Neodymium Magnets (NdFeB)

Experience the force of Goudsmit UK’s Neodymium magnet grades for exceptional magnetic solutions.

Array ( [0] => Array ( [_data_accordion_title] => Coatings Available for Neodymium Magnets [_data_accordion_text] => To protect these magnets from corrosion and oxidation, coatings are applied to their surfaces. At Goudsmit UK, there are several coatings available for neodymium magnets. The choice of coating depends on the specific application requirements, and the experts at Goudsmit UK can provide guidance to help customers select the right coating for their neodymium magnets. Nickel (Ni-Cu-Ni)

The most frequently used coating.
Colour - shiny metallic.
Good price/performance ratio.
Thickness - approx. 12 micrometres.

Gold-coating (Ni-Cu-Ni-Au)

Razor-thin coating (24k) over normal Ni-Cu-Ni coat,
Colour - shiny metallic.
Thickness of gold-coating without Ni-Cu-Ni – various depending on application.
Thickness of whole coating - approx. 12 micro metres.
Only suitable for decorative purposes only as the gold-coating rubs off easily with frequent use.

Chrome (Ni-Cu-Ni-Cr)

Better resistance against rubbing and pressure, therefore often used for sphere shaped magnets.
Colour - dull, grey-metallic.
Thickness - approx. 15 micrometres.

Copper (Ni-Cu)

Colour - shiny brown-red-gold. The colour may change over time due to oxidation.
Slightly weaker rubbing and impact resistance than Ni-Cu-Ni.
Slightly weaker corrosion resistance than als Ni-Cu-Ni.
Thickness - approx. 10 micrometres.
The copper-coloured surface rubs off with frequent use (similar to gold-coated magnets) and is therefore suitable for decorative purposes only.

Epoxy resin (Ni-Cu-Ni-Epoxy)

Colour – black.
Almost 100% non-corrosive, as long as coating is intact.
Not shock-resistant (crumbles quickly).
Thickness - approx. 10 micrometres.
Even the smallest, not visible to the eye, damages of the coating will cause damage to the magnet in the long term when exposed to moisture.

Zinc (Zn)

Colour - matt grey/blueish
Only zinc without Ni-Cu-Ni.
More susceptible to corrosion than Ni-Cu-Ni.
Can leave black marks.
Thickness - approx. 4 micrometres.

Nickel-zinc (Ni-Cu-Ni-Zn)

Colour - matt silver, slightly grey/bluish.
Ni-Cu-Ni with a layer of zinc.
Less susceptible to corrosion than Ni-Cu-Ni.
Thickness - 12–15 micrometres.

Non-stick coating (PTFE)

Colour - grey/anthracite.
Non-stick coating (PTFE) only, without Ni-Cu-Ni.
Nearly waterproof.
Very abrasion resistant.
Thickness - 12-25 micrometres.

Without coating

Colour - black/grey.
Magnets oxidise and corrode quickly when they come in contact with oxygen and water.
Magnets need to be covered air and watertight quickly.

Silver (Ni-Cu-Ni-Ag)

Colour - shiny silver.
Razor-thin coating over regular Ni-Cu-Ni coating.
Material - sterling silver.
Thickness - approx. 12 micrometres.

) [1] => Array ( [_data_accordion_title] => Advantages and Disadvantages of Neodymium Magnets [_data_accordion_text] => Neodymium magnets are widely used in many applications due to their exceptional strength and magnetic properties. However, like all magnets, they have both advantages and disadvantages that should be considered when selecting them for use in various applications. Here are some of the advantages and disadvantages of neodymium magnets: Advantages: High magnetic strength: Neodymium magnets are the strongest type of permanent magnets available, providing exceptional magnetic strength and field density. Wide range of shapes and sizes: These magnets can be made in a wide range of shapes and sizes to fit various applications, from small disc magnets to large block magnets. Cost-effective: Neodymium magnets are relatively affordable compared to other high-strength magnets such as samarium cobalt. High resistance to demagnetisation: They have high resistance to demagnetisation, meaning they can maintain their magnetic strength for long periods of time. Lightweight: They are relatively lightweight, making them ideal for use in applications where weight is a concern. Disadvantages: Brittle: Neodymium magnets are brittle and can easily crack or break if dropped or subjected to impact. Corrosion: They are prone to corrosion and may require coating or plating to protect them from rust and degradation. High reactivity: Neodymium magnets are highly reactive to temperature and humidity changes and can lose their magnetic properties if exposed to extreme conditions. Handling: These magnets are extremely strong and can be challenging to handle, requiring care and caution when being installed or removed. ) )

