE TO SIZE AND/OR STRENGTH Other sizes and quantities also available in our eBay shop Sign up for my email newsletters by adding my eBay Shop to your Favourites POSTAGE AND PACKING Please check out our Posting Policy . International Buyers If you are purchasing more than one item from us we will give a combined postage rate for those items which is based upon weight AND size. Please note that where items already have free postage, no further discount can be given on combined postage. Following the changes made by eBay on 22 September 2009, we have taken the decision to stop posting to selected international destinations. This is because of extensive problems we have experienced in shipping to these locations which has resulted in our having to subsidise the postage by sending all items by the tracked 'International Signed For' service. Buyers in these destinations are blocked from purchasing our listings. These destinations are: Afghanistan, Africa (all countries), Albania, Armenia, Azerbaijan, Bangladesh, Bhutan, Bulgaria, Croatia, Cyprus, Georgia, Greece, India, Italy, Kazakhstan, Korea (North and South), Kyrgyzstan, Maldives, Malta, Moldova, Mongolia, Nepal, Netherlands, Pakistan, Romania, Sri Lanka, Tajikistan, Turkey, Turkmenistan, Uzbekistan IMPORTANT - Payment instructions PAYPAL ONLY please read more

Items in the Price Guide are obtained exclusively from licensors and partners solely for our members’ research needs.

Flag item for content or copyright

If this item contains incorrect or inappropriate information please contact us here to flag it for review.

If you are the originator/copyright holder of this photo/item and would prefer it be excluded from our community, contact us here for removal.