Neodymium Magnet(also know as NdFeB, NIB or Neo Magnet), the most widely used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron and boron to form the ND2Fe14B tetragonal crytaline structure. Neodymium magnets are the strongest type of permanent magnet made. They have replaced other types of magnet in the many applications in modern produces that require strong permanent magnets, such as motors in cordless tools, hard disk drives and magnetic fasteners. Magnetic property of Neodymium Magnet Grade Remanence Br Coercive Force Hcb Intrinsic Coercive force Hci Max Energy Product (BH) max Max Working Temp. KG T KOe KA/m KOe KA/m MGOe KJ/m ºC °F N35 11.4-11.8 1.18-1.28 ≥ 10.8 ≥ 836 ≥ 12 ≥ 955 33-36 263-287 80 176 N38 11.8-12.3 1.18-1.28 ≥ 10.8 ≥ 860 ≥ 12 ≥ 955 36-39 287-310 80 176 N40 12.7-12.9 1.27-1.29 ≥ 11.0 ≥ 876 ≥ 12 ≥ 955 38-41 303-326 80 176 N42 12.9-13.3 1.29-1.33 ≥ 10.5 ≥ 836 ≥ 12 ≥ 955 40-43 318-342 80 176 N45 13.3-13.8 1.33-1.38 ≥ 9.5 ≥ 756 ≥ 12 ≥ 955 43-46 342-366 80 176 N48 13.8-14.2 1.38-1.42 ≥ 10.5 ≥ 835 ≥ 12 ≥ 955 46-49 366-390 80 176 N50 13.8-14.5 1.38-1.45 ≥ 10.5 ≥ 835 ≥ 11 ≥ 955 47-51 374-406 80 176 N52 14.3-14.8 1.43-1.48 ≥ 10.8 ≥ 860 ≥ 11 ≥ 876 50-53 398-422 80 176 33M 11.4-11.8 1.14-1.18 ≥ 10.3 ≥ 820 ≥ 14 ≥ 1114 31-33 247-263 100 212 35M 11.8-12.3 1.18-1.23 ≥ 10.8 ≥ 860 ≥ 14 ≥ 1114 33-36 263-287 100 212 38M 12.3-12.7 1.23-1.27 ≥ 11.0 ≥ 876 ≥ 14 ≥ 1114 38-41 303-326 100 212 40M 12.7-12.9 1.27-1.29 ≥ 11.4 ≥ 907 ≥ 14 ≥ 1114 38-41 303-326 100 212 42M 12.8-13.2 1.28-1.32 ≥ 11.6 ≥ 923 ≥ 14 ≥1114 40-43 318-342 100 212 45M 13.2-13.8 1.32-1.38 ≥ 11.8 ≥ 939 ≥ 14 ≥ 1114 43-46 342-366 100 212 48M 13.6-14.0 1.36-1.40 ≥ 11.8 ≥ 939 ≥ 14 ≥ 1114 46-49 366-390 100 212 50M 14.0-14.5 1.40-1.45 ≥ 13.0 ≥ 1033 ≥ 14 ≥ 1114 48-51 382-406 100 212 30H 10.8-11.4 1.08-1.14 ≥ 10.2 ≥ 812 ≥ 17 ≥ 1353 28-31 223-247 120 248 33H 11.4-11.8 1.14-1.18 ≥ 10.6 ≥ 844 ≥ 17 ≥ 1353 31-33 247-263 120 248 35H 11.8-12.3 1.18-1.28 ≥ 11.0 ≥ 876 ≥ 17 ≥ 1353 33-36 263-287 120 248 38H 12.3-12.7 1.23-1.27 ≥ 11.2 ≥ 890 ≥ 17 ≥ 1353 36-39 287-310 120 248 40H 12.7-12.9 1.27-1.29 ≥ 11.5 ≥ 915 ≥ 17 ≥ 1353 38-41 303-326 120 248 42H 12.8-13.2 1.28-1.32 ≥ 12.0 ≥ 955 ≥ 17 ≥ 1353 40-43 318-342 120 248 45H 13.2-13.5 1.32-1.38 ≥ 12.0 ≥ 955 ≥ 17 ≥ 1353 42-46 335-366 120 248 46H 13.3-13.8 1.33-1.38 ≥ 12.2 ≥ 972 ≥ 16 ≥ 1274 44-47 350-374 120 248 48H 13.6-14.3 1.36-1.43 ≥ 12.5 ≥ 995 ≥ 16 ≥ 1274 46-49 366-390 120 248 30SH 10.8-11.4 1.081.14 ≥ 10.0 ≥ 796 ≥ 20 ≥ 1672 28-31 223-247 150 302 33SH 11.4-11.8 1.14-1.18 ≥ 10.5 ≥ 836 ≥ 20 ≥ 1672 31-34 247-276 150 302 35SH 11.8-12.3 1.18-1.23 ≥ 11.0 ≥ 876 ≥ 20 ≥ 1672 33-36 263-287 150 302 38SH 12.3-12.7 