Product available Ships tomorrow

MW 5x3 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN

cylindrical magnet

Catalog no 010087

GTIN/EAN: 5906301810865

5.00

Load capacity 0.84 kg / 8.25 N Magnetic Induction 475.16 mT / 4752 Gs

Diameter Ø: 5 mm [±0,1 mm]
Height: 3 mm [±0,1 mm]
Weight: 0.44 g
Magnetization Direction: ↑ axial
Coating: [NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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0.230 zł net / pcs

0.283 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?

Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.

What is the difference between N38, N42 and N52?

The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.

What is the dimensional tolerance?

±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Physical properties - MW 5x3 / N38 - cylindrical magnet

Specification / characteristics - MW 5x3 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010087
GTIN/EAN	5906301810865
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	0.44 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.84 kg / 8.25 N
Magnetic Induction ~ ?	475.16 mT / 4752 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x3 / N38 - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	310	°C
Curie Temperature TF	590	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Technical simulation of the assembly - data

The following values constitute the direct effect of a physical calculation. Values rely on models for the material Nd₂Fe₁₄B. Operational parameters might slightly deviate from the simulation results. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - characteristics
MW 5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4745 Gs 474.5 mT	0.84 kg / 1.85 LBS 840.0 g / 8.2 N	safe
1 mm	2955 Gs 295.5 mT	0.33 kg / 0.72 LBS 325.8 g / 3.2 N	safe
2 mm	1672 Gs 167.2 mT	0.10 kg / 0.23 LBS 104.4 g / 1.0 N	safe
3 mm	960 Gs 96.0 mT	0.03 kg / 0.08 LBS 34.4 g / 0.3 N	safe
5 mm	372 Gs 37.2 mT	0.01 kg / 0.01 LBS 5.2 g / 0.1 N	safe
10 mm	74 Gs 7.4 mT	0.00 kg / 0.00 LBS 0.2 g / 0.0 N	safe
15 mm	25 Gs 2.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
20 mm	12 Gs 1.2 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
30 mm	4 Gs 0.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Magnetic force weakens sharply with every subsequent millimeter of spacing. Keep in mind that even a microscopic distance (e.g., contamination, paint, dust) strongly weakens the grip. Magnets work strongest at the point of direct contact; gap nullifies the power. Observe how rapidly the parameters drop, when the magnet does not adhere tightly to the steel surface. When designing the arrangement, eliminate unnecessary gaps.

Table 2: Sliding capacity (wall)
MW 5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.17 kg / 0.37 LBS 168.0 g / 1.6 N
1 mm	Stal (~0.2)	0.07 kg / 0.15 LBS 66.0 g / 0.6 N
2 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 20.0 g / 0.2 N
3 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data calculates the approximate holding capacity required to start the downward movement of the magnet downwards against a vertical steel wall (assuming typical friction coefficient). This value is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.25 kg / 0.56 LBS 252.0 g / 2.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.17 kg / 0.37 LBS 168.0 g / 1.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.08 kg / 0.19 LBS 84.0 g / 0.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.42 kg / 0.93 LBS 420.0 g / 4.1 N

When placing a magnet on a vertical surface (e.g., a board), it will only hold barely approx. 20%-30% of its nominal power. Gravity as well as a low friction coefficient mean that products move down easier than they pull off. Want to create a hanger? Note that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the element will give way down under a much lighter cargo. Utilizing a rubberized coating can drastically improve the result.

