Engineered Neodymium Magnets | Magnet Applications

High power magnets with a wide range of applications achieve maximum performance while maintaining minimum size. They can be made in blocks, rings, arcs, discs, spheres, trapezoids, triangles, and many other shapes.

Rare Earth magnet
Offers the highest Br (residual induction) and Hci (intrinsic coercivity) values
The strongest commercially available magnet – up to 56 MGOe
Susceptible to corrosion due to the Neodymium-rich phase at grain boundaries
Can operate in environments up to 220°C (428°F) or higher with proper thermal design

Neodymium magnets have a wide range of uses from renewable energy, powering electric car motors, kinetic art pieces, medical devices such as MRIs and magnetic levitation as seen in maglev train systems.

Neodymium-Magnet-transparent

Engineered Neodymium Magnets and Magnetic Assemblies

Neodymium magnets are a type of rare earth magnet and are the most common rare earth permanent magnets in the world. They are composed of Neodymium (Nd), Iron (Fe) and Boron (B), and are some of the most powerful permanent magnets known to man. However, these magnets are vulnerable to corrosion if they are exposed to the elements. To protect the magnet from corrosion, the magnet is usually coated with nickel. Other coating options are aluminum, zinc, tin, copper, epoxy, silver and gold.

Extremely strong and affordable, neodymium magnets are commonly used in consumer products such cell phones, loudspeakers, fasteners and toys. Industrially, they are used in metal detectors, oil filters, alternators, flow meters and as clamps by welders. MRI machines, hybrid and electric vehicles, and wind turbines all employ neodymium magnets. These high power magnets achieve maximum performance while maintaining minimum size. They can be made in blocks, rings, arcs, discs, spheres, trapezoids, triangles, and many other shapes. Ni-Cu-Ni plating is most applied and other coatings/finishes are available. Radially aligned magnets are available to replace arcs and grain boundary diffusion is available in commercial quantities.

Neodymium Magnet Material Charts

Plastic Bonded Neodymium Magnets

Popular resin-bonded magnet, formed through compression bonding or injection molding
Available with magnetic energy values up to 12 MGOe, and optional protective coatings
Commonly used in applications such as encoders and brushless DC (BLDC) motors
Operates in environments up to 150°C (302°F)
Cost-effective with low electrical conductivity, ideal for minimizing eddy current losses

Plastic bonded neodymium magnets are-cost effective while offering high performance and tolerances in addition to low electrical conductivity. It is possible to multipole magnetize them as a complete ring, and they can be designed to achieve specific flux density profiles. These are especially well suited for applications such as minimizing cogging torque in motors. These injection molded magnets are an excellent choice for higher volume applications.

Compression bonded magnets can also be easily machined, making them suitable for low volume production in manufacturing magnets with multipole magnetization, skew angled poles, and various other directions of magnetizations. Magnetizing patterns are only limited by whether or not a magnetizing coil fixture can be produced to give the required magnetizing pattern.

Bonded NdFeB magnets can be compression or injection molded to net shape. These high tolerances can be achieved without the need for further machining.
Injection molded magnets are available in both neodymium and ferrite varieties.
Injection molded ferrite magnets offer high durability and resistance to shock, as well as a low cost and extreme resistance to corrosions and conditions such as low density.
Available in high tolerance and complex shapes.
No coating required, although black epoxy and Parylene coatings are available.

