4 x 2 mm Neodymium N52 Magnets Strong Strongest DIY Craft Fridge Disc Magnet
Strong Rare-Earth magnets - once they get stuck with each other, they are hard to break apart.Can also be used to extend protected lithium batteries with recessed contact points.Electrically conductive (making them suitable to extend recessed batteries).Perfect for sticking notes on fridge doors.Great for do-it-yourself projects , modelling , clothing .
These Magnets are used in numerous applications requiring strong, compact permanent magnets, such as electric motors, hard drives, magnetic hold downs, jewelry clasps, crafts and power generation (wind & hydro turbines). They have a high magnetic field strength and have a high coercivity (which makes them magnetically stable).
The magnets have a curie temperature of 80 degrees Celsius. They are plated to protect them from corrosion.
They are brittle by nature and break easily if allowed to slam into each other or any other item for that matter.
Pacemakers and Defibrillators
Pacemakers and defibrillators can be sensitive to strong magnetic fields. If you or someone in your household has a pacemaker or defibrillator, or has health issues which require that you wear electronics of any sort, avoid magnets completely until you consult your doctor!
Pinch and Eye Hazard
Strong magnets can pose a serious pinch hazard due to their attractive force on each other and to any metal object containing iron. Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening. Though small magnets are quite safe in this respect, larger sizes are strong enough that they can pinch you like a pair of pliers or worse, and be very difficult to remove from your fingers without help. They are strong enough that they can fly into each other or to a piece of iron or steel with such velocity that they can break and send sharp 'shrapnel' flying about! Plus, your expensive magnets are then permanently broken. ALWAYS use a strong grip and zen-like concentration when handling large magnets, and wear safety goggles. Some people wear gloves when handling them, this is at your option. Glove may help prevent accidental blood blisters if the magnets snap together, but they may also compromise you firm grip.
Damage to magnetic storage media
Magnetic fields can cause damage to magnetic storage media. These include: cassette tapes, floppy disks, credit cards, video tapes, and computer hard drives. Keep all magnets at least 24 inches away from all types of magnetic media.
Damage to Electronics
Certain electronic devices are sensitive to magnetic fields and may be damaged permanently or temporarily disabled if exposed to a magnetic field that is too strong. Any CRT video screen or television will become distorted and/or discolored if exposed to a strong magnetic field. While damaged screens can usually be demagnetized, it's often tricky and may require qualified service technicians to do so. Other electronic devices like cellphones and pagers can also be damaged. Store your magnets in a safe place away from electronics of any kind.
Pregnant Women
Although there are no known health risks involving the handling of permanent magnets of the sizes we sell, just to be on the safe side we would advise pregnant women to avoid any exposure to strong magnetic fields.
Drilling and Machining
These magnets are by nature very hard and brittle. Although they can be cut, drilled and machined, it should ONLY be done by folks who are experienced with ceramics. If the magnets get over about 300 deg F, they will lose their magnetism permanently. They are flammable, and it is not difficult while grinding or machining to get them (or the chips and dusts from cutting) so hot hot they ignite. If they do ignite, the fumes are toxic and the material burns very fast and hot, like Magnesium!
Please be careful and be safe
