無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets
無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets - Image 2
無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets - Image 3
無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets - Image 4
無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets - Image 5
無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets - Image 6
無中重燒結釹鐵硼 Heavy Rare Earth Free Neodymium Magnets - Image 7
無中重稀土磁鐵Heavy Rare Earth Free Magnet

Heavy Rare Earth Free Neodymium Magnets

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Introduction

Sintered Neodymium Iron Boron (NdFeB) magnets offer high magnetic strength in a compact size. They are widely used in motors, electronic devices, industrial equipment, and other applications that require strong and reliable magnetic performance.

New Favor Industry provides a range of Dy-Free / Tb-Free sintered NdFeB magnets designed for applications that require high performance, thermal stability, and efficient material use.

To address heavy rare earth price volatility and supply risks, New Favor Industry has established a comprehensive line of HRE-Free Sintered NdFeB grades to meet diverse application requirements. These materials exclude Dysprosium (Dy), Terbium (Tb), and Gadolinium (Gd), instead leveraging grain refinement, grain boundary diffusion, and special heat treatment to maintain the high magnetic energy product characteristic of conventional NdFeB while achieving excellent coercivity and high-temperature performance. This technology effectively reduces material cost and supply uncertainty while avoiding risks related to rare earth regulations, offering a stable and competitive alternative.

HRE-Free Sintered NdFeB Magnets are ideal for industries requiring high supply stability. With an operating temperature range of 0°C to 150°C, they provide an optimal solution for consumer electronics, permanent magnet motors, and green energy technologies, enabling lightweight, high-efficiency designs with controlled cost.

Features

• High magnetic strength
• High coercivity and good resistance to demagnetization
• Stable magnetic performance
• Suitable for compact and lightweight product designs
• Designed for light, thin, short, and small products
• Available in discs, rings, blocks, sectors, tiles, and custom shapes

Operating Temperature

0°C～150°C

Applications

Heavy rare earth free neodymium magnets are widely used in applications requiring high magnetic performance while ensuring environmental sustainability and supply chain stability:

• Consumer Electronics: Smartphones, computers, wireless earbuds, and other compact electronic devices.
• Industrial Tools:Precision measuring instruments, magnetic wrenches, and magnetic sockets.
• Motors & Drives:Industrial motors, pneumatic tools, and electric drive systems.
• HVAC, Refrigeration & Heat Pumps:Electronic expansion valves, stepper motors, heat pump compressors, and thermal management systems.
• Medical Devices:Diagnostic imaging equipment and surgical assistance tools.
• Renewable Energy & Power Generation:Wind turbines and renewable energy equipment.

To address global supply risks and cost volatility of heavy rare earth elements, we have fully launched our HRE-Free sintered NdFeB series. With guidance from our professional consulting team, these magnets deliver more stable and competitive performance and solutions to meet the needs of diverse applications.

HRE-Free Neodymium Product Performance Chart

Available grades include selected N, M, H, and SH series, depending on the required magnetic performance and operating temperature. For detailed magnetic properties, please refer to the specification table below or contact our technical team.

Br-KGs 11.4 11.9 12.3 12.7 13 13.4 13.8 14 14.2 14.4 14.6 14.8 15 Hcj(KOe) Hcj(KOe)
N Series N33 N35 N38 N40 N42 N45 N48 N50 N52 N54 N56 N58 N60 12 11
M Series N33M N35M N38M N40M N42M N45M N48M N50M N52M N54M N56M 15 14
H Series N33H N35H N38H N40H N42H N45H N48H N50H N52H N54H 17 16
SH Series N33SH N35SH N38SH N40SH N42SH N45SH N48SH N50SH N52SH 20 19
Mass Production Mass Production with lower Hcj Value Under Development

 

Advantages of HRE-Free Magnets
  • • Reliable Magnetic Performance
    Advanced material design and manufacturing processes help maintain high magnetic strength, coercivity, and thermal stability.
  • • Wide Range of Grades
    Unaffected by supply chain fluctuations, ensuring a steady and reliable delivery.
  • • No Dual-Use Rare Earth Export License Required
    Simplifies the export process and accelerates time to market.
  • • Sustainable development
    Reduces dependence on scarce resources and aligns with global environmental trends.
Key Technologies in HRE-Free Magnets
  • To overcome the performance challenges associated with eliminating medium and heavy rare earth elements, materials scientists and engineering teams apply a range of advanced technologies to enhance magnetic performance:
    • • Grain Boundary Diffusion (GBD)
      Grain Boundary Diffusion is used to improve coercivity and resistance to demagnetization. During the process, selected materials are applied to the magnet surface and diffused along the grain boundaries through controlled heat treatment. This helps improve magnetic performance while using material more efficiently.
    • • Grain Refinement
      Careful control of alloy composition, powder preparation, sintering, and heat treatment produces a fine and uniform microstructure. This helps improve coercivity, magnetic stability, and overall performance.
    • • Optimized Alloy Design
      Material composition can be adjusted to reduce the required amount of Dysprosium (Dy), Terbium (Tb), Gadolinium (Gd), and Holmium (Ho), depending on the required magnet grade and application.
      Different applications require different magnetic properties, operating temperatures, dimensions, coatings, and mechanical designs.
    • Not every HRE-Free magnet can deliver optimal performance for your product. Only through professional evaluation can successful implementation be ensured. Share your requirements with us to receive expert technical support.
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Sintered Neodymium ND Product Performance Chart

* HRE-Free Option Available

Property Grade Residual
Magnetization		 Coercive Force Intrinsic
Coercive Force		 Max. Energy
Product		 Operating
Temperature
型號   矯頑力 內稟矯頑力 最大磁能積   
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
G55SH 14.4-14.8 13.3 20 53-56 150