Bonded Neodymium Magnet Material Charts

Available Neodymium Grades

	BR	BR	HCB	HCB	HCJ	HCJ	BHMAX	BHMAX	REV. TEMP. COEF.	REV. TEMP. COEF.	TEMP
Grade	Typical mT	Typical gauss	min kA/m	min oersteds	min kA/m	min oersteds	Typical kJ/m3	Typical MGOe	Br %/°C	HcJ %/°C	max °C
N35	1210	12,100	860	10,800	955	12,000	283	35	-0.12	-0.618	80
N38	1260	12,600	860	10,800	955	12,000	306	38	-0.12	-0.75	80
N40	1285	12,850	923	11,600	955	12,000	318	40	-0.12	-0.75	80
N42	1315	13,150	860	10,800	955	12,000	334	42	-0.12	-0.75	80
N45	1350	13,500	860	10,800	955	12,000	350	44	-0.12	-0.75	80
N48	1400	14,000	836	10,500	955	12,000	390	49	-0.12	-0.75	80
N50	1425	14,250	836	10,500	955	12,000	390	49	-0.12	-0.75	80
N52	1450	14,500	836	10,500	876	11,000	406	51	-0.12	-0.75	60
N55	1490	14,900	716	9,000	876	11,000	430	54	-0.12	-0.75	60
N33M	1175	11,750	836	10,500	1114	14,000	267	34	-0.12	-0.675	100
N35M	1210	12,100	868	10,900	1114	14,000	283	35	-0.12	-0.675	100
N38M	1260	12,600	899	11,300	1114	14,000	307	39	-0.12	-0.675	100
N40M	1285	12,850	923	11,600	1114	14,000	322	40	-0.12	-0.675	100
N42M	1315	13,150	955	12,000	1114	14,000	338	42	-0.12	-0.675	100
N45M	1350	13,500	971	12,200	1114	14,000	354	44	-0.12	-0.675	100
N48M	1395	13,950	995	12,500	1114	14,000	378	48	-0.12	-0.675	100
N30H	1105	11,050	796	10,000	1353	17,000	235	30	-0.12	-0.605	120
N33H	1175	11,750	836	10,500	1353	17,000	267	34	-0.12	-0.605	120
N35H	1210	12,100	868	10,900	1353	17,000	283	35	-0.12	-0.605	120
N38H	1260	12,600	899	11,300	1353	17,000	307	39	-0.12	-0.605	120
N40H	1285	12,850	923	11,600	1353	17,000	322	40	-0.12	-0.605	120
N42H	1300	13,000	955	12,000	1353	17,000	330	41	-0.12	-0.605	120
N45H	1350	13,500	971	12,200	1353	17,000	354	44	-0.12	-0.605	120
N48H	1390	13,900	1011	12,700	1353	17,000	378	48	-0.12	-0.605	120
N50H	1415	14,150	1035	13,000	1274	16,000	390	49	-0.12	-0.605	120
N30SH	1125	11,250	811	10,200	1592	20,000	243	31	-0.12	-0.535	150
N33SH	1175	11,750	844	10,600	1592	20,000	267	34	-0.12	-0.535	150
N35SH	1210	12,100	876	11,000	1592	20,000	283	35	-0.12	-0.535	150
N38SH	1260	12,600	907	11,400	1592	20,000	307	39	-0.12	-0.535	150
N40SH	1285	12,850	939	11,800	1592	20,000	322	40	-0.12	-0.535	150
N42SH	1310	13,100	955	12,000	1592	20,000	330	41	-0.12	-0.535	150
N45SH	1350	13,500	979	12,300	1592	20,000	354	44	-0.12	-0.535	150
N48SH	1390	13,900	995	12,500	1512	19,000	374	47	-0.12	-0.535	150
N28UH	1075	10,750	764	9,600	1990	25,000	227	29	-0.12	-0.465	180
N30UH	1125	11,250	812	10,200	1990	25,000	243	31	-0.12	-0.465	180
N33UH	1175	11,750	852	10,700	1990	25,000	267	34	-0.12	-0.465	180
N35UH	1210	12,100	860	10,080	1990	25,000	283	35	-0.12	-0.465	180
N38UH	1260	12,600	876	11,000	1990	25,000	307	39	-0.12	-0.465	180
N40UH	1285	12,850	915	11,500	1990	25,000	318	40	-0.12	-0.465	180
N42UH	1310	13,100	955	12,000	1990	25,000	330	41	-0.12	-0.465	180
N45UH	1350	13,500	955	12,500	1990	24,000	358	45	-0.12	-0.465	180
N28EH	1085	10,850	780	9,800	2388	30,000	227	29	-0.12	-0.42	200
N30EH	1125	11,250	812	10,200	2388	30,000	243	31	-0.12	-0.42	200
N33EH	1165	11,650	820	10,300	2388	30,000	267	34	-0.12	-0.42	200
N35EH	1200	12,000	836	10,500	2388	30,000	279	35	-0.12	-0.42	200
N38EH	1235	12,350	899	11,300	2388	30,000	303	38	-0.12	-0.42	200
N40EH	1270	12,700	915	11,500	2388	30,000	314	39	-0.12	-0.42	200
N28AH	1075	10,750	780	9,800	2706	34,000	223	28	-0.12	-0.393	220
N30AH	1120	11,200	812	10,200	2706	34,000	239	30	-0.12	-0.393	220
N35AH	1195	11,950	883	11,100	2706	34,000	275	35	-0.12	-0.393	220