Neodymium Magnets – Welcome to IMACN!

PRODUCTS

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

Neodymium Blocks

Neodymium Disks

Neodymium Rings

Neodymium Segments

Neodymium Spheres

Special Geometry

CHARACTERISTICS

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		Force Ihc		(BH) max		Working temp
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. Work. temp: (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
Nickel	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
Zinc	Color Zn	8-20 µm	Blue-silver	Excellent resistance to salinity	160°C
Tin	Ni+Cu+Sn	15-20 µm	Silver bright	Resistance superior to the humid atmosphere	160°C
Copper	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.

APPLICATIONS:

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.

Electric motors

Wind turbines

Hard Drives

Speakers

Headphones

Magnetic R. Scanners

Sensors

Generators

Magnetic separator

PRODUCTION 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.