Neodymium Magnets
Neodymium Magnets
Neodymium Magnets
Neodymium Magnets
Neodymium Magnets
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Samarium Cobalt Magnets
Samarium Cobalt Magnet
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Pneumatic Hammer
Pneumatic Hammer

Neodymium Magnets

Neodymium Iron Boron (NdFeB), also known as Rare Earth Iron magnets are mainly comprised of iron, neodymium, boron and other trace elements is the strongest permanent magnets currently produced and has excellent magnetic properties, which allow this third generation magnetic material to be compact in size over traditional permanent magnets.

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Description

Neodymium Magnets Overview

Neodymium magnets, also known as NdFeB magnets, are composed of neodymium (Nd), iron (Fe), and boron (B) in a tetragonal crystalline structure. Renowned for their exceptional strength, they are one of the most widely used rare-earth magnets.

Applications and Characteristics of NdFeB Magnets

Applications

1. Electronics:

  • Found in hard drives, mobile phones, headphones, and battery-powered tools.
  • Provide high energy density and excellent magnetic performance, making them essential in modern industrial and electronic technologies.

2. Other Industries:

  • Machinery
  • Hardware
  • Toys
  • Packaging
  • Medical devices
  • Aerospace

Their versatility makes them indispensable for applications requiring compact and powerful magnets.

Types of NdFeB Magnets

1. Sintered NdFeB Magnets:

  • Require surface coatings (e.g., nickel, zinc, epoxy) to prevent corrosion.

2. Bonded NdFeB Magnets:

  • Exhibit magnetic properties in all directions.
  • Naturally resistant to corrosion.

These traits make NdFeB magnets ideal for applications demanding strong magnetic forces. However, their brittleness necessitates careful handling during use to avoid damage.

Product Guidelines: Safe Usage of Magnetized Products

Precautions for Use

  • Keep magnetized products away from sensitive items such as floppy disks, magnetic cards, cassette tapes, credit cards, electronic devices, digital dashboards, pacemakers, and other medical equipment.

Handling Safety

  • Due to their strong magnetic force, handle them with care to avoid finger injuries.

Material Durability

  • NdFeB (Neodymium Iron Boron) and SmCo (Samarium Cobalt) magnets have low impact resistance. Take extra care during transportation and handling to prevent damage or breakage.

These guidelines ensure the safe and efficient use of magnetized products while safeguarding users and surrounding equipment.

Process Flow:

Grade Curve:

Magnetic Performance Table:

