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MP 25x5x27 / N38 - ring 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

ring magnet

Catalog no 030192

GTIN/EAN: 5906301812098

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

27 mm [±0,1 mm]

Weight

95.43 g

Magnetization Direction

↑ axial

Load capacity

18.51 kg / 181.54 N

Magnetic Induction

562.34 mT / 5623 Gs

Coating

[NiCuNi] Nickel

see parameters »

47.18 ZŁ with VAT / pcs + price for transport

38.36 ZŁ net + 23% VAT / pcs

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Physical properties - MP 25x5x27 / N38 - ring magnet

Specification / characteristics - MP 25x5x27 / N38 - ring magnet

properties

properties	values
Cat. no.	030192
GTIN/EAN	5906301812098
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	25 mm [±0,1 mm]
internal diameter Ø	5 mm [±0,1 mm]
Height	27 mm [±0,1 mm]
Weight	95.43 g
Magnetization Direction	↑ axial
Load capacity ~ ?	18.51 kg / 181.54 N
Magnetic Induction ~ ?	562.34 mT / 5623 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x5x27 / N38 - ring 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

Engineering analysis of the product - technical parameters

The following data represent the result of a mathematical calculation. Values are based on algorithms for the material Nd₂Fe₁₄B. Actual conditions may deviate from the simulation results. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MP 25x5x27 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5716 Gs 571.6 mT	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N	dangerous!
1 mm	5288 Gs 528.8 mT	15.84 kg / 34.92 LBS 15839.8 g / 155.4 N	dangerous!
2 mm	4861 Gs 486.1 mT	13.38 kg / 29.51 LBS 13384.0 g / 131.3 N	dangerous!
3 mm	4446 Gs 444.6 mT	11.20 kg / 24.69 LBS 11198.0 g / 109.9 N	dangerous!
5 mm	3677 Gs 367.7 mT	7.66 kg / 16.88 LBS 7657.5 g / 75.1 N	medium risk
10 mm	2216 Gs 221.6 mT	2.78 kg / 6.13 LBS 2782.1 g / 27.3 N	medium risk
15 mm	1354 Gs 135.4 mT	1.04 kg / 2.29 LBS 1037.8 g / 10.2 N	low risk
20 mm	864 Gs 86.4 mT	0.42 kg / 0.93 LBS 423.3 g / 4.2 N	low risk
30 mm	405 Gs 40.5 mT	0.09 kg / 0.21 LBS 93.1 g / 0.9 N	low risk
50 mm	133 Gs 13.3 mT	0.01 kg / 0.02 LBS 10.0 g / 0.1 N	low risk

Grip strength decreases sharply with every subsequent millimeter of spacing. Note that even the smallest gap (e.g., dirt, paint, rust) noticeably reduces the pull force. Magnets work strongest during direct contact; distance weakens the force. Analyze how quickly the parameters plummet, when the magnet does not touch directly to the metal substrate. When calculating the assembly, avoid additional spacers.

Table 2: Slippage capacity (vertical surface)
MP 25x5x27 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.70 kg / 8.16 LBS 3702.0 g / 36.3 N
1 mm	Stal (~0.2)	3.17 kg / 6.98 LBS 3168.0 g / 31.1 N
2 mm	Stal (~0.2)	2.68 kg / 5.90 LBS 2676.0 g / 26.3 N
3 mm	Stal (~0.2)	2.24 kg / 4.94 LBS 2240.0 g / 22.0 N
5 mm	Stal (~0.2)	1.53 kg / 3.38 LBS 1532.0 g / 15.0 N
10 mm	Stal (~0.2)	0.56 kg / 1.23 LBS 556.0 g / 5.5 N
15 mm	Stal (~0.2)	0.21 kg / 0.46 LBS 208.0 g / 2.0 N
20 mm	Stal (~0.2)	0.08 kg / 0.19 LBS 84.0 g / 0.8 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The table below shows the approximate weight limit necessary to cause the downward movement of the magnet vertically against a upright metal surface (considering typical friction). This value varies with the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MP 25x5x27 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.55 kg / 12.24 LBS 5553.0 g / 54.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.70 kg / 8.16 LBS 3702.0 g / 36.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.85 kg / 4.08 LBS 1851.0 g / 18.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.26 kg / 20.40 LBS 9255.0 g / 90.8 N

When hanging a magnet on a vertical plane (e.g., a car body), it you can count on only about 20%-30% of its nominal power. Gravity as well as a weak degree of grip influence the fact that products move down faster than they pop off the substrate. Want to create a wall mount? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a noticeably lighter weight. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 25x5x27 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.93 kg / 2.04 LBS 925.5 g / 9.1 N
1 mm	13%	2.31 kg / 5.10 LBS 2313.8 g / 22.7 N
2 mm	25%	4.63 kg / 10.20 LBS 4627.5 g / 45.4 N
3 mm	38%	6.94 kg / 15.30 LBS 6941.3 g / 68.1 N
5 mm	63%	11.57 kg / 25.50 LBS 11568.8 g / 113.5 N
10 mm	100%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N
11 mm	100%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N
12 mm	100%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N

