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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 technical data »

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Technical - 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

Physical simulation of the magnet - report

The following data represent the outcome of a engineering analysis. Results are based on algorithms for the material Nd₂Fe₁₄B. Actual performance might slightly differ. Use these data as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
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 pounds 18510.0 g / 181.6 N	critical level
1 mm	5288 Gs 528.8 mT	15.84 kg / 34.92 pounds 15839.8 g / 155.4 N	critical level
2 mm	4861 Gs 486.1 mT	13.38 kg / 29.51 pounds 13384.0 g / 131.3 N	critical level
3 mm	4446 Gs 444.6 mT	11.20 kg / 24.69 pounds 11198.0 g / 109.9 N	critical level
5 mm	3677 Gs 367.7 mT	7.66 kg / 16.88 pounds 7657.5 g / 75.1 N	strong
10 mm	2216 Gs 221.6 mT	2.78 kg / 6.13 pounds 2782.1 g / 27.3 N	strong
15 mm	1354 Gs 135.4 mT	1.04 kg / 2.29 pounds 1037.8 g / 10.2 N	safe
20 mm	864 Gs 86.4 mT	0.42 kg / 0.93 pounds 423.3 g / 4.2 N	safe
30 mm	405 Gs 40.5 mT	0.09 kg / 0.21 pounds 93.1 g / 0.9 N	safe
50 mm	133 Gs 13.3 mT	0.01 kg / 0.02 pounds 10.0 g / 0.1 N	safe

Magnetic force weakens significantly per each millimeter of distance. Keep in mind that even a very thin break (e.g., dirt, paint, veneer) significantly reduces the pull force. Neodymiums hold optimally at the point of direct contact; air break nullifies the force. Observe how flashily the pull force fall, when the product does not adhere flatly to the metal substrate. When calculating the mounting, eliminate unnecessary gaps.

Table 2: Slippage hold (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 pounds 3702.0 g / 36.3 N
1 mm	Stal (~0.2)	3.17 kg / 6.98 pounds 3168.0 g / 31.1 N
2 mm	Stal (~0.2)	2.68 kg / 5.90 pounds 2676.0 g / 26.3 N
3 mm	Stal (~0.2)	2.24 kg / 4.94 pounds 2240.0 g / 22.0 N
5 mm	Stal (~0.2)	1.53 kg / 3.38 pounds 1532.0 g / 15.0 N
10 mm	Stal (~0.2)	0.56 kg / 1.23 pounds 556.0 g / 5.5 N
15 mm	Stal (~0.2)	0.21 kg / 0.46 pounds 208.0 g / 2.0 N
20 mm	Stal (~0.2)	0.08 kg / 0.19 pounds 84.0 g / 0.8 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 18.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N

The following data presents the approximate shear load needed to cause the shifting of the magnet down on a vertical steel wall (assuming typical friction coefficient). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
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 pounds 5553.0 g / 54.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.70 kg / 8.16 pounds 3702.0 g / 36.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.85 kg / 4.08 pounds 1851.0 g / 18.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.26 kg / 20.40 pounds 9255.0 g / 90.8 N

When mounting a magnet on a upright plane (e.g., a fridge), it you can count on only approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that magnets slide down easier than they pop off the substrate. Planning a vertical fastening? Consider that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the element will slip down under a noticeably lighter load. Application of an anti-slip pad can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MP 25x5x27 / N38

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

A thin metal plate is not enough to take in the full magnetic flux, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To achieve 100% of this magnet's power, you require a sufficiently solid element of metal. The saturation phenomenon causes that on delicate walls (e.g., thin profiles), the product works worse. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (stability) - 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 pounds 18510.0 g / 181.6 N	OK
40 °C	-2.2%	18.10 kg / 39.91 pounds 18102.8 g / 177.6 N	OK
60 °C	-4.4%	17.70 kg / 39.01 pounds 17695.6 g / 173.6 N	OK
80 °C	-6.6%	17.29 kg / 38.11 pounds 17288.3 g / 169.6 N
100 °C	-28.8%	13.18 kg / 29.05 pounds 13179.1 g / 129.3 N

Classic neodymiums change their properties power after exceeding the maximum temperature. Protect against heat – excessive heat can irreversibly destroy this magnet. With every degree above norm, the neodymium's force briefly decreases. Avoid using this product near heat sources exceeding its operating temperature limit. Ignoring the limit will cause permanent loss of magnetism.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) may lose charge permanently under lower heat stress than long magnets. The danger warning in the table points to permanent field degradation for this particular item.