Table 4: Material efficiency (saturation) - power losses
MW 5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.08 kg / 0.19 LBS 84.0 g / 0.8 N
1 mm	25%	0.21 kg / 0.46 LBS 210.0 g / 2.1 N
2 mm	50%	0.42 kg / 0.93 LBS 420.0 g / 4.1 N
3 mm	75%	0.63 kg / 1.39 LBS 630.0 g / 6.2 N
5 mm	100%	0.84 kg / 1.85 LBS 840.0 g / 8.2 N
10 mm	100%	0.84 kg / 1.85 LBS 840.0 g / 8.2 N
11 mm	100%	0.84 kg / 1.85 LBS 840.0 g / 8.2 N
12 mm	100%	0.84 kg / 1.85 LBS 840.0 g / 8.2 N

A too thin steel is not enough to conduct the entire magnetic field, which wastes potential of the magnet. Should you attach a powerful product to a weak sheet, the field will penetrate right through and the holding will be smaller. To utilize the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the holder holds weaker. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - power drop
MW 5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.84 kg / 1.85 LBS 840.0 g / 8.2 N	OK
40 °C	-2.2%	0.82 kg / 1.81 LBS 821.5 g / 8.1 N	OK
60 °C	-4.4%	0.80 kg / 1.77 LBS 803.0 g / 7.9 N	OK
80 °C	-6.6%	0.78 kg / 1.73 LBS 784.6 g / 7.7 N
100 °C	-28.8%	0.60 kg / 1.32 LBS 598.1 g / 5.9 N

Standard neodymium magnets change their properties parameters after exceeding the maximum temperature. Protect against heat – high temperature can permanently demagnetize this magnet. With increasing heat, the neodymium's force temporarily drops. Do not use this magnet close to heaters higher than its working range. Ignoring the limit will lead to irreversible degradation of magnetism.

*Technical advisory: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.73 kg / 6.01 LBS 5 700 Gs	0.41 kg / 0.90 LBS 409 g / 4.0 N	N/A
1 mm	1.77 kg / 3.91 LBS 7 658 Gs	0.27 kg / 0.59 LBS 266 g / 2.6 N	1.60 kg / 3.52 LBS ~0 Gs
2 mm	1.06 kg / 2.33 LBS 5 910 Gs	0.16 kg / 0.35 LBS 159 g / 1.6 N	0.95 kg / 2.10 LBS ~0 Gs
3 mm	0.60 kg / 1.33 LBS 4 460 Gs	0.09 kg / 0.20 LBS 90 g / 0.9 N	0.54 kg / 1.19 LBS ~0 Gs
5 mm	0.19 kg / 0.42 LBS 2 520 Gs	0.03 kg / 0.06 LBS 29 g / 0.3 N	0.17 kg / 0.38 LBS ~0 Gs
10 mm	0.02 kg / 0.04 LBS 745 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.03 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 147 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 12 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 7 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 5 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 3 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 2 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 2 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel setup. Such a system of two magnets creates a more powerful interaction and a further horizon of action. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the collision energy is massive. The levitation is marginally weaker than the connection force, but still significant.
*Field value for N-N configuration drops to ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Important: Estimates show sliding force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Timepiece	20 Gs (2.0 mT)	2.0 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Car key	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Extremely neodym field is a real danger to electronic devices as well as pacemakers. These NdFeB products produce a field that destroys function of sensitive medical devices. Remember: the unseen radiation acts through matter and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MW 5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.23 km/h (6.17 m/s)	0.01 J
30 mm	22.24 km/h (6.18 m/s)	0.01 J
50 mm	22.24 km/h (6.18 m/s)	0.01 J
100 mm	22.24 km/h (6.18 m/s)	0.01 J

NdFeB products are delicate – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Striking energy can destroy the magnet or injury to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Use safety goggles when playing with powerful specimens.

Table 9: Surface protection spec
MW 5x3 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MW 5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	942 Mx	9.4 µWb
P_c Coefficient	0.66	High (Stable)

Flux value emitted by the magnet pole. Key data in coil applications as well as sensors. P_c value defines the working geometry.

Table 11: Submerged application
MW 5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	0.84 kg	Standard
Water (riverbed)	0.96 kg (+0.12 kg buoyancy gain)	+14.5%

Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Note: On a vertical surface, the magnet holds merely a fraction of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly limits the holding force.