Exploring Goudsmit UK’s High-Performance Neodymium Magnetic Grades

Neodymium magnets, also known as NdFeB magnets, are the strongest type of permanent magnets available today. They offer high magnetic strength, excellent resistance to demagnetisation, and are commonly used in a wide range of applications, including motors, generators, sensors, and magnetic separators.

At Goudsmit UK, we offer a wide range of NdFeB magnets in various grades, shapes, and sizes to meet your specific needs. Our neodymium magnet material grades range from N52 to N42AH to Neo bonded magnets, each offering different levels of magnetic strength and resistance to demagnetisation.

At Goudsmit UK, we use only the finest raw materials and advanced manufacturing techniques to produce neodymium magnets that meet the most stringent standards of quality and performance. Our extensive range of NdFeB magnets includes standard sizes, shapes, and grades, as well as custom designs tailored to meet your unique specifications.

Our neodymium magnets are widely used in the automotive, aerospace, medical, and renewable energy industries, among others. They are also commonly used in consumer products, such as speakers and headphones.

When you choose us as your neodymium magnet manufacturing partner, you benefit from:

High-quality products: We pride ourselves on producing neodymium magnets of exceptional quality, designed to meet your exact requirements suited to your application.

Reliable delivery: We understand the importance of timely delivery and strive to ensure that your orders are delivered on time and in full.

Expert support: Our team of experts is always ready to provide advice and support, ensuring that you get the best possible solutions for your specific needs.

Competitive pricing: We offer competitive pricing for our neodymium magnets, ensuring that you get the best value.

Custom designs: Our team of experienced engineers can design and manufacture neodymium magnets to your exact specifications, ensuring that you get the perfect solution for your application.

Coatings Available for Neodymium Magnets

To protect these magnets from corrosion and oxidation, coatings are applied to their surfaces. At Goudsmit UK, there are several coatings available for neodymium magnets. The choice of coating depends on the specific application requirements, and the experts at Goudsmit UK can provide guidance to help customers select the right coating for their neodymium magnets.

Nickel (Ni-Cu-Ni)

The most frequently used coating.
Colour - shiny metallic.
Good price/performance ratio.
Thickness - approx. 12 micrometres.

Gold-coating (Ni-Cu-Ni-Au)

Razor-thin coating (24k) over normal Ni-Cu-Ni coat,
Colour - shiny metallic.
Thickness of gold-coating without Ni-Cu-Ni – various depending on application.
Thickness of whole coating - approx. 12 micro metres.
Only suitable for decorative purposes only as the gold-coating rubs off easily with frequent use.

Chrome (Ni-Cu-Ni-Cr)

Better resistance against rubbing and pressure, therefore often used for sphere shaped magnets.
Colour - dull, grey-metallic.
Thickness - approx. 15 micrometres.

Copper (Ni-Cu)

Colour - shiny brown-red-gold. The colour may change over time due to oxidation.
Slightly weaker rubbing and impact resistance than Ni-Cu-Ni.
Slightly weaker corrosion resistance than als Ni-Cu-Ni.
Thickness - approx. 10 micrometres.
The copper-coloured surface rubs off with frequent use (similar to gold-coated magnets) and is therefore suitable for decorative purposes only.

