Bonded NdFeB Magnet

Bonded NdFeB Magnet is made of NdFeB magnetic powder and flexible. NdFeB (Neodymium) magnets have been found to provide superior magnetic properties, but the manufacturing process of sintered NdFeB does not allow greater flexibility in shape. Bonded NdFeB magnet can solve some dimensional accuracy and complex shape problems, but the magnetism will be weaker than sintered NdFeB magnets. The magnets are lighter than other metal magnets such as SmCo magnets. This magnetic material can provide a solution for many applications requiring small size and high precision.
 
 
At present, there are two production processes for bonded NdFeB magnets, compression molding magnets and injection molding magnets. Different processes can bring the same advantages in the production of different shapes or multi-pole requirements. Read the article for more information.

Application of Bonded NdFeB Magnet

Bonded NdFeB magnets are usually used in smaller products. Sensors in the automotive industry often use bonded neodymium magnets, especially in some applications due to the weak magnetic properties of alnico magnets, or due to issues such as manufacturing difficulties due to shape and multi-pole requirements, NdFeB magnets are used instead of AlNiCo magnets.
In other applications, bonded NdFeB is also used in many consumer electronics products, and it can help designers solve magnetic bending problems with complex shapes and complex functions compared with other magnetic materials such as AlNiCo or SmCo magnets.

PERFORMANCE TABLE OF BONDED NDFEB MAGNETS

GRADE

REMANENCE

Br

COERCIVE FORCE

Hcj

INTRINSIC COERCIVE FORCE

Hcb

 (BH)max HIGHEST WORKING TEMPERATURE Tw Average temperature coefficient of Br
T KGs KA/m KOe KA/m KOe kJ/ｍ³ MGOe ℃ %/℃
BNP-8L 0.60-0.64 6.0-6.4 715-800  9-10 360-400 4.5-5.0 56-64 7.0-8.0 110 -0.13
BNP-8 0.62-0.69 6.2-6.9 640-800 8-10 385-445 4.8-5.6 64-72 8.0-9.0 120 -0.13
BNP-8SR 0.62-0.66 6.2-6.6 880-1120  11-14 410-465 5.2-5.8 64-72 8.0-9.0 150 -0.13
BNP-8H 0.61-0.65 6.1-6.5 1190-1440  15-18 410-455 5.2-5.7 64-72  8.0-9.0 125 -0.07
BNP-9 0.65-0.70 6.5-7.0 640-800 8-10 400-440 5.0-5.5 70-76 8.8-9.5 120 -0.12
BNP-10 0.68-0.72 6.8-7.2 640-800 8-10 420-470 5.3-5.9 76-84 9.5-10.5 120 -0.11
BNP-11 0.70-0.74 7.0-7.4 680-800 8.5-10 445-480 5.6-6.0 80-88 10.0-11.0 120 -0.11
BNP-11L 0.70-0.74 7.0-7.4 520-640 6.5-8 400-440 5.0-5.5 78-84 9.8-10.5 110 -0.11
BNP-12L 0.74-0.80 7.4-8.0 520-600 6.5-7.5 420-455 5.3-5.7 84-92 10.5-11.5 110 -0.08
Injection Molding NdFeB BNI-3 0.2-0.4 2.0-4.0 480-640 6.0-8.0 120-240 1.5-3.0 8-24 1.0-3.0 100 -0.15
BNI-4 0.40-0.46 4.0-4.6 575-735 7.2-9.2 250-335 3.1-4.2 28-36 3.5-4.5 110 -0.13
BNI-5 0.45-0.51 4.5-5.1 640-800 8-10 280-360 3.5-4.5 37-44 4.6-5.5 120 -0.13
BNI-6 0.51-0.56 5.1-5.6 640-800 8-10 295-375 3.7-4.7 44-52 5.5-6.5 120 -0.11
BNI-6H 0.48-0.56 4.8-5.6 1035-1355  13-17 335-400 4.2-5.0 40-52 5.0-6.5 130 -0.15
BNI-7 0.54-0.64 5.4-6.4 640-800  8-10 320-400 4.0-5.0 51-59 6.5-7.5 120 -0.11
BNI-5SR (PPS) 0.45-0.50 4.5-5.0 875-1115 11-14 300-360 3.8-4.5 36-44 4.5-5.5 150 -0.13