NdFeB Rare Earth Magnets:
Rare Earth Magnets are including Neodymium(Nd) -Iron(Fe)-Boron(B) types and Samarium(Sm)- Cobalt(Co) classes. The most commonly produced material is neodymium-iron-boron (NdFeB). This group of magnetic materials provides the highest available magnetic energies of any material. NdFeB magnets allow small shapes and sizes with high magnetic fields. Energy product range from 28 MGOe to about 52 MGOe. ndfeb, ndfeb magnet, sintered ndfeb

Super-Strength Rare Earth Magnet----Sintered NdFeB magnets, have the characteristics of :

*Extreme strong Br Resident induction.

*Excellent demagnetization resistance capability.

*Good Price relative to its high magnetic properties.

*Coating is needed for NdFeB

Surface Treatment Method: Type Information

Metallic Zinc, Nickel, Nickel+Nickel, Copper+Nickel, Nickel+Copper+Nickel,

Gold, Organic Epoxy, Nickel+Epoxy coating

Temporary Surface: Passivation

Both NdFeB and SmCo are available in sintered as well as bonded forms. Sintered NdFeB parts however, will produce the highest magnetic properties. NdFeB is sensitive to heat and should not be used in the environments that exceed 200^oC. Bonded NdFeB are generally low in properties due to the special process of gluing the powder in a mold. The bonded form of the material can be produced with close tolerance off tools with little or no finishing required. The sintered form usually some finishing operations in order to hold close mechanical tolerances. ndfeb, ndfeb magnet

MAGNETIC AND PHYSICAL CHARACTERISTICS (NdFeB)

No. TYPE Remanence Br Coercive-force bHc Intrinsic coercive force iHc Max. energy product (BH) max Working Temperature KGs T KOe KA/m KOe KA/m MGOe KJ/m³ 0C   1 N-35 11.7-12.1 1.17-1.21 10.8-11.5 860-915 ≥12 ≥955 33-35 263-279 ≤80 2 N-36 11.9-12.2 1.19-1.22 10.8-11.5 860-915 ≥12 ≥955 34-36 271-287 ≤80 3 N-38 12.2-12.6 1.22-1.26 10.8-11.5 860-915 ≥12 ≥955 36-38 287-303 ≤80 4 N-40 12.6-12.9 1.26-1.29 10.5-11.0 836-876 ≥12 ≥955 38-40 303-318 ≤80 5 N-42 12.9-13.2 1.29-1.32 10.5-11.0 836-876 ≥12 ≥955 40-42 318-334 ≤80 6 N-43 13.0-13.3 1.30-1.33 10.5-11.0 836-876 ≥12 ≥955 41-43 326-342 ≤80 7 N-45 13.3-13.7 1.33-1.37 10.5-11.0 836-876 ≥12 ≥955 43-45 342-358 ≤80 8 N-48 13.6- 14.2 1.36 1.42 926 11.6 876 11.0 ≥12 ≥955 45-48 358-382 ≤80 9 N-50 14.1-14.5 1.41-1.45 11-11.4 828-907 ≥11 ≥876 48-50 382-398 ≤70 10 N-52 14.4-14.8 1.44-1.48 10.5-11.4 828-907 ≥11 ≥876 49.5-52 394-414 ≤70 11 N-35M 11.7-12.1 1.17-1.21 10.8-11.5 860-915 ≥15 ≥1194 33-35 263-279 ≤100 12 N-36M 11.9-12.2 1.19-1.22 11.1-11.6 884-923 ≥15 ≥1194 34-36 271-287 ≤100 13 N-38M 12.2-12.6 1.22-1.26 10.8-11.5 860-915 ≥14 ≥1114 36-38 287-303 ≤100 14 N-40M 12.6-12.9 1.26-1.29 10.8-11.5 860-915 ≥14 ≥1114 38-40 303-318 ≤100 15 N-42M 12.9-13.2 1.29-1.32 10.8-11.4 860-907 ≥14 ≥1114 40-42 318-334 ≤100 16 N45M 13.3-13.7 1.33-1.37 10.8-11.4 860-907 ≥17 ≥1114 43-45 334-358 ≤100 17 N48M 13.6-14.2 1.36-1.42 11.4-12 907-905 ≥14 ≥1114 45-48 358-382 ≤100 18 N-30H 10.8-11.2 1.08-1.12 10.1-10.6 804-844 ≥17 ≥1353 28-30 223-239 ≤120 19 N-33H 11.4-11.7 1.14-1.17 10.6-11.1 844-884 ≥17 ≥1353 31-33 247-263 ≤120 20 N-35H 11.7-12.1 1.17-1.21 10.8-11.5 860-915 ≥17 ≥1353 33-35 263-279 ≤120 21 N-36H 11.9-12.2 1.19-1.22 11.1-11.6 884-923 ≥17 ≥1353 34-36 271-287 ≤120 22 N-38H 12.2-12.6 1.22-1.26 11.5-12.0 915-955 ≥17 ≥1353 36-38 287-303 ≤120 23 N-40H 12.6-12.9 1.26-1.29 11.5-12.0 915-955 ≥17 ≥1353 38-40 303-318 ≤120 24 N-42H 12.9-13.2 1.29-1.32 11.5-12.0 915-955 ≥17 ≥1353 40-42 318-334 ≤120 25 N-44H 13.3-13.6 1.33-1.36 11.4-11.9 907-947 ≥16 ≥1274 42-44 334-350 ≤110 26 N-30SH 10.8-11.2 1.08-1.12 10.1-10.6 804-844 ≥20 ≥1592 28-30 223-239 ≤150 27 N-33SH 11.4-11.7 11.4-11.7 10.6-11.1 844-884 ≥20 ≥1592 31-33 247-263 ≤150 28 N-35SH 11.7-12.1 1.17-1.21 10.8-11.5 860-915 ≥20 ≥1592 33-35 263-279 ≤150 29 N-38SH 12.1-12.5 1.21-1.25 10.8-11.5 860-915 ≥20 ≥1592 36-38 287-302 ≤150 30 N-40SH 12.6-12.9 1.26-1.29 10.8-11.5 860-915 ≥20 ≥1592 38-40 303-318 ≤150 31 N-42SH 13-13.3 1.30-1.33 11.4-11.9 907-947 ≥19 ≥1512 40-42 318-314 ≤140 32 N28UH 10.4-10.8 1.04-1.08 9.8-10.2 780-812 ≥25 ≥1990 26-28 207-223 ≤180 33 N30UH 10.8-11.2 1.08-1.12 10.1-10.6 804-844 ≥25 ≥1990 28-30 223-239 ≤180 34 N35UH 11.7-12.1 1.17-1.21 10.5-11.2 836-890 ≥25 ≥1990 33-35 263-278 ≤180 35 N38UH 12.2-12.6 1.22-1.26 11.4-11.9 907-947 ≥25 ≥1990 36-38 287-303 ≤180 36 N28EH 10.4-10.8 1.04-1.08 9.8-10.2 780-812 ≥30 ≥2388 26-28 207-223 ≤200 37 N30EH 10.8-11.2 1.08-1.12 10.1-10.6 804-844 ≥30 ≥2388 28-30 223-239 ≤200 38 N33EH 11.4-11.7 1.14-1.17 10.3-11.0 820-876 ≥30 ≥2388 31-33 247-263 ≤200 39 N35EH 11.7-12.1 1.17-1.21 10.8-11.4 860-907 ≥30 ≥2388 33-35 263-279 ≤200

Remark: The above mentioned data of magnetic and physical characteristics are given at room temperature ** The open flux irreversible loss of the testing sample at this temperature≤5%