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MW 25x5 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

cylindrical magnet

Catalog no 010049

GTIN/EAN: 5906301810483

5.00

Diameter Ø

25 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

18.41 g

Magnetization Direction

↑ axial

Load capacity

7.98 kg / 78.25 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

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8.39 ZŁ with VAT / pcs + price for transport

6.82 ZŁ net + 23% VAT / pcs

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Call us +48 22 499 98 98 otherwise get in touch via inquiry form the contact section.
Lifting power along with appearance of a magnet can be calculated on our force calculator.

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Detailed specification - MW 25x5 / N38 - cylindrical magnet

Specification / characteristics - MW 25x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010049
GTIN/EAN	5906301810483
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	25 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	18.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.98 kg / 78.25 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x5 / 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	312 - 380	°C
Curie Temperature TF	593 - 716	°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 analysis of the magnet - data

These values constitute the direct effect of a physical simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Actual conditions may differ. Treat these data as a reference point for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 25x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2302 Gs 230.2 mT	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N	strong
1 mm	2189 Gs 218.9 mT	7.21 kg / 15.91 lbs 7214.9 g / 70.8 N	strong
2 mm	2050 Gs 205.0 mT	6.33 kg / 13.95 lbs 6329.3 g / 62.1 N	strong
3 mm	1895 Gs 189.5 mT	5.41 kg / 11.93 lbs 5410.7 g / 53.1 N	strong
5 mm	1570 Gs 157.0 mT	3.72 kg / 8.19 lbs 3715.4 g / 36.4 N	strong
10 mm	890 Gs 89.0 mT	1.19 kg / 2.63 lbs 1192.8 g / 11.7 N	weak grip
15 mm	495 Gs 49.5 mT	0.37 kg / 0.81 lbs 368.5 g / 3.6 N	weak grip
20 mm	288 Gs 28.8 mT	0.12 kg / 0.28 lbs 124.8 g / 1.2 N	weak grip
30 mm	116 Gs 11.6 mT	0.02 kg / 0.04 lbs 20.2 g / 0.2 N	weak grip
50 mm	31 Gs 3.1 mT	0.00 kg / 0.00 lbs 1.4 g / 0.0 N	weak grip

Grip strength decreases significantly with every mm of spacing. Keep in mind that every additional insulation layer (e.g., dirt, paint, veneer) noticeably weakens the grip. Magnets work strongest during direct contact; distance weakens the force. Analyze how rapidly the pull force plummet, when the product does not touch tightly to the steel surface. When calculating the assembly, discard unnecessary gaps.

Table 2: Slippage hold (wall)
MW 25x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.60 kg / 3.52 lbs 1596.0 g / 15.7 N
1 mm	Stal (~0.2)	1.44 kg / 3.18 lbs 1442.0 g / 14.1 N
2 mm	Stal (~0.2)	1.27 kg / 2.79 lbs 1266.0 g / 12.4 N
3 mm	Stal (~0.2)	1.08 kg / 2.39 lbs 1082.0 g / 10.6 N
5 mm	Stal (~0.2)	0.74 kg / 1.64 lbs 744.0 g / 7.3 N
10 mm	Stal (~0.2)	0.24 kg / 0.52 lbs 238.0 g / 2.3 N
15 mm	Stal (~0.2)	0.07 kg / 0.16 lbs 74.0 g / 0.7 N
20 mm	Stal (~0.2)	0.02 kg / 0.05 lbs 24.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data presents the estimated holding capacity necessary to start the slippage of the magnet down along a upright steel plate (assuming standard friction coefficient). The holding force depends on the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 25x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.39 kg / 5.28 lbs 2394.0 g / 23.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.60 kg / 3.52 lbs 1596.0 g / 15.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.80 kg / 1.76 lbs 798.0 g / 7.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.99 kg / 8.80 lbs 3990.0 g / 39.1 N

When hanging a holder on a upright wall (e.g., a car body), it you can count on only about 1/5 of nominal attraction strength. Gravitational force as well as a low friction coefficient mean that holders move down faster than they pop off the substrate. Planning a hanger? Consider that the shear force is significantly lower than the maximum static pull force. On a painted metal, the element will slide down under a much lighter cargo. Using a rubber layer can drastically improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 25x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.80 kg / 1.76 lbs 798.0 g / 7.8 N
1 mm	25%	2.00 kg / 4.40 lbs 1995.0 g / 19.6 N
2 mm	50%	3.99 kg / 8.80 lbs 3990.0 g / 39.1 N
3 mm	75%	5.99 kg / 13.19 lbs 5985.0 g / 58.7 N
5 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N
10 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N
11 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N
12 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N