Epoxy resin (Ni-Cu-Ni-Epoxy)

Colour – black.
Almost 100% non-corrosive, as long as coating is intact.
Not shock-resistant (crumbles quickly).
Thickness - approx. 10 micrometres.
Even the smallest, not visible to the eye, damages of the coating will cause damage to the magnet in the long term when exposed to moisture.

Zinc (Zn)

Colour - matt grey/blueish
Only zinc without Ni-Cu-Ni.
More susceptible to corrosion than Ni-Cu-Ni.
Can leave black marks.
Thickness - approx. 4 micrometres.

Nickel-zinc (Ni-Cu-Ni-Zn)

Colour - matt silver, slightly grey/bluish.
Ni-Cu-Ni with a layer of zinc.
Less susceptible to corrosion than Ni-Cu-Ni.
Thickness - 12–15 micrometres.

Non-stick coating (PTFE)

Colour - grey/anthracite.
Non-stick coating (PTFE) only, without Ni-Cu-Ni.
Nearly waterproof.
Very abrasion resistant.
Thickness - 12-25 micrometres.

Without coating

Colour - black/grey.
Magnets oxidise and corrode quickly when they come in contact with oxygen and water.
Magnets need to be covered air and watertight quickly.

Silver (Ni-Cu-Ni-Ag)

Colour - shiny silver.
Razor-thin coating over regular Ni-Cu-Ni coating.
Material - sterling silver.
Thickness - approx. 12 micrometres.

Advantages and Disadvantages of Neodymium Magnets

Neodymium magnets are widely used in many applications due to their exceptional strength and magnetic properties. However, like all magnets, they have both advantages and disadvantages that should be considered when selecting them for use in various applications. Here are some of the advantages and disadvantages of neodymium magnets:

Advantages:

High magnetic strength: Neodymium magnets are the strongest type of permanent magnets available, providing exceptional magnetic strength and field density.

Wide range of shapes and sizes: These magnets can be made in a wide range of shapes and sizes to fit various applications, from small disc magnets to large block magnets.

Cost-effective: Neodymium magnets are relatively affordable compared to other high-strength magnets such as samarium cobalt.

High resistance to demagnetisation: They have high resistance to demagnetisation, meaning they can maintain their magnetic strength for long periods of time.

Lightweight: They are relatively lightweight, making them ideal for use in applications where weight is a concern.

Disadvantages:

Brittle: Neodymium magnets are brittle and can easily crack or break if dropped or subjected to impact.

Corrosion: They are prone to corrosion and may require coating or plating to protect them from rust and degradation.

High reactivity: Neodymium magnets are highly reactive to temperature and humidity changes and can lose their magnetic properties if exposed to extreme conditions.

Handling: These magnets are extremely strong and can be challenging to handle, requiring care and caution when being installed or removed.

