neodymium(NdFeB) magnets, samarium cobalt(SmCo5, Sm2Co17)magnets, Alnico magnets, permanent rare earth magnets.
NCMag™ supplier of super huge rare earth(SmCo,NdFeB)cylinder magnets; manufacturer of large ring neodymium or ferrit disc magnets in china.

what's large ring magnet(SmCo, NdFeB, ferrit)? where's huge neodymium disc magnets manufacturer? how to buy big samarium cobalt block magnets?

The dimension of this N45 super large block magnet is 175*40*20mm. As you see from the picture, each two blocks are separated by thick separator because they are very powerful.

This block magnet is custom made for one of our customers for a test. We offered 14 pcs in 20 workdays. The magnets have won great reputation from our customer because of its great property and reasonable price. So don’t hesitate to contact us if you are looking for such a big magnetic block. Ring Magnets are magnets that are round in shape with a hole. The size of a ring is given by specifying the Outer Diameter x Inner Diameter x Thickness. Like discs, most rings are magnetized through their thickness so that the north pole is on one flat surface and the south pole is on the opposite flat surface. Ring magnets are a good choice when you want to bolt or screw the magnet in place. SmCo Magnet is permanent magnet composed of Sm, Co and other lanthanon. It has high BH, lower temperature factor and high temperature resistance. The temperature can reach at 350 degrees in its appliance. Meanwhile there is strong corrosion-resistance and oxidative stability. So SmCo magnet don't need plating treatment generally and are widely applied in motor, meter, sensor, detector, engine, radar and other high-tech areas.

neodymium magnets, SmCo magnets, Alnico magnets
Material Cost Index (BH)max(MGOe) Coercivity Hci(KOe) (°C) Machinability
Nd-Fe-B(sintered) 65% Up to 45 Up to 30 180 Fair
Nd-Fe-B (bonded) 50% Up to 10 Up to 11 150 Good
Sm-Co (sintered) 100% Up to 30 Up to 25 350 Difficult
Sm-Co (bonded) 85% Up to 12 Up to 10 150 Fair
Alnico 30% Up to 10 Up to 2 550 Difficult
Hard Ferrite 5% Up to 4 Up to 3 300 Fair
Flexible 2% Up to 2 Up to 3 100 Excellent
Total 6 NdFeB magnets, samarium cobalt magnets, Alnico magnets
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