A thin sheet cannot focus the entire magnetic field, which squanders power of the holder. If you install a neodymium to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To squeeze 100% of this neodymium's power, you need a suitably thick element of metal. The saturation phenomenon causes that on delicate walls (e.g., car bodies), the product works worse. We advise picking the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - power drop
MP 25x5x27 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N	OK
40 °C	-2.2%	18.10 kg / 39.91 LBS 18102.8 g / 177.6 N	OK
60 °C	-4.4%	17.70 kg / 39.01 LBS 17695.6 g / 173.6 N	OK
80 °C	-6.6%	17.29 kg / 38.11 LBS 17288.3 g / 169.6 N
100 °C	-28.8%	13.18 kg / 29.05 LBS 13179.1 g / 129.3 N

Classic neodymiums change their properties strength past the thermal threshold. Avoid high temperatures – heat can irreversibly damage this product. With increasing heat, the magnet's force briefly drops. Avoid using this magnet close to heaters higher than its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) may lose charge permanently at lower temperatures compared to rod magnets. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field range
MP 25x5x27 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	13.99 kg / 30.83 LBS 6 064 Gs	2.10 kg / 4.62 LBS 2098 g / 20.6 N	N/A
1 mm	12.97 kg / 28.59 LBS 11 008 Gs	1.94 kg / 4.29 LBS 1945 g / 19.1 N	11.67 kg / 25.73 LBS ~0 Gs
2 mm	11.97 kg / 26.39 LBS 10 576 Gs	1.80 kg / 3.96 LBS 1795 g / 17.6 N	10.77 kg / 23.75 LBS ~0 Gs
3 mm	11.02 kg / 24.29 LBS 10 146 Gs	1.65 kg / 3.64 LBS 1652 g / 16.2 N	9.91 kg / 21.86 LBS ~0 Gs
5 mm	9.26 kg / 20.42 LBS 9 303 Gs	1.39 kg / 3.06 LBS 1389 g / 13.6 N	8.33 kg / 18.37 LBS ~0 Gs
10 mm	5.79 kg / 12.76 LBS 7 353 Gs	0.87 kg / 1.91 LBS 868 g / 8.5 N	5.21 kg / 11.48 LBS ~0 Gs
20 mm	2.10 kg / 4.63 LBS 4 432 Gs	0.32 kg / 0.70 LBS 315 g / 3.1 N	1.89 kg / 4.17 LBS ~0 Gs
50 mm	0.14 kg / 0.32 LBS 1 159 Gs	0.02 kg / 0.05 LBS 22 g / 0.2 N	0.13 kg / 0.29 LBS ~0 Gs
60 mm	0.07 kg / 0.16 LBS 811 Gs	0.01 kg / 0.02 LBS 11 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
70 mm	0.04 kg / 0.08 LBS 589 Gs	0.01 kg / 0.01 LBS 6 g / 0.1 N	0.03 kg / 0.07 LBS ~0 Gs
80 mm	0.02 kg / 0.05 LBS 440 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
90 mm	0.01 kg / 0.03 LBS 338 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
100 mm	0.01 kg / 0.02 LBS 265 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets interact from a significantly greater distance than a magnet and sheet setup. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Planning to create a solid fastener? Use a pair of magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the pinch force is extreme. The levitation is a bit weaker than the attraction, but still significant.
*Field value for N-N configuration drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Estimates apply to sliding force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MP 25x5x27 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	18.0 cm
Hearing aid	10 Gs (1.0 mT)	14.0 cm
Mechanical watch	20 Gs (2.0 mT)	11.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	8.5 cm
Car key	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Extremely neodym field is a serious hazard to electronic devices and pacemakers. These magnets produce a flux that prevents correct functioning of digital equipment. Be aware: the unseen radiation passes through tissues and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, speakers, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MP 25x5x27 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	15.31 km/h (4.25 m/s)	0.86 J
30 mm	24.40 km/h (6.78 m/s)	2.19 J
50 mm	31.42 km/h (8.73 m/s)	3.63 J
100 mm	44.42 km/h (12.34 m/s)	7.26 J

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can destroy the magnet or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 25x5x27 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MP 25x5x27 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 917 Mx	49.2 µWb
P_c Coefficient	1.40	High (Stable)

Total magnetic flux passing through the pole surface. Essential parameter in coil applications and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 25x5x27 / N38

Environment	Effective steel pull	Effect
Air (land)	18.51 kg	Standard
Water (riverbed)	21.19 kg (+2.68 kg buoyancy gain)	+14.5%

Warning: 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. Buoyancy helps in lifting finds.

