NEODYMIUM MAGNETS

The neodymium magnets, together with the samarium magnets, are part of the rare earth group and represent the latest generation of magnetic materials. These magnets have properties very superior to the traditional ones, being at the moment the most powerful magnets of the market.

 

NEODYMIUM MAGNETS

The neodymium magnets, together with the samarium magnets, are part of the rare earth group and represent the latest generation of magnetic materials. These magnets have properties very superior to the traditional ones, being at the moment the most powerful magnets of the market.

 

ico-titlePRODUCTS

High precision neodymium magnets form a wide range of shapes, sizes and grades.



ico-titleCHARACTERISTICS

The characteristics of the neodymium magnets are shown in the following table of qualities. It indicates the remanence of the magnets, the coercive force, the working temperatures and the minimum and maximum resistance.

CONSULT QUALITY TABLE

Grade Nomenclature Remanence Coercive force Intrinsic coercive Maxium energy product Working temp
Br bHc Fuerza Ihc (BH) max
Neodimyum Magnets Br max (T) Br min (T) HcB min (kA/m) HcB max (kA/m) HcJ min (kA/m) HcJ max (kA/m) BHmax min (kJ/m³) BHmax max (kJ/m³) Max. Temp. trabajo: (ºC)
NdFeB N33 anistropic N33 NdFeB  247/96 1,14 1,17 820 876 955 - 247 263 80
NdFeB N35 anistropic N35 NdFeB  263/96 1,17 1,20 860 900 955 - 263 279 80
NdFeB N38 anistropic N38 NdFeB  287/96 1,22 1,26 900 915 955 - 287 303 80
NdFeB N40 anistropic N40 NdFeB  303/96 1,26 1,29 908 924 955 - 303 318 80
NdFeB N42 anistropic N42 NdFeB  318/96 1,29 1,31 915 939 955 - 318 334 80
NdFeB N45 anistropic N45 NdFeB  342/96 1,33 1,36 924 955 955 - 342 358 80
NdFeB N48 anistropic N48 NdFeB  367/88 1,38 1,40 810 860 875 - 367 383 80
NdFeB N50 anistropic N50 NdFeB  383/88 1,40 1,43 794 860 875 - 383 398 80
NdFeB N52 anistropic N52 NdFeB  398/88 1,42 1,45 794 860 875 - 398 414 80
NdFeB N35M anistropic N35M NdFeB  263/111 1,17 1,20 868 900 1114 - 263 279 100
NdFeB N38M anistropic N38M NdFeB  287/111 1,22 1,26 900 939 1114 - 287 303 100
NdFeB N40M anistropic N40M NdFeB  303/111 1,26 1,29 924 955 1114 - 303 318 100
NdFeB N42M anistropic N42M NdFeB  318/111 1,29 1,32 955 987 1114 - 318 334 100
NdFeB N45M anistropic N45M NdFeB  342/111 1,33 1,35 971 1003 1114 - 342 358 100
NdFeB N30H anistropic N30H NdFeB  223/135 1,08 1,12 794 836 1353 - 223 239 120
NdFeB N33H anistropic N33H NdFeB  247/135 1,14 1,17 836 876 1353 - 247 263 120
NdFeB N35H anistropic N35H NdFeB  263/135 1,17 1,20 868 900 1353 - 263 279 120
NdFeB N38H anistropic N38H NdFeB  287/135 1,22 1,26 900 939 1353 - 287 303 120
NdFeB N40H anistropic N40H NdFeB  303/135 1,26 1,28 924 955 1353 - 303 318 120
NdFeB N42H anistropic N42H NdFeB  318/135 1,28 1,30 955 987 1353 - 318 334 120
NdFeB N33SH anistropic N33SH NdFeB  247/160 1,14 1,17 844 876 1595 - 247 263 150
NdFeB N35SH anistropic N35SH NdFeB  263/160 1,17 1,20 876 900 1595 - 263 279 150
NdFeB N38SH anistropic N38SH NdFeB  287/160 1,22 1,25 908 939 1595 - 287 303 150
NdFeB N40SH anistropic N40SH NdFeB  303/160 1,25 1,27 939 963 1595 - 303 318 150
NdFeB N42SH anistropic N42SH NdFeB  318/160 1,28 1,30 955 987 1595 - 318 334 150
NdFeB N33UH anistropic N33UH NdFeB  247/199 1,13 1,15 844 876 1990 - 247 263 180
NdFeB N35UH anistropic N35UH NdFeB  263/199 1,17 1,19 876 900 1990 - 263 279 180
NdFeB N38UH anistropic N38UH NdFeB  287/199 1,22 1,25 908 939 1990 - 287 303 180
NdFeB N28EH anistropic N28EH NdFeB  207/239 1,04 1,08 780 811 2388 - 207 223 200
NdFeB N30EH anistropic N30EH NdFeB  223/239 1,08 1,12 804 844 2388 - 223 239 200
NdFeB N33EH anistropic N33EH NdFeB  247/239 1,13 1,15 844 876 2388 - 247 263 200
NdFeB N30AH anistropic N30AH NdFeB  223/263 1,08 1,12 804 844 2626 - 223 239 220
NdFeB N33AH anistropic N33AH NdFeB  247/263 1,13 1,15 844 876 2626 - 247 263 220
NdFeB N34AH anistropic N34AH NdFeB  247/255 1,10 1,16 836 900 2547 - 247 271 220
NdFeB N35AH anistropic N35AH NdFeB  263/263 1,17 1,19 876 915 2626 - 263 279 220