Magnetic Grades

Item	Grade	Remanence		Coercivity				Max Energy Product		Temperature Coefficient		Max Working Temperature
		Br		HcB		HcJ		(BH)max		(Br)	(Hcj)	TwMax
		T	kGs	kA/m	kOe	kA/m	kOe	KJ/m³	MGOe	%/°C	%/°C	°C
N	N35	1.17-1.22	11.7-12.2	≥860	≥10.8	≥955	≥12	263-287	33-36	-0.10 ~ -0.12	-0.4 ~ 0.6	≤80
	N38	1.23-1.25	12.3-13.0	≥876	≥11	≥955	≥12	287-318	36-40			≤80
	N40	1.26-1.32	12.6-13.2	≥876	≥11	≥955	≥12	302-334	38-42			≤80
	N42	1.29-1.35	12.9-13.5	≥876	≥11	≥955	≥12	318-350	40-44			≤80
	N45	1.32-1.38	13.2-13.8	≥876	≥11	≥955	≥12	334-366	42-46			≤80
	N48	1.37-1.43	13.7-14.3	≥876	≥11	≥955	≥12	358-390	45-49			≤80
	N50	1.40-1.45	14.0-14.5	≥876	≥11	≥955	≥12	374-406	47-51			≤80
	N52	1.42-1.48	14.2-14.8	≥836	≥10.5	≥876	≥11	390-422	49-53			≤80
	N55	1.46-1.51	14.6-15.1	≥860	≥10.8	≥955	≥12	406-438	51-55			≤80
M	N35M	1.17-1.22	11.7-12.2	≥868	≥10.9	≥1114	≥14	263-287	33-36			≤100
	N38M	1.23-1.30	12.3-13.0	≥915	≥11.5	≥1114	≥14	287-318	36-40			≤100
	N40M	1.26-1.32	12.6-13.2	≥963	≥12.1	≥1114	≥14	302-334	38-42			≤100
	N42M	1.29-1.35	12.9-13.5	≥963	≥12.1	≥1114	≥14	318-350	40-44			≤100
	N45M	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1114	≥14	334-366	42-46			≤100
	N48M	1.37-1.43	13.7-14.3	≥1019	≥12.8	≥1114	≥14	358-390	45-49			≤100
	N50M	1.40-1.45	14.0-14.5	≥1043	≥13.1	≥1114	≥14	374-406	47-51			≤100
	N52M	1.42-1.48	14.2-14.8	≥1059	≥13.3	≥1114	≥14	390-422	49-53			≤100
	N54M	1.46-1.51	14.6-15.1	≥995	≥12.5	≥1035	≥13	406-438	51-55			≤100
H	N35H	1.17-1.24	11.7-12.4	≥876	≥11.0	≥1353	≥17	263-295	33-37			≤120
	N38H	1.23-1.30	12.3-13.0	≥915	≥11.5	≥1353	≥17	286-318	36-40			≤120
	N40H	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1353	≥17	302-334	38-42			≤120
	N42H	1.29-1.35	12.9-13.5	≥963	≥12.1	≥1353	≥17	318-350	40-44			≤120
	N45H	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1353	≥17	334-366	42-46			≤120
	N48H	1.37-1.43	13.7-14.3	≥1011	≥12.7	≥1353	≥17	358-392	45-49			≤120
	N50H	1.40-1.45	14.0-14.5	≥1027	≥12.9	≥1353	≥17	374-406	47-51			≤120
	N52H	1.42-1.48	14.2-14.8	≥1059	≥13.3	≥1353	≥17	390-422	49-53			≤120
SH	N33SH	1.14-1.21	11.4-12.1	≥852	≥10.7	≥1592	≥20	247-279	31-35			≤150
	N35SH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥1592	≥20	263-295	33-37			≤150
