Sintered Neodymium Magnet

Introduction

Sintered neodymium magnets, also known as sintered NdFeB magnets, are the best choice for high-end commercial motors due to their high energy and shape variety.

In spite of its outstanding performance, the sintered neodymium magnet is vulnerable to corrosion and high temperature. For prevention of corrosion, it needs a protective coating which is commonly a three-layer coating composed of Ni-Cu-Ni. To deal with the issue of heat, heavy rare earth elements are added to promote the temperature tolerance of sintered neodymium magnets.

 

Features

• Diverse shapes and sizes, such as discs, rings, squares, sectors, tiles, irregular shapes, etc.
• Powerful magnetic properties
• High magnetic energy output
• High coercivity
• Excellent magnetic stability
• Surface coated for protection
• Designed for light, thin, short, and small products
• Common coatings: nickel-copper-nickel, blue-white zinc, colorful zinc, black epoxy

工作‌溫度

0°C～240°C

Applications

• Mobile phones
• Computers
• Wireless headphones
• Precision instruments
• Magnetic wrenches
• Magnetic copper sleeves
• Electric motors
• Motors
• Pneumatic tools
• Medical equipment
• Wind power generation
• Green energy products

Sintered Neodymium Magnet

Property Grade Residual
Magnetization		 Coercive Force Intrinsic
Coercive Force		 Max. Energy
Product		 Operating
Temperature
            
Unit Br (kG) bHc( KOe) iHc(KOe) BHmax. (MGOe) °C
min. min. max.
N28EH 10.4-10.9 9.8 30 26-29 200
N30UH 10.8-11.3 0.5 25 28-31 180
N30EH 10.8-11.5 10.2 30 28-31 200
N30AH 10.8-11.5 10.2 35 28-31 240
N33SH 11.3-11.7 10.6 20 31-34 150
N33UH 11.4-12.1 10.6 25 31-34 180
N33EH 11.4-12.1 10.8 30 31-34 200
N33AH 11.4-12.1 10.7 35 31-34 240
N35 11.7-12.2 10.9 12 33-36 80
N35M 11.7-12.2 10.9 14 33-36 100
N35H 11.7-12.2 11 17 33-36 120
N35SH 11.7-12.4 11 20 33-36 150
N35UH 11.7-12.4 11 25 33-36 180
N35EH 11.7-12.4 11 30 33-36 200
N35AH 11.6-12.3 10.9 35 33-36 240
N38 12.2-12.5 11.3 12 36-39 80
N38M 12.2-12.5 11.3 14 36-39 100
N38H 12.2-12.5 11.3 17 36-39 120
N38SH 12.2-12.9 11.7 20 36-39 150
N38UH 12.2-12.9 11.5 25 36-39 180
N38EH 12.2-12.7 11.5 30 36-39 200
N38AH 12.2-12.5 11.4 35 36-39 240
N40 12.5-12.8 11.6 12 38-41 80
N40M 12.5-12.8 11.6 14 38-41 100
N40H 12.5-12.8 11.8 17 38-41 120
N40SH 12.6-13.1 11.9 20 38-41 150
N40UH 12.6-13.1 11.8 25 38-41 180
N40EH 12.4-13.1 11.8 30 38-41 200
G40AH 12.6-13.1 11.4 35 38-41 240
N42 12.8-13.2 11.6 12 40-43 80
N42M 12.8-13.3 12 14 40-43 100
N42H 12.8-13.3 12.5 17 40-43 120
N42SH 12.8-13.4 12.1 20 40-43 150
N42UH 12.8-13.4 12 25 40-43 180
N42EH 12.8-13.2 12 30 40-43 200
G42AH 12.8-13.4 11.4 35 40-43 240
N45 13.2-13.8 11 12 43-46 80
N45M 13.3-13.8 12.5 14 43-46 100
N45H 13.3-13.8 12.7 17 43-46 120
N45SH 13.3-13.7 12.5 20 43-46 150
N45UH 13.1-13.6 12.2 25 43-46 180
G45EH 13.0-13.6 12.6 30 43-46 200
N48 13.8-14.2 10.5 12 46-49 80
N48M 13.8-14.3 12.9 14 46-49 100
N48H 13.8-14.3 13 17 46-49 120
N48SH 13.7-14.3 12.6 20 46-49 150
G48UH 13.7-14.3 13 25 46-49 180
G48EH 13.7-14.3 13 30 46-49 200
N50 14-14.5 10.8 12 48-51 80
N50M 14-14.5 13 14 48-51 100
N50H 14-14.5 13 17 48-51 120
G50SH 14-14.5 13 20 48-51 150
G50UH 14.0-14.5 13 25 48-51 180
N52 14.3-14.8 10.8 12 50-53 80
N52M 14.3-14.8 13 14 50-53 100
G52H 14.1-14.7 13.2 17 50-53 120
G52SH 14.3-14.5 13.2 20 51-54 150
N55 14.7-15.3 10.8 11 52-56 80
G55H 14.4-14.8 13.3 17 53-56 120
N55 14.4-14.8 13.3 20 53-56 150
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