Grade Remanence(Br) Coercivity(Hcb) Intrinsic Coercivity Force(Hcj) Max.Energy Product(BH)m Working Temp
kGs T KOe KA/m KOe KA/m MGOe KJ/m3 ℃
Nom. min. Nom. min. min. min. Nom. min. Nom. min.
N35 12.3 11.8 1.23 1.18 10.8 860 ≥12 ≥955 36 33 287 263 ≤80
N38 12.8 12.3 1.28 1.23 10.8 860 ≥12 ≥955 39 36 310 287 ≤80
N40 13.1 12.6 1.31 1.26 10.8 860 ≥12 ≥955 41 38 326 302 ≤80
N42 13.4 12.9 1.34 1.29 10.8 860 ≥12 ≥955 43 40 342 318 ≤80
N45 13.8 13.3 1.38 1.33 10.8 860 ≥12 ≥955 46 43 366 342 ≤80
N48 14.2 13.7 1.42 1.37 10.8 860 ≥12 ≥955 49 45 390 358 ≤80
N50 14.4 13.9 1.44 1.39 10.8 860 ≥12 ≥955 51 47 406 370 ≤80
N52 14.7 14.2 1.47 1.42 10.5 836 ≥12 ≥955 53 49 422 390 ≤80
N54 15.0 14.5 1.50 1.45 10.5 836 ≥12 ≥955 55 51 438 406 ≤80
N55 15.2 14.7 1.52 1.47 10.5 836 ≥12 ≥955 56 52 446 414 ≤60
N56 15.2 14.8 1.52 1.58 10.5 836 ≥12 ≥955 56 52 446 414 ≤60
38M 12.8 12.3 1.28 1.23 11 876 ≥14 ≥1114 35 33 279 263 ≤100
40M 13.1 12.6 1.31 1.26 11.4 910 ≥14 ≥1114 38 36 303 287 ≤100
42M 13.4 12.9 1.34 1.29 11.8 938 ≥14 ≥1114 40 38 318 303 ≤100
45M 13.8 13.3 1.38 1.33 12.2 971 ≥14 ≥1114 42 40 334 318 ≤100
48M 14.2 13.7 1.42 1.37 12.7 1012 ≥14 ≥1114 45 43 358 342 ≤100
50M 14.4 13.9 1.44 1.39 13.1 1043 ≥14 ≥1114 48 46 383 367 ≤100
52M 14.7 14.2 1.47 1.42 13.1 1043 ≥14 ≥1114
54M 14.9 14.4 1.49 1.44 13.1 1043 ≥14 ≥1114
56M 15.0 14.6 1.50 1.46 13.1 1043 ≥14 ≥1114
N33H 11.7 11.4 1.17 1.14 10.3 820 ≥17 ≥1353 33 31 263 247 ≤120
N35H 12.1 11.7 1.21 1.17 10.8 860 ≥17 ≥1353 35 33 279 263 ≤120
N38H 12.6 12.2 1.26 1.22 11.5 915 ≥17 ≥1353 38 36 303 287 ≤120
N40H 12.9 12.6 1.29 1.26 11.5 915 ≥17 ≥1353 40 38 318 303 ≤120
N42H 13.2 12.9 1.32 1.29 12.2 971 ≥17 ≥1353 42 40 334 318 ≤120
N45H 13.6 13.2 1.36 1.32 12.4 987 ≥17 ≥1353 45 43 358 342 ≤120
N48H 13.8 13.6 1.38 1.36 12.4 987 ≥17 ≥1353 47 45 375 358 ≤120
N30SH 11.2 10.8 1.12 1.08 9.8 780 ≥20 ≥1595 30 28 239 223 ≤150
N33SH 11.7 11.4 1.17 1.14 10.3 820 ≥20 ≥1595 33 31 263 247 ≤150
N35SH 12.1 11.7 1.21 1.17 10.8 860 ≥20 ≥1595 35 33 279 263 ≤150
N38SH 12.6 12.2 1.26 1.22 11.8 939 ≥20 ≥1595 38 36 303 287 ≤150
N40SH 12.9 12.6 1.29 1.26 12 955 ≥20 ≥1595 40 38 318 303 ≤150
N42SH 13.2 12.8 1.32 1.28 12.2 971 ≥20 ≥1595 42 40 334 318 ≤150
N45SH 13.5 13.3 1.35 1.33 12.2 981 ≥20 ≥1595 45 42 358 334 ≤150
N28UH 10.8 10.4 1.08 1.04 9.8 780 ≥25 ≥1990 28 26 223 207 ≤180
N30UH 11.2 10.8 1.12 1.08 10.1 804 ≥25 ≥1990 30 28 239 223 ≤180
N33UH 11.7 11.4 1.17 1.14 10.3 820 ≥25 ≥1990 33 31 263 247 ≤180
N35UH 12.1 11.7 1.21 1.17 10.8 860 ≥25 ≥1990 35 33 279 263 ≤180
N38UH 12.4 12.1 1.24 1.21 11.4 908 ≥25 ≥1990 38 35 303 279 ≤180
N40UH 12.7 12.4 1.27 1.24 11 924 ≥25 ≥1990 40 38 318 303 ≤180
N42UH 13 12.8 1.3 1.28 12 955 ≥25 ≥1990 42 40 342 318 ≤180
N28EH 10.8 10.4 1.08 1.04 9.8 780 ≥30 ≥2388 28 26 223 207 ≤200
N30EH 11.2 10.8 1.12 1.08 10.1 804 ≥30 ≥2388 30 28 239 223 ≤200
N33EH 11.7 11.2 1.17 1.12 10.4 828 ≥30 ≥2388 33 30 263 239 ≤200
N35EH 12.1 11.7 1.21 1.17 10.8 860 ≥30 ≥2388 36 33 287 263 ≤200
N38EH 12.4 12 1.24 1.2 11.6 924 ≥30 ≥2388 38 35 303 287 ≤200
N28AH 10.8 10.4 1.08 1.04 10 796 ≥33 ≥2626 28 26 223 207 ≤240
N30AH 11.2 10.8 1.12 1.08 10.1 804 ≥33 ≥2626 30 28 239 223 ≤240
N33AH 11.7 11.2 1.17 1.12 10.4 828 ≥33 ≥2626 33 31 263 247 ≤240
N35AH 12.1 11.7 1.21 1.17 10.8 860 ≥33 ≥2626 35 33 279 263 ≤240

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