	N38SH	1.23-1.29	12.3-12.9	≥915	≥11.5	≥1592	≥20	287-318	36-40			≤150
	N40SH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1592	≥20	302-334	38-42			≤150
	N42SH	1.29-1.35	12.9-13.5	≥963	≥12.1	≥1592	≥20	318-350	40-44			≤150
	N45SH	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1592	≥20	334-366	42-46			≤150
	N48SH	1.37-1.43	13.7-14.3	≥1011	≥12.7	≥1592	≥20	358-390	45-49			≤150
	N50SH	1.40-1.45	14.0-14.5	≥1027	≥12.9	≥1592	≥20	374-406	47-51			≤150
	N52SH	1.42-1.48	14.2-14.8	≥1035	≥13	≥1512	≥19	390-422	49-53			≤150
UH	N30UH	1.08-1.13	10.8-11.3	≥796	≥10.0	≥1990	≥25	223-247	28-31			≤180
	N33UH	1.14-1.18	11.4-11.8	≥852	≥10.5	≥1990	≥25	247-279	31-35			≤180
	N35UH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥1990	≥25	263-295	33-37			≤180
	N38UH	1.23-1.29	12.3-12.9	≥915	≥11.5	≥1990	≥25	287-318	36-40			≤180
	N40UH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1990	≥25	302-334	38-42			≤180
	N42UH	1.28-1.35	12.8-13.5	≥963	≥12.1	≥1990	≥25	310-350	39-44			≤180
	N45UH	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1990	≥25	334-366	42-46			≤180
	N48UH	1.37-1.42	13.7-14.2	≥1019	≥12.8	≥1910	≥24	358-390	45-49			≤180
	N50UH	1.39-1.45	13.9-14.5	≥995	≥12.5	≥1990	≥25	374-406	47-51			≤180
EH	N30EH	1.08-1.15	10.8-11.5	≥812	≥10.2	≥2388	≥30	223-255	28-32			≤200
	N33EH	1.14-1.21	11.4-12.1	≥851	≥10.7	≥2388	≥30	247-279	31-35			≤200
	N38EH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥2388	≥30	263-295	33-37			≤200
	N38EH	1.23-1.29	12.3-12.9	≥915	≥11.5	≥2388	≥30	287-318	36-40			≤200
	N40EH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥2388	≥30	302-334	38-42			≤200
	N42EH	1.28-1.35	12.8-13.5	≥963	≥12.1	≥2388	≥30	318-350	39-44			≤200
	N45EH	1.33-1.38	13.3-13.8	≥995	≥12.5	≥2308	≥29	334-366	42-46			≤200
AH	N28AH	1.04-1.12	10.4-11.2	≥772	≥9.7	≥2786	≥35	207-239	26-30			≤230
	N30AH	1.08-1.15	10.8-11.5	≥812	≥10.2	≥2786	≥35	223-255	28-32			≤230
	N33AH	1.14-1.21	11.4-12.1	≥852	≥10.7	≥2786	≥35	247-279	31-35			≤230
	N35AH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥2786	≥35	263-295	33-37			≤230
	N38AH	1.23-1.27	12.3-12.7	≥923	≥11.6	≥2786	≥35	287-318	36-40			≤230
	N40AH	1.26-1.31	12.6-13.1	≥939	≥11.8	≥628	≥33	302-334	38-42			≤230
	N42AH	1.29-1.35	12.9-13.5	≥955	≥12.0	≥2628	≥33	318-350	40-44			≤230