3. Thermal stability

*For N38 material, the safety limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.66

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Material specification

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010087-2026

Measurement Calculator

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Kilograms (kg)

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The presented product is an incredibly powerful cylinder magnet, produced from advanced NdFeB material, which, with dimensions of Ø5x3 mm, guarantees the highest energy density. The MW 5x3 / N38 model features high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.84 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 8.25 N with a weight of only 0.44 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets N38 are strong enough for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 3 mm. The value of 8.25 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.44 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 5 mm. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros and cons of Nd₂Fe₁₄B magnets.

Strengths

Besides their tremendous strength, neodymium magnets offer the following advantages:

They do not lose strength, even during around ten years – the reduction in lifting capacity is only ~1% (according to tests),
Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnetic induction on the working layer of the magnet turns out to be impressive,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Thanks to modularity in forming and the capacity to modify to complex applications,
Universal use in innovative solutions – they are utilized in mass storage devices, brushless drives, medical devices, also modern systems.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in miniature devices

Limitations

Characteristics of disadvantages of neodymium magnets and proposals for their use:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also increases their durability
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in creating threads and complex shapes in magnets, we propose using casing - magnetic mount.
Possible danger to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Magnetic strength at its maximum – what it depends on?

The declared magnet strength represents the maximum value, obtained under optimal environment, meaning:

on a block made of mild steel, effectively closing the magnetic flux
with a cross-section of at least 10 mm
characterized by smoothness
without any clearance between the magnet and steel
for force acting at a right angle (pull-off, not shear)
at temperature room level

Impact of factors on magnetic holding capacity in practice

Real force is influenced by working environment parameters, including (from most important):

Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Material composition – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
Surface quality – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safe handling of NdFeB magnets

Swallowing risk

Strictly store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are life-threatening.

Respect the power

Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

GPS Danger

Navigation devices and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Beware of splinters

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Do not overheat magnets

Control the heat. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.

Pacemakers

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Serious injuries

Mind your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Avoid contact if allergic

Studies show that the nickel plating (standard magnet coating) is a potent allergen. For allergy sufferers, prevent direct skin contact or select coated magnets.

Electronic devices

Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Combustion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Caution! More info about risks in the article: Safety of working with magnets.

MW 5x3 / N38 - cylindrical magnet

Physical properties - MW 5x3 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - data

Table 1: Static force (force vs distance) - characteristics MW 5x3 / N38

Table 2: Sliding capacity (wall) MW 5x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 5x3 / N38

Table 4: Material efficiency (saturation) - power losses MW 5x3 / N38

Table 5: Thermal resistance (stability) - power drop MW 5x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MW 5x3 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 5x3 / N38

Table 8: Impact energy (cracking risk) - collision effects MW 5x3 / N38

Table 9: Surface protection spec MW 5x3 / N38

Table 10: Electrical data (Flux) MW 5x3 / N38

Table 11: Submerged application MW 5x3 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Thermal stability

4. Demagnetization curve and operating point (B-H)

Material specification

Environmental data

Pulling force

Magnetic Induction

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MW 12x10 / N38 - cylindrical magnet

MPL 40x20x5 / N38 - lamellar magnet

Pros and cons of Nd2Fe14B magnets.

Strengths

Limitations

Pull force analysis

Magnetic strength at its maximum – what it depends on?

Impact of factors on magnetic holding capacity in practice

Safe handling of NdFeB magnets

Swallowing risk

Respect the power

GPS Danger

Beware of splinters

Do not overheat magnets

Pacemakers

Serious injuries

Avoid contact if allergic

Electronic devices

Combustion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
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Table 2: Sliding capacity (wall)
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Table 3: Vertical assembly (shearing) - vertical pull
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Table 4: Material efficiency (saturation) - power losses
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Table 5: Thermal resistance (stability) - power drop
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Table 6: Magnet-Magnet interaction (attraction) - forces in the system
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Table 7: Safety (HSE) (implants) - precautionary measures
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Table 8: Impact energy (cracking risk) - collision effects
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Table 9: Surface protection spec
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Table 10: Electrical data (Flux)
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Table 11: Submerged application
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Pros and cons of Nd₂Fe₁₄B magnets.