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains merely ~20% of its max power.

2. Steel saturation

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

3. Power loss vs temp

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.40

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.

Engineering data and GPSR

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: 030192-2026

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The ring-shaped magnet MP 25x5x27 / N38 is created for permanent mounting, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. This product with a force of 18.51 kg works great as a cabinet closure, speaker holder, or mounting element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for inside building use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 5 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

It is a magnetic ring with a diameter of 25 mm and thickness 27 mm. The pulling force of this model is an impressive 18.51 kg, which translates to 181.54 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 5 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages as well as disadvantages of rare earth magnets.

Advantages

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

They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
They show high resistance to demagnetization induced by external disturbances,
Thanks to the elegant finish, the surface of nickel, gold, or silver gives an visually attractive appearance,
The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of detailed modeling and adjusting to complex conditions,
Significant place in high-tech industry – they are used in magnetic memories, electric drive systems, precision medical tools, also complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Limited ability of creating threads in the magnet and complex shapes - preferred is cover - magnet mounting.
Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. Additionally, small elements of these products are able to disrupt the diagnostic process medical after entering 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 contributes to it?

Holding force of 18.51 kg is a result of laboratory testing executed under the following configuration:

with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
possessing a massiveness of min. 10 mm to ensure full flux closure
characterized by lack of roughness
with total lack of distance (no paint)
under axial force vector (90-degree angle)
at room temperature

Practical lifting capacity: influencing factors

Bear in mind that the working load will differ influenced by the following factors, starting with the most relevant:

Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Temperature – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Warnings

Protect data

Do not bring magnets close to a wallet, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Hand protection

Big blocks can crush fingers in a fraction of a second. Under no circumstances place your hand between two attracting surfaces.

Skin irritation risks

A percentage of the population have a contact allergy to nickel, which is the standard coating for neodymium magnets. Prolonged contact may cause dermatitis. We suggest use safety gloves.

Keep away from electronics

Note: neodymium magnets generate a field that disrupts precision electronics. Keep a safe distance from your phone, tablet, and navigation systems.

Demagnetization risk

Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Pacemakers

For implant holders: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Caution required

Handle with care. Rare earth magnets act from a long distance and snap with massive power, often quicker than you can react.

Magnets are brittle

Neodymium magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them breaking into small pieces.

This is not a toy

NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them pinching intestinal walls, which poses a severe health hazard and necessitates urgent medical intervention.

Dust explosion hazard

Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Caution! Want to know more? Read our article: Why are neodymium magnets dangerous?

MP 25x5x27 / N38 - ring magnet

Physical properties - MP 25x5x27 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - technical parameters

Table 1: Static force (pull vs distance) - power drop MP 25x5x27 / N38

Table 2: Slippage capacity (vertical surface) MP 25x5x27 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 25x5x27 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MP 25x5x27 / N38

Table 5: Thermal stability (material behavior) - power drop MP 25x5x27 / N38

Table 6: Two magnets (repulsion) - field range MP 25x5x27 / N38

Table 7: Protective zones (implants) - precautionary measures MP 25x5x27 / N38

Table 8: Dynamics (cracking risk) - warning MP 25x5x27 / N38

Table 9: Anti-corrosion coating durability MP 25x5x27 / N38

Table 10: Electrical data (Pc) MP 25x5x27 / N38

Table 11: Underwater work (magnet fishing) MP 25x5x27 / N38

1. Sliding resistance

2. Steel saturation

3. Power loss vs temp

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

Material specification

Environmental data

Magnet pull force

Magnetic Induction

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Advantages as well as disadvantages of rare earth magnets.

Advantages

Limitations

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

Practical lifting capacity: influencing factors

Warnings

Protect data

Hand protection

Skin irritation risks

Keep away from electronics

Demagnetization risk

Pacemakers

Caution required

Magnets are brittle

This is not a toy

Dust explosion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MP 25x5x27 / N38

Table 2: Slippage capacity (vertical surface)
MP 25x5x27 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 25x5x27 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MP 25x5x27 / N38

Table 5: Thermal stability (material behavior) - power drop
MP 25x5x27 / N38

Table 6: Two magnets (repulsion) - field range
MP 25x5x27 / N38

Table 7: Protective zones (implants) - precautionary measures
MP 25x5x27 / N38

Table 8: Dynamics (cracking risk) - warning
MP 25x5x27 / N38

Table 9: Anti-corrosion coating durability
MP 25x5x27 / N38

Table 10: Electrical data (P_c)
MP 25x5x27 / N38

Table 11: Underwater work (magnet fishing)
MP 25x5x27 / N38