Type of material

Metal
Rare Earth

Composition

Neodymium (Nd)
Iron (Faith)
Boron (B)

Work temperature

From 80ºC to 200ºC

Advantage

Powerful magnets
High coercivity and remanence
Application in confined spaces


Advantage:

Neodymium magnets are magnetic elements with greater remanence and high coercivity. Thanks to its magnetic properties, the neodymium magnet is the most powerful on the market, being the most used in the industrial sector.

Neodymium magnets in equal size with other magnets, such as ferrite, are stronger, even in some cases, being smaller, can withstand more strength.

Work temperature:

The temperature is one of the factors to take into account in the application of the magnet.

Currently in IMA we have a wide range of magnets that cover temperatures from 80ºC to 200ºC in Neodymium, from 200ºC to 350ºC, we have the alternative of Samario magnets.


Covering:

Covering Type THICKNESS COLOUR OBSERVATIONS WORK TEMPERATURE
Níquel Ni+NI 10-20 µm Silver (bright) Excellent resistance to the humid atmosphere 200°C
  Ni+Cu+NI     Resistance superior to the humid atmosphere  
Zinc Zn azul 8-20 µm Blue-silver Good resistance to salinity  
Color Zn Excellent resistance to salinity 160°C
Estaño Ni+Cu+Sn 15-20 µm Silver bright Resistance superior to the humid atmosphere 160°C
Cobre Ni+Cu 10-20 µm gold Temporary treatment  
Epoxi Ni+Cu+epoxy 15-25 µm black Excellent resistance to weather and salinity 120°C

An additional protection for the neodymium magnet will ensure long-term maintenance and durability, avoiding losing its properties and possible corrosion by external or atmospheric chemical agents.

The solution is the coating of the magnet by means of a coating that can be made of different materials such as epoxy, nickel, zinc, copper and others. In this way, the magnet can withstand lower temperatures and prevent its oxidation.


ico-titleAPPLICATIONS:

The set of magnetic properties offered by neodymium magnets allows multiple applications, through great strength and better performance than other materials such as ferrite or alnico:

The manufacture of this magnet by sintering, allows us to achieve a wide variety of designs and shapes, to meet the needs of customers.


ico-titlePRODUCTION PROCESS:

Neodymium magnets must go through different stages of the production process to be subsequently distributed and meet the needs of our customers.

In the first instance, the raw materials or rare earths are introduced in an oven where they are melted, casting the material obtained in molds and cooling it to create solid pieces. A very fine powder is then produced from the solid mass obtained above, which passes through the sintering phase where the state changes to liquid. In this process, the particles are magnetically aligned and bound together to create dense pieces. These pieces are heat treated, cut to the desired shape and size, and finally, subjected to treatments against corrosion. Finally, they magnetize and the magnet is created. That subsequently, it is tested to certify its quality.