- The Magnetic Sticker on Refrigerator is Single-sided Magnet
- What Is Length-to-diameter Ratio (L/D)?
- The Information Needed for the Customization of Magnets
- What is the Magnetism of Ball Magnets like
- Temperature Effects on Neodymium Iron Boron, NdFeB, magnets
How to Choose Permanent Magnet Materials
Each permanent magnet material discussed above has its own pros and cons. How to choose the right one for your particular application is a challenge to any user. A balance between cost and performance must be considered in selecting of permanent magnet material. In Reference Information section of this page, several reference books are listed. These books may be helpful to you in designing and selecting permanent magnet materials. Following is a Comparison Table to help you select a right permanent magnet material for your applications.
Permanent Magnet Material ComparisonTableNote: The data listed in the table are for reference only
|Material||Cost Index||Maximum Energy Products
|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|