Choosing a Rare Earth Magnet

To describe two types of magnetic material, the term rare earth magnet is a generic name used:  neodymium iron boron and samarium cobalt.  Utilizing rare earth elements, both of these magnetic alloys as the magnetic constituents lend themselves to specific applications. They offer characteristics of both material types.

By Sumitomo and General Motors Specialty Metals, neodymium magnets were developed over 30 years ago in response to the rising cost of samarium cobalt.  Neodymium iron boron from Magnet Factory in China since its inception has undergone a numerous enhancements, and this material is the most widely used and popular magnet alloy today. 

It’s also crucial to know that covering the production of sintered neodymium iron boron magnets, there are hundreds of patents.  The neodymium iron boron supplied is compliant to all applicable patents and licensed.

To use relatively small amounts of magnetic alloy, this physical property allows designers when compared to other magnetic materials.  Although might suggest for all applications, choosing a high strength neodymium magnet is the best choice, which is suggested by the smaller magnets and increased savings associated with neodymium. 

To withstand corrosion may cause substandard performance and premature failure ignoring important characteristics such as the magnet’s ability or operating temperature. When the rigors of the application demand it, Alternative high temperature grades of neodymium iron boron and various surface treatments are available.

Between neodymium iron boron and samarium cobalt, there are few similarities Other than the fact that both are called rare earth magnets. When integrating samarium cobalt magnets with a given application Due to these physical engineers, designers and characteristic must exercise great care. 

Samarium cobalt from other magnet materials also sets itself apart because it can function at high temperatures up to 662°F.  For high temperature / high strength applications, Samarium cobalt is often the rare earth magnet alloy of choice.