Neo Bonded Magnets

Item	Grade	Remanence		Coercivity				Max Energy Product		Max Working Temperature	Density
		Br		HcB		HcJ		(BH)max		T^wMax	P
		T	kGs	kA/m	kOe	kA/m	kOe	KJ/m³	MGOe	°C	g/cm³
Compression Moulding NdFeB Magnet	KBM-2	0.30-0.40	3.0-4.0	160-240	2.0-3.0	420-640	6.0-8.0	16-24	2.0-3.0	≤120	4.5-6.0
	KBM-4	0.40-0.50	4.0-5.0	240-320	3.0-4.0	560-720	7.0-9.0	32-44	4.0-5.5	≤120	5.2-6.0
	KBM-6	0.50-0.60	5.0-6.0	320-400	4.0-5.0	430-640	6.0-8.0	48-60	6.0-7.5	≤120	5.5-6.0
	KBM-8	0.60-0.68	6.0-6.8	360-440	4.5-5.5	640-800	8.0-10.0	64-72	8.0-9.0	≤150	5.8-6.1
	KBM-8H	0.60-0.65	6.0-6.5	400-480	5.0-6.0	1120-1230	14.0-16.0	60-68	7.5-8.5	≤160	5.8-6.2
	KBM-8L	0.65-0.68	6.5-6.8	400-480	5.0-6.0	900-1120	11.0-14.0	64-72	8.0-9.0	≤160	5.8-6.2
	KBM-9	0.60.0.68	6.0-6.8	400-480	5.0-6.0	640-800	8.0-10.0	68-72	8.5-9.0	≤150	5.8-6.2
	KBM-10	0.68-0.73	6.8-7.3	400-480	5.0-6.0	640-800	8.0-10.0	76-84	9.5-10.5	≤150	5.8-6.2
	KBM-12	0.71-0.75	7.1-7.5	440-520	5.5-6.5	720-800	9.0-10.0	84-96	10.5-12.0	≤150	6.0-6.2
	KBM-12L	0.72-0.76	7.2-7.6	400-480	5.0-6.0	480-640	6.0-8.0	84-96	10.5-12.0	≤140	6.0-6.2
Injection Moulding NdFeB Magnet	KBI-3	0.20-0.30	2.0-3.0	160-240	2.0-3.0	480-640	6.0-8.0	12-24	1.5-3.0	≤100	3.9-4.4
	KBI-4	0.35-0.45	3.5-4.5	240-320	3.0-4.0	560-720	7.0-9.0	24-36	3.0-4.5	≤120	4.2-4.9
	KBI-5	0.45-0.52	4.5-5.2	320-360	4.0-4.5	560-720	7.0-9.0	36-44	4.5-5.5	≤120	4.5-5.0
	KBI-5H (PPS)	0.48-0.52	4.8-5.2	400-480	5.0-6.0	380-1040	11.0-13.0	36-44	4.5-5.5	≤150	4.9-5.4
	KBI-6	0.50-0.55	5.0-5.5	320-440	4.0-5.5	640-800	8.0-10.0	44-52	5.5-6.5	≤120	4.7-5.1
	KBI-7	0.54-0.64	5.4-6.4	320-400	4.0-5.5	640-800	8.0-10.0	52-60	6.5-7.5	≤120	5.0-5.5
	KBI-8	0.64-0.74	6.4-7.4	400-480	5.0-6.0	640-803	8.0-10.0	68-76	8.5-9.5	≤120	5.0-5.9
Diffusion Process
SH	G48SH	1.37-1.42	13.7-14.2	≥1011	≥13	≥1592	≥20	358-390	45-49	≤150	≥7.5
	G50SH	1.40-1.45	14.0-14.5	≥1027	≥13.2	≥1592	≥20	374-406	47-51	≤150	≥7.5
	G52SH	1.42-1.48	14.2-14.8	≥1067	≥13.4	≥1592	≥20	390-422	49-53	≤150	≥7.5
	G55SH	1.46-1.51	14.6-15.1	≥1083	≥13.6	≥1592	≥20	406-438	51-55	≤150	≥7.5
UH	G45UH	1.33-1.38	13.7-13.8	≥978	≥12.4	≥1990	≥25	334-366	42-46	≤180	≥7.5
	G48UH	1.37-1.42	13.7-14.2	≥1027	≥12.9	≥1990	≥25	358-390	45-49	≤180	≥7.5
	G50UH	1.40-1.45	14.0-14.5	≥1051	≥13.2	≥1990	≥25	374-406	47-51	≤180	≥7.5
	G52UH	1.42-1.48	14.2-14.8	≥1067	≥13.4	≥1990	≥25	390-422	49-53	≤180	≥7.5
	G54UH	1.46-1.51	14.6-15.1	≥1075	≥13.5	≥1990	≥25	406-438	51-55	≤180	≥7.5
EH	G40EH	1.26-1.31	12.6-13.1	≥955	≥12.0	≥2388	≥30	302-334	38-42	≤200	≥7.5
	G44EH	1.29-1.35	12.9-13.5	≥971	≥12.2	≥2388	≥30	318-350	40-44	≤200	≥7.5
	G46EH	1.33-1.38	13.3-13.8	≥1011	≥12.7	≥2388	≥30	334-366	42-46	≤200	≥7.5
	G48EH	1.37-1.42	13.7-14.2	≥1027	≥12.9	≥2388	≥30	358-390	45-49	≤200	≥7.5
	G50EH	1.40-1.45	14.0-14.5	≥1051	≥13.2	≥2308	≥29	374-406	47-51	≤200	≥7.5

Neodymium Magnets (NdFeB)

Experience the force of Goudsmit UK’s Neodymium magnet grades for exceptional magnetic solutions.

Exploring Goudsmit UK’s High-Performance Neodymium Magnetic Grades

Coatings Available for Neodymium Magnets

Advantages and Disadvantages of Neodymium Magnets

Download Our Neodymium Magnets (NdFeB) Brochure

Download the Neodymium Technical Data Sheets

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Neo Bonded Magnets

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