Sintered Neodymium-iron-boron (NdFeB) Magnet
32Sintered Neodymium-iron-boron (NdFeB) Magnet4

Sintered Neodymium-iron-boron (NdFeB) Magnet

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Product Description

Sintered Neodymium-iron-boron (NdFeB) Magnet,also referred to as “neodymium magnet”, are made from Neodymium ,iron and boron. They are the most powerful magnet in the world. Neodymium magnet can
be made to blocks, discs, rings, arc segments, or a very small shape but with strong power. That means they can be used in more areas.
Neodymium magnets are prone to oxidation, so usually they need to be coated or plated to against oxidation.

Sintered Nd-Fe-B Magnetic Properties

GradeRemanence(Br)HcbHcj(BH)max.Woking Temperature
KGSTKOeKA/mKOeKA/mMGOeKJ/mMGOe 3L/D≥0.5(℃)
N3511.7-12.21.17-1.22≥10.9≥868≥ 12≥ 95533-36263-287≤80
N3812.2-12.51.22-1.25≥11.3≥899≥ 12≥ 95536-39287-310≤80
N4012.5-12.81.25-1.28≥11.4≥907≥ 12≥ 95538-41302-326≤80
N4212.8-13.21.28-1.32≥11.5≥915≥ 12≥ 95540-43318-342≤80
N4513.2-13.81.32-1.38≥11.6≥923≥ 12≥ 95543-46342-366≤80
N4813.8-14.21.38-1.42≥11.6≥923≥ 12≥ 95546-49366-390≤80
N5014.0-14.51.40-1.45≥12.0≥955≥ 11≥ 87648-51382-406≤80
N5214.3-14.81.43-1.48≥11.0≥876≥ 11≥ 87650-53398-422≤80
N5414.5-15.01.45-1.50≥11.0≥876≥ 11≥ 87652-55414-438≤70
35M11.7-12.21.17-1.22≥10.9≥868≥ 14≥ 111433-36263-287≤100
38M12.2-12.51.22-1.25≥11.3≥899≥ 14≥ 111436-39287-310≤100
40M12.5-12.81.25-1.28≥11.6≥923≥ 14≥ 111438-41302-326≤100
42M12.8-13.21.28-1.32≥12.0≥955≥ 14≥ 111440-43318-342≤100
45M13.2-13.81.32-1.38≥12.5≥955≥ 14≥ 111443-46342-366≤100
48M13.7-14.31.37-1.43≥12.9≥1027≥ 14≥ 111446-49366-390≤100
50M14.0-14.51.40-1.45≥13.0≥1033≥ 14≥ 111448-51382-406≤100
52M14.3-14.81.43-1.48≥13.1≥1043≥ 14≥ 111450-53398-422≤100
35H11.7-12.21.17-1.22≥10.9≥868≥ 17≥ 135333-36263-287≤120
38H12.2-12.51.22-1.25≥11.3≥899≥ 17≥ 135336-39287-310≤120
40H12.5-12.81.25-1.28≥11.6≥923≥ 17≥ 135338-41302-326≤120
42H12.8-13.21.28-1.32≥12.0≥955≥ 17≥ 135340-43318-342≤120
45H13.2-13.71.32-1.37≥12.3≥973≥ 17≥ 135343-46342-366≤120
48H13.7-14.21.37-1.42≥12.5≥995≥ 17≥ 135346-49366-390≤120
50H14.0-14.51.4-1.45≥12.6≥1003≥ 17≥ 135348-51382-406≤120
35SH11.7-12.21.17-1.22≥11.0≥876≥ 20≥ 159233-36263-287≤150
38SH12.2-12.51.22-1.25≥11.4≥907≥ 20≥ 159236-39287-310≤150
40SH12.5-12.81.25-1.28≥11.8≥939≥ 20≥ 159238-41302-326≤150
42SH12.8-13.21.28-1.32≥12.1≥963≥ 20≥ 159240-43318-342≤150
45SH13.2-13.81.32-1.38≥12.3≥979≥ 20≥ 159243-46342-366≤150
48SH13.7-14.31.37-1.43≥12.7≥1011≥ 20≥ 159246-49366-390≤150
28UH10.4-10.81.04-1.08≥9.6≥764≥ 25≥ 199026-29207-231≤180
30UH10.8-11.31.08-1.13≥10.2≥812≥ 25≥ 199028-3123-247≤180
33UH13.3-11.71.13-1.17≥10.7≥852≥ 25≥ 199028-31247-271≤180
35UH11.7-12.21.17-1.22≥10.8≥860≥ 25≥ 199033-36263-287≤180
38UH12.2-12.51.22-1.25≥11.3≥899≥ 25≥ 199036-39287-310≤180
40UH12.5-12.81.25-1.28≥11.8≥939≥ 25≥ 199038-41302-326≤180
42UH12.8-13.21.28-1.32≥12.1≥963≥ 25≥ 199040-43318-342≤180
45UH13.2-13.81.32-1.38≥12.3≥979≥ 25≥ 199043-46342-366≤180
28EH10.4-10.81.04-1.108≥9.8≥780≥ 30≥ 238826-29207-231≤200
30EH10.8-11.31.08-1.13≥10.2≥812≥ 30≥ 238828-31223-247≤200
33EH11.3-11.71.13-1.17≥10.5≥836≥ 30≥ 238831-34247-271≤200
35EH11.7-12.21.17-1.22≥11.0≥876≥ 30≥ 238833-36263-287≤200
38EH12.2-12.51.22-1.25≥11.3≥899≥ 30≥ 238836-39287-310≤200
40EH12.5-12.81.25-1.28≥11.6≥923≥ 30≥ 238838-41302-326≤200
42EH12.8-13.21.28-1.32≥11.7≥931≥ 30≥ 238840-43318-342≤200
28AH10.4-10.81.04-1.08≥9.9≥787≥ 33≥ 262426-29207-231≤230
30AH10.8-11.31.08-1.13≥10.3≥819≥ 33≥ 262428-31223-247≤230
33AH11.3-11.71.13-1.17≥10.6≥843≥ 33≥ 262431-34247-271≤230
35AH11.7-12.21.17-1.22≥11.0≥876≥ 33≥ 262433-36263-287≤230
38AH12.2-12.51.22-1.25≥11.3≥899≥ 33≥ 262436-39287-310≤230
40AH12.5-12.81.25-1.28≥11.6≥923≥ 33≥ 262436-39302-326≤230

Note: The above-mentioned data of magnetic parameters and physical properties are given at room temperature.The maximum working temperature of magnet is changeable due to length-diameter ratio, thickness and environment factors.
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Sintered Neodymium-iron-boron (NdFeB) Magnet

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Typical physical properties

ParameterUnitStandard
Curie Temperature310-380
αBr%/℃-0.09-0.13
βHcj%/℃0.35-0.80
Maximum Operating Temperature80-230
DensityG/cm3≥7.40-7.80
Vickers HardnessHV550-650
Bending strengthMpa250
Tensile strengthMpaMpa80
Compressive strengthMpa1050
Specific resistanceμΩ·cm150
Thermal conductivityW(m·k)6-8
Thermal expansion10-6/℃5-1.5

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