1.23-1.27 ≥ 11.4 ≥ 907 ≥ 20 ≥ 1972 36-39 287-310 150 302 40SH 12.5-12.8 1.25-1.28 ≥ 11.8 ≥ 939 ≥ 20 ≥ 1972 38-41 302-326 150 302 42SH 12.8-13.2 1.28-1.32 ≥ 11.8 ≥ 939 ≥ 20 ≥ 1672 40-43 320-343 150 302 45SH 13.2-13.8 1.32-1.38 ≥ 12.6 ≥ 1003 ≥ 20 ≥ 1592 43-46 342-366 150 302 30UH 10.8-11.4 1.08-1.14 ≥ 10.2 ≥ 812 ≥ 25 ≥ 1990 28-31 223-247 180 356 33UH 11.3-11.7 1.13-1.17 ≥ 10.7 ≥ 852 ≥ 25 ≥ 1990 31-33 247-263 180 356 35UH 11.7-12.1 1.17-1.21 ≥ 10.7 ≥ 852 ≥ 25 ≥ 1990 33-36 263-287 180 356 38UH 12.1-12.5 1.21-1.25 ≥ 11.4 ≥ 907 ≥ 25 ≥ 1990 36-39 287-310 180 356 40UH 12.5-12.8 1.25-1.28 ≥ 11.4 ≥ 907 ≥ 25 ≥ 1990 38-41 302-326 180 356 28EH 10.5-10.8 1.05-1.08 ≥ 9.5 ≥ 756 ≥ 30 ≥ 2388 26-29 207-231 200 392 30EH 10.8-11.4 1.08-1.14 ≥ 9.5 ≥ 756 ≥ 30 ≥ 2388 28-31 223-241 200 292 33EH 11.3-11.7 1.13-1.17 ≥ 10.2 ≥ 812 ≥ 30 ≥ 2388 31-33 247-263 200 392 35EH 11.7-12.1 1.17-1.21 ≥ 10.2 ≥ 812 ≥ 30 ≥ 2388 33-36 263-287 200 392 38EH 12.1-12.5 1.21-1.25 ≥ 11.4 ≥ 907 ≥ 30 ≥ 2388 36-39 287-310 200 392 30AH 10.8-11.3 1.08-1.13 ≥ 10.2 ≥ 812 ≥ 35 ≥ 2785 28-32 223-255 220 428 33AH 11.2-11.7 1.12-1.17 ≥ 10.2 ≥ 812 ≥ 35 ≥ 2785 31-34 247-271 220 428 Some important properties used to compare permanent magnets are: Remanence(Br). Which measures the strength of the magnetic field; Coercivity (Hci), the material's resistance to becoming demagnetized; Energy product(BHmax), the density of magnetic energy; And Curie temperature(TC), the temperature at which the material loses its magnetism. Neodymium magnets have higher remanence, much higher coercivity and energy product, but often lower Curie temperature than other types. Neodvmium is alloved with terbium and dysprosium in order to preserve its magnetic properties at high temperatures. The table below compaes the magnetic performance of neodymium magnets with other types of permanent magnets. Neodymium magnet Application of neodymium magnet: Magnets are found in almost all modern objects. The computer hard drive Most modern mobile phones now include a small neodymium magnet or two. Like computer compenents magnets have gradually become small and smaller making them easy to integrate into most industrial manufacturing processes. We also find that a lot of model and jewelley makers like our magnets as they fit easily into their models and allow parts to be easily removed and re-attached. For lifting. Holding, separating, and retrieving, we have the right magnetic assemblies and permanent magnetic materials for all types of industrial, OEM and commercial applications. Our expertise and ability to develop customized solutions will match the correct magnet for your application.