A too thin steel is unable to conduct the full magnetic flux, which weakens actual performance of the magnet. If you install a neodymium to a weak sheet, the flux will pass right through and the holding will be smaller. To utilize full efficiency of this neodymium's potential, you need a suitably thick piece of metal. The saturation phenomenon causes that on thin elements (e.g., thin profiles), the holder holds weaker. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal stability (material behavior) - power drop
MW 25x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N	OK
40 °C	-2.2%	7.80 kg / 17.21 lbs 7804.4 g / 76.6 N	OK
60 °C	-4.4%	7.63 kg / 16.82 lbs 7628.9 g / 74.8 N
80 °C	-6.6%	7.45 kg / 16.43 lbs 7453.3 g / 73.1 N
100 °C	-28.8%	5.68 kg / 12.53 lbs 5681.8 g / 55.7 N

Standard neodymium magnets irreversibly lose strength past the thermal threshold. Watch out for overheating – excessive heat can irreversibly demagnetize this magnet. With every degree above norm, the neodymium's power temporarily drops. Do not use this magnet near heat sources exceeding its working range. Too high temperature will lead to permanent loss of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) may lose charge permanently sooner compared to rod magnets. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 25x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	16.03 kg / 35.34 lbs 3 871 Gs	2.40 kg / 5.30 lbs 2405 g / 23.6 N	N/A
1 mm	15.31 kg / 33.75 lbs 4 498 Gs	2.30 kg / 5.06 lbs 2296 g / 22.5 N	13.78 kg / 30.38 lbs ~0 Gs
2 mm	14.49 kg / 31.95 lbs 4 377 Gs	2.17 kg / 4.79 lbs 2174 g / 21.3 N	13.05 kg / 28.76 lbs ~0 Gs
3 mm	13.62 kg / 30.03 lbs 4 243 Gs	2.04 kg / 4.50 lbs 2043 g / 20.0 N	12.26 kg / 27.03 lbs ~0 Gs
5 mm	11.79 kg / 26.00 lbs 3 948 Gs	1.77 kg / 3.90 lbs 1769 g / 17.4 N	10.61 kg / 23.40 lbs ~0 Gs
10 mm	7.46 kg / 16.46 lbs 3 141 Gs	1.12 kg / 2.47 lbs 1120 g / 11.0 N	6.72 kg / 14.81 lbs ~0 Gs
20 mm	2.40 kg / 5.28 lbs 1 780 Gs	0.36 kg / 0.79 lbs 359 g / 3.5 N	2.16 kg / 4.75 lbs ~0 Gs
50 mm	0.10 kg / 0.21 lbs 355 Gs	0.01 kg / 0.03 lbs 14 g / 0.1 N	0.09 kg / 0.19 lbs ~0 Gs
60 mm	0.04 kg / 0.09 lbs 231 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
70 mm	0.02 kg / 0.04 lbs 158 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
80 mm	0.01 kg / 0.02 lbs 112 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.01 kg / 0.01 lbs 82 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 62 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnetic products attract each other from a wider radius than a magnet and sheet setup. Such a system of magnet-to-magnet produces a massive flux and a further horizon of performance. Designing a strong closure? Apply two magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the pinch force is extreme. The levitation is slightly lower than the connection force, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Important: Calculations refer to sliding force of a pair of same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - precautionary measures
MW 25x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.0 cm
Hearing aid	10 Gs (1.0 mT)	8.0 cm
Timepiece	20 Gs (2.0 mT)	6.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation poses a real danger to electronic devices and pacemakers. These NdFeB products generate a flux that disrupts operation of digital equipment. Notice: the unseen radiation penetrates the body and plastic. Special caution must be taken by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MW 25x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.87 km/h (6.35 m/s)	0.37 J
30 mm	36.43 km/h (10.12 m/s)	0.94 J
50 mm	46.96 km/h (13.04 m/s)	1.57 J
100 mm	66.40 km/h (18.44 m/s)	3.13 J

Magnetic elements are very brittle – a collision with steel can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Impact energy can cause material chips or painful pinches to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 25x5 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 25x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	13 107 Mx	131.1 µWb
P_c Coefficient	0.29	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter in coil applications as well as sensors. P_c value determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 25x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.98 kg	Standard
Water (riverbed)	9.14 kg (+1.16 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Warning: On a vertical surface, the magnet holds just approx. 20-30% of its nominal pull.