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

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

Two magnets attract each other from a significantly greater distance than a magnet and sheet combination. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Designing a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the impact force is huge. The repulsion force is slightly lower than the attraction, but still impressive.
*The magnetic induction for N-N configuration reaches ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Important: Calculations show friction force of a pair of same magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - 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
Mobile device	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 poses a real danger to electronics and medical implants. These neodymiums produce a field that disrupts operation of sensitive medical devices. Be aware: the unseen radiation passes through tissues and plastic. Increased vigilance must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - 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 prone to chipping – a violent impact against metal risks their cracking. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can cause material chips or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear eye protection when working with large magnets.

Table 9: Surface protection spec
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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
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. Key data in coil applications as well as sensors. P_c value defines the working geometry.

Table 11: Submerged application
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%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Caution: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.

2. Plate thickness effect

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

3. Heat tolerance

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

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

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

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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

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%

Sustainability

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 magnet with a hole MP 25x5x27 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 25x5x27 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain great sensitivity. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Always check that the screw head is not larger than the outer diameter of the magnet (25 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø25 mm (outer diameter) and height 27 mm. The key parameter here is the holding force amounting to approximately 18.51 kg (force ~181.54 N). 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 and disadvantages of neodymium magnets.

Pros

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:

Their strength is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
They retain their magnetic properties even under close interference source,
In other words, due to the shiny surface of gold, the element gains visual value,
Magnetic induction on the surface of the magnet is exceptional,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of precise shaping as well as modifying to complex needs,
Universal use in innovative solutions – they are commonly used in data components, electric motors, precision medical tools, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in small systems

Cons

Problematic aspects of neodymium magnets: tips and applications.

Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
Neodymium magnets lose power 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 extremely resistant to heat
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
We recommend a housing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these products are able to be problematic in diagnostics medical after entering the body.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Highest magnetic holding force – what it depends on?

The declared magnet strength represents the limit force, obtained under laboratory conditions, meaning:

using a plate made of low-carbon steel, serving as a circuit closing element
with a thickness no less than 10 mm
with a plane perfectly flat
with total lack of distance (without paint)
under axial application of breakaway force (90-degree angle)
in stable room temperature

What influences lifting capacity in practice

Holding efficiency is affected by working environment parameters, mainly (from priority):

Clearance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Plate thickness – too thin plate does not close the flux, causing part of the flux to be escaped to the other side.
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets

Caution required

Handle magnets with awareness. Their huge power can surprise even experienced users. Stay alert and do not underestimate their force.

Product not for children

NdFeB magnets are not toys. Swallowing several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and requires urgent medical intervention.

Impact on smartphones

A powerful magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a smartphone to avoid breaking the sensors.

Fire warning

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Implant safety

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Electronic devices

Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, medical aids, mechanical watches).

Bodily injuries

Mind your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!

Magnet fragility

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

Sensitization to coating

Studies show that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, prevent direct skin contact and opt for coated magnets.

Heat sensitivity

Keep cool. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, ask us about HT versions (H, SH, UH).

Security! Learn more about risks in the article: Magnet Safety Guide.

MP 25x5x27 / N38 - ring magnet

Technical - MP 25x5x27 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - report

Table 1: Static pull force (pull vs gap) - interaction chart MP 25x5x27 / N38

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

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MP 25x5x27 / N38

Table 4: Material efficiency (saturation) - power losses MP 25x5x27 / N38

Table 5: Working in heat (stability) - power drop MP 25x5x27 / N38

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

Table 7: Hazards (electronics) - precautionary measures MP 25x5x27 / N38

Table 8: Dynamics (kinetic energy) - warning MP 25x5x27 / N38

Table 9: Surface protection spec MP 25x5x27 / N38

Table 10: Construction data (Flux) MP 25x5x27 / N38

Table 11: Submerged application MP 25x5x27 / N38

1. Sliding resistance

2. Plate thickness effect

3. Heat tolerance

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

Elemental analysis

Sustainability

Force (pull)

Magnetic Induction

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Advantages and disadvantages of neodymium magnets.

Pros

Cons

Holding force characteristics

Highest magnetic holding force – what it depends on?

What influences lifting capacity in practice

H&S for magnets

Caution required

Product not for children

Impact on smartphones

Fire warning

Implant safety

Electronic devices

Bodily injuries

Magnet fragility

Sensitization to coating

Heat sensitivity

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MP 25x5x27 / N38

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

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 25x5x27 / N38

Table 4: Material efficiency (saturation) - power losses
MP 25x5x27 / N38

Table 5: Working in heat (stability) - power drop
MP 25x5x27 / N38

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

Table 7: Hazards (electronics) - precautionary measures
MP 25x5x27 / N38

Table 8: Dynamics (kinetic energy) - warning
MP 25x5x27 / N38

Table 9: Surface protection spec
MP 25x5x27 / N38

Table 10: Construction data (Flux)
MP 25x5x27 / N38

Table 11: Submerged application
MP 25x5x27 / N38