2. Steel saturation

*Thin steel (e.g. computer case) significantly reduces the holding force.

3. Temperature resistance

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.29

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 specification and ecology

Elemental analysis

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%

Ecology and recycling (GPSR)

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: 010049-2026

Measurement Calculator

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Kilograms (kg)

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Induction (Gs)

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MPL 5x5x2 / N38 - lamellar magnet

0.308 ZŁ brutto / pcs

The presented product is an incredibly powerful rod magnet, composed of modern NdFeB material, which, with dimensions of Ø25x5 mm, guarantees optimal power. The MW 25x5 / N38 component boasts high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 7.98 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 78.25 N with a weight of only 18.41 g, this rod is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 25.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø25x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø25x5 mm, which, at a weight of 18.41 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 7.98 kg (force ~78.25 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface 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 25 mm. Such an arrangement is standard 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 as well as cons of rare earth magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

Their strength is maintained, and after approximately ten years it drops only by ~1% (according to research),
They retain their magnetic properties even under external field action,
In other words, due to the shiny layer of nickel, the element gains a professional look,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
Thanks to flexibility in shaping and the capacity to modify to individual projects,
Wide application in modern industrial fields – they are commonly used in mass storage devices, drive modules, medical equipment, also technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:

To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Due to limitations in creating threads and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets can disrupt the diagnostic process medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

Holding force of 7.98 kg is a result of laboratory testing conducted under standard conditions:

with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
whose thickness equals approx. 10 mm
with a plane cleaned and smooth
under conditions of ideal adhesion (metal-to-metal)
during detachment in a direction vertical to the plane
at room temperature

Lifting capacity in practice – influencing factors

In real-world applications, the real power depends on many variables, listed from crucial:

Gap (betwixt the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, rust or dirt).
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content decrease magnetic permeability and holding force.
Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Thermal environment – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was determined by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Precautions when working with NdFeB magnets

Sensitization to coating

A percentage of the population experience a sensitization to nickel, which is the standard coating for neodymium magnets. Extended handling may cause a rash. We recommend wear safety gloves.

Cards and drives

Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, timepieces).

Fire warning

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

Conscious usage

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

Hand protection

Large magnets can break fingers in a fraction of a second. Never place your hand between two strong magnets.

ICD Warning

People with a heart stimulator must keep an large gap from magnets. The magnetic field can stop the functioning of the life-saving device.

Adults only

NdFeB magnets are not toys. Accidental ingestion of a few magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Magnetic interference

GPS units and smartphones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Material brittleness

NdFeB magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them shattering into small pieces.

Do not overheat magnets

Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and strength.

Safety First! Looking for details? Read our article: Are neodymium magnets dangerous?

MW 25x5 / N38 - cylindrical magnet

Detailed specification - MW 25x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - data

Table 1: Static pull force (pull vs distance) - interaction chart MW 25x5 / N38

Table 2: Slippage hold (wall) MW 25x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 25x5 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 25x5 / N38

Table 5: Thermal stability (material behavior) - power drop MW 25x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MW 25x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MW 25x5 / N38

Table 8: Dynamics (cracking risk) - warning MW 25x5 / N38

Table 9: Anti-corrosion coating durability MW 25x5 / N38

Table 10: Electrical data (Flux) MW 25x5 / N38

Table 11: Physics of underwater searching MW 25x5 / N38

1. Vertical hold

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

Other offers

MP 20x5x5 / N38 - ring magnet

MW 15x8 / N38 - cylindrical magnet

SM 25x100 [2xM8] / N52 - magnetic separator

MPL 5x5x2 / N38 - lamellar magnet

Pros as well as cons of rare earth magnets.

Benefits

Weaknesses

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

Lifting capacity in practice – influencing factors

Precautions when working with NdFeB magnets

Sensitization to coating

Cards and drives

Fire warning

Conscious usage

Hand protection

ICD Warning

Adults only

Magnetic interference

Material brittleness

Do not overheat magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - interaction chart
MW 25x5 / N38

Table 2: Slippage hold (wall)
MW 25x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 25x5 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 25x5 / N38

Table 5: Thermal stability (material behavior) - power drop
MW 25x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 25x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MW 25x5 / N38

Table 8: Dynamics (cracking risk) - warning
MW 25x5 / N38

Table 9: Anti-corrosion coating durability
MW 25x5 / N38

Table 10: Electrical data (Flux)
MW 25x5 / N38

Table 11: Physics of underwater searching
